diff --git a/apps/web/src/components/dev/DevMenu.tsx b/apps/web/src/components/dev/DevMenu.tsx
new file mode 100644
index 0000000..b6ea9cf
--- /dev/null
+++ b/apps/web/src/components/dev/DevMenu.tsx
@@ -0,0 +1,72 @@
+import { useState, useEffect } from 'react';
+import { X, Bug } from 'lucide-react';
+import { ResourcesTab } from './ResourcesTab';
+import { TimeCompletionTab } from './TimeCompletionTab';
+import { StateInspectionTab } from './StateInspectionTab';
+import { EventTriggersTab } from './EventTriggersTab';
+
+type Tab = 'resources' | 'time' | 'inspect' | 'events';
+
+const TABS: { id: Tab; label: string }[] = [
+  { id: 'resources', label: 'Resources' },
+  { id: 'time', label: 'Time' },
+  { id: 'inspect', label: 'Inspect' },
+  { id: 'events', label: 'Events' },
+];
+
+export function DevMenu() {
+  const [isOpen, setIsOpen] = useState(false);
+  const [activeTab, setActiveTab] = useState<Tab>('resources');
+
+  const isEnabled = import.meta.env.DEV || localStorage.getItem('ai-tycoon-dev-menu') === 'true';
+
+  useEffect(() => {
+    if (!isEnabled) return;
+    const handler = () => setIsOpen((o) => !o);
+    window.addEventListener('toggle-dev-menu', handler);
+    return () => window.removeEventListener('toggle-dev-menu', handler);
+  }, [isEnabled]);
+
+  if (!isEnabled || !isOpen) return null;
+
+  return (
+    <div className="fixed bottom-4 right-4 z-50 w-[440px] max-h-[520px] flex flex-col bg-surface-900 border border-surface-700 rounded-lg shadow-2xl">
+      <div className="flex items-center justify-between px-3 py-2 border-b border-surface-700">
+        <div className="flex items-center gap-2">
+          <Bug className="w-4 h-4 text-amber-400" />
+          <span className="text-sm font-semibold text-surface-100">Dev Menu</span>
+          <span className="text-[10px] text-surface-500">Ctrl+D</span>
+        </div>
+        <button
+          onClick={() => setIsOpen(false)}
+          className="p-0.5 rounded hover:bg-surface-700 text-surface-400 hover:text-surface-200"
+        >
+          <X className="w-4 h-4" />
+        </button>
+      </div>
+
+      <div className="flex border-b border-surface-700">
+        {TABS.map(({ id, label }) => (
+          <button
+            key={id}
+            onClick={() => setActiveTab(id)}
+            className={`flex-1 px-3 py-1.5 text-xs font-medium transition-colors ${
+              activeTab === id
+                ? 'text-amber-400 border-b-2 border-amber-400 bg-surface-800/50'
+                : 'text-surface-400 hover:text-surface-200 hover:bg-surface-800/30'
+            }`}
+          >
+            {label}
+          </button>
+        ))}
+      </div>
+
+      <div className="flex-1 overflow-y-auto p-3">
+        {activeTab === 'resources' && <ResourcesTab />}
+        {activeTab === 'time' && <TimeCompletionTab />}
+        {activeTab === 'inspect' && <StateInspectionTab />}
+        {activeTab === 'events' && <EventTriggersTab />}
+      </div>
+    </div>
+  );
+}
diff --git a/apps/web/src/components/dev/EventTriggersTab.tsx b/apps/web/src/components/dev/EventTriggersTab.tsx
new file mode 100644
index 0000000..60865f5
--- /dev/null
+++ b/apps/web/src/components/dev/EventTriggersTab.tsx
@@ -0,0 +1,190 @@
+import { useState } from 'react';
+import { useGameStore } from '@/store';
+import type { FundingRoundType } from '@ai-tycoon/shared';
+
+function DevButton({ onClick, children, variant = 'default' }: {
+  onClick: () => void;
+  children: React.ReactNode;
+  variant?: 'default' | 'success' | 'danger' | 'warning';
+}) {
+  const cls = {
+    default: 'bg-surface-800 hover:bg-surface-700 border-surface-600 text-surface-300',
+    success: 'bg-emerald-500/20 hover:bg-emerald-500/30 border-emerald-500/50 text-emerald-400',
+    danger: 'bg-red-500/20 hover:bg-red-500/30 border-red-500/50 text-red-400',
+    warning: 'bg-amber-500/20 hover:bg-amber-500/30 border-amber-500/50 text-amber-400',
+  }[variant];
+  return (
+    <button onClick={onClick} className={`px-2 py-1 rounded text-xs border ${cls}`}>
+      {children}
+    </button>
+  );
+}
+
+function triggerSafetyIncident() {
+  useGameStore.setState((s) => ({
+    reputation: {
+      ...s.reputation,
+      safetyRecord: Math.max(0, s.reputation.safetyRecord - 15),
+      publicPerception: Math.max(0, s.reputation.publicPerception - 7.5),
+    },
+  }));
+  useGameStore.getState().addNotification({
+    title: '[DEV] Safety Incident',
+    message: 'Manually triggered safety incident. Safety -15, Public -7.5.',
+    type: 'danger',
+    tick: useGameStore.getState().meta.tickCount,
+  });
+}
+
+function triggerRackFailure(count: number) {
+  useGameStore.setState((s) => {
+    let remaining = count;
+    const newClusters = s.infrastructure.clusters.map((cluster) => ({
+      ...cluster,
+      campuses: cluster.campuses.map((campus) => ({
+        ...campus,
+        dataCenters: campus.dataCenters.map((dc) => {
+          if (remaining <= 0 || dc.computeRacksOnline <= 0) return dc;
+          const toFail = Math.min(remaining, dc.computeRacksOnline);
+          remaining -= toFail;
+          return {
+            ...dc,
+            computeRacksOnline: dc.computeRacksOnline - toFail,
+            computeRacksFailed: dc.computeRacksFailed + toFail,
+          };
+        }),
+      })),
+    }));
+    return { infrastructure: { ...s.infrastructure, clusters: newClusters } };
+  });
+  useGameStore.getState().addNotification({
+    title: '[DEV] Rack Failure',
+    message: `Manually failed ${count} racks across data centers.`,
+    type: 'warning',
+    tick: useGameStore.getState().meta.tickCount,
+  });
+}
+
+function resetRackFailures() {
+  useGameStore.setState((s) => {
+    const newClusters = s.infrastructure.clusters.map((cluster) => ({
+      ...cluster,
+      campuses: cluster.campuses.map((campus) => ({
+        ...campus,
+        dataCenters: campus.dataCenters.map((dc) => ({
+          ...dc,
+          computeRacksOnline: dc.computeRacksOnline + dc.computeRacksFailed,
+          computeRacksFailed: 0,
+        })),
+      })),
+    }));
+    return { infrastructure: { ...s.infrastructure, clusters: newClusters } };
+  });
+}
+
+function triggerMarketBoom(multiplier: number) {
+  useGameStore.setState((s) => ({
+    market: {
+      ...s.market,
+      consumers: {
+        ...s.market.consumers,
+        totalSubscribers: Math.round(s.market.consumers.totalSubscribers * multiplier),
+      },
+    },
+  }));
+  useGameStore.getState().addNotification({
+    title: '[DEV] Market Boom',
+    message: `Subscribers multiplied by ${multiplier}x.`,
+    type: 'success',
+    tick: useGameStore.getState().meta.tickCount,
+  });
+}
+
+function forceFunding(roundType: FundingRoundType) {
+  useGameStore.getState().raiseFunding(roundType);
+  useGameStore.getState().addNotification({
+    title: '[DEV] Funding',
+    message: `Force-raised ${roundType} funding round.`,
+    type: 'success',
+    tick: useGameStore.getState().meta.tickCount,
+  });
+}
+
+export function EventTriggersTab() {
+  const [failCount, setFailCount] = useState('10');
+  const [boomMultiplier, setBoomMultiplier] = useState('2');
+
+  const completedRounds = useGameStore((s) => s.economy.funding.completedRounds);
+  const totalFailedRacks = useGameStore((s) =>
+    s.infrastructure.clusters.reduce((sum, cl) =>
+      sum + cl.campuses.reduce((s2, ca) =>
+        s2 + ca.dataCenters.reduce((s3, dc) => s3 + dc.computeRacksFailed, 0), 0), 0));
+
+  const fundingRounds: { type: FundingRoundType; label: string }[] = [
+    { type: 'seed', label: 'Seed ($500K)' },
+    { type: 'seriesA', label: 'A ($2M)' },
+    { type: 'seriesB', label: 'B ($10M)' },
+    { type: 'seriesC', label: 'C ($50M)' },
+    { type: 'seriesD', label: 'D ($200M)' },
+    { type: 'ipo', label: 'IPO ($1B)' },
+  ];
+
+  const completedTypes = new Set(completedRounds.map((r) => r.type));
+
+  return (
+    <div className="space-y-4">
+      <div>
+        <div className="text-[10px] uppercase tracking-wider text-surface-500 mb-1.5 font-semibold">Reputation Events</div>
+        <DevButton onClick={triggerSafetyIncident} variant="danger">Trigger Safety Incident</DevButton>
+      </div>
+
+      <div>
+        <div className="text-[10px] uppercase tracking-wider text-surface-500 mb-1.5 font-semibold">
+          Infrastructure Events {totalFailedRacks > 0 && <span className="text-red-400">({totalFailedRacks} failed)</span>}
+        </div>
+        <div className="flex gap-1.5 items-center">
+          <input
+            type="number"
+            value={failCount}
+            onChange={(e) => setFailCount(e.target.value)}
+            className="bg-surface-800 border border-surface-600 rounded px-2 py-1 text-xs text-surface-100 w-16"
+            min={1}
+          />
+          <DevButton onClick={() => triggerRackFailure(Number(failCount) || 10)} variant="danger">Fail Racks</DevButton>
+          <DevButton onClick={resetRackFailures} variant="success">Reset All Failures</DevButton>
+        </div>
+      </div>
+
+      <div>
+        <div className="text-[10px] uppercase tracking-wider text-surface-500 mb-1.5 font-semibold">Market Events</div>
+        <div className="flex gap-1.5 items-center">
+          <DevButton onClick={() => triggerMarketBoom(Number(boomMultiplier) || 2)} variant="warning">Market Boom</DevButton>
+          <span className="text-xs text-surface-400">x</span>
+          <input
+            type="number"
+            value={boomMultiplier}
+            onChange={(e) => setBoomMultiplier(e.target.value)}
+            className="bg-surface-800 border border-surface-600 rounded px-2 py-1 text-xs text-surface-100 w-12"
+            min={1}
+            step={0.5}
+          />
+        </div>
+      </div>
+
+      <div>
+        <div className="text-[10px] uppercase tracking-wider text-surface-500 mb-1.5 font-semibold">Force Funding</div>
+        <div className="flex flex-wrap gap-1.5">
+          {fundingRounds.map(({ type, label }) => (
+            <DevButton
+              key={type}
+              onClick={() => forceFunding(type)}
+              variant={completedTypes.has(type) ? 'default' : 'success'}
+            >
+              {label} {completedTypes.has(type) && '✓'}
+            </DevButton>
+          ))}
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/apps/web/src/components/dev/ResourcesTab.tsx b/apps/web/src/components/dev/ResourcesTab.tsx
new file mode 100644
index 0000000..330e85c
--- /dev/null
+++ b/apps/web/src/components/dev/ResourcesTab.tsx
@@ -0,0 +1,141 @@
+import { useState } from 'react';
+import { useGameStore } from '@/store';
+import { formatMoney } from '@ai-tycoon/shared';
+
+function DevButton({ onClick, children, variant = 'default' }: {
+  onClick: () => void;
+  children: React.ReactNode;
+  variant?: 'default' | 'success';
+}) {
+  const cls = variant === 'success'
+    ? 'bg-emerald-500/20 hover:bg-emerald-500/30 border-emerald-500/50 text-emerald-400'
+    : 'bg-surface-800 hover:bg-surface-700 border-surface-600 text-surface-300';
+  return (
+    <button onClick={onClick} className={`px-2 py-1 rounded text-xs border ${cls}`}>
+      {children}
+    </button>
+  );
+}
+
+function DevInput({ value, onChange, placeholder, className = '' }: {
+  value: string;
+  onChange: (v: string) => void;
+  placeholder?: string;
+  className?: string;
+}) {
+  return (
+    <input
+      type="number"
+      value={value}
+      onChange={(e) => onChange(e.target.value)}
+      placeholder={placeholder}
+      className={`bg-surface-800 border border-surface-600 rounded px-2 py-1 text-xs text-surface-100 w-24 ${className}`}
+    />
+  );
+}
+
+export function ResourcesTab() {
+  const money = useGameStore((s) => s.economy.money);
+  const reputation = useGameStore((s) => s.reputation);
+  const researchPoints = useGameStore((s) => s.research.researchPoints);
+  const totalTrainingTokens = useGameStore((s) => s.data.totalTrainingTokens);
+
+  const [customMoney, setCustomMoney] = useState('');
+  const [customTokens, setCustomTokens] = useState('');
+  const [customRP, setCustomRP] = useState('');
+
+  const addMoney = (amount: number) => {
+    useGameStore.setState((s) => ({ economy: { ...s.economy, money: s.economy.money + amount } }));
+  };
+
+  const setMoney = (amount: number) => {
+    useGameStore.setState((s) => ({ economy: { ...s.economy, money: amount } }));
+  };
+
+  const setRepField = (field: 'safetyRecord' | 'publicPerception' | 'employeeSatisfaction' | 'regulatoryStanding', value: number) => {
+    const clamped = Math.max(0, Math.min(100, value));
+    useGameStore.setState((s) => ({ reputation: { ...s.reputation, [field]: clamped } }));
+  };
+
+  const addResearchPoints = (amount: number) => {
+    useGameStore.setState((s) => ({ research: { ...s.research, researchPoints: s.research.researchPoints + amount } }));
+  };
+
+  const addTokens = (amount: number) => {
+    useGameStore.setState((s) => ({ data: { ...s.data, totalTrainingTokens: s.data.totalTrainingTokens + amount } }));
+  };
+
+  return (
+    <div className="space-y-4">
+      <div>
+        <div className="text-[10px] uppercase tracking-wider text-surface-500 mb-1.5 font-semibold">
+          Money <span className="text-surface-400 normal-case">({formatMoney(money)})</span>
+        </div>
+        <div className="flex flex-wrap gap-1.5">
+          <DevButton onClick={() => addMoney(100_000)} variant="success">+100K</DevButton>
+          <DevButton onClick={() => addMoney(1_000_000)} variant="success">+1M</DevButton>
+          <DevButton onClick={() => addMoney(10_000_000)} variant="success">+10M</DevButton>
+          <DevButton onClick={() => addMoney(1_000_000_000)} variant="success">+1B</DevButton>
+        </div>
+        <div className="flex gap-1.5 mt-1.5">
+          <DevInput value={customMoney} onChange={setCustomMoney} placeholder="Amount" />
+          <DevButton onClick={() => { if (customMoney) setMoney(Number(customMoney)); }}>Set</DevButton>
+          <DevButton onClick={() => { if (customMoney) addMoney(Number(customMoney)); }} variant="success">Add</DevButton>
+        </div>
+      </div>
+
+      <div>
+        <div className="text-[10px] uppercase tracking-wider text-surface-500 mb-1.5 font-semibold">
+          Reputation <span className="text-surface-400 normal-case">(score: {reputation.score})</span>
+        </div>
+        <div className="space-y-1">
+          {([
+            ['safetyRecord', 'Safety Record', reputation.safetyRecord],
+            ['publicPerception', 'Public Perception', reputation.publicPerception],
+            ['employeeSatisfaction', 'Employee Satisfaction', reputation.employeeSatisfaction],
+            ['regulatoryStanding', 'Regulatory Standing', reputation.regulatoryStanding],
+          ] as const).map(([field, label, val]) => (
+            <div key={field} className="flex items-center gap-2">
+              <span className="text-xs text-surface-400 w-32">{label}</span>
+              <input
+                type="range"
+                min={0}
+                max={100}
+                value={Math.round(val)}
+                onChange={(e) => setRepField(field, Number(e.target.value))}
+                className="flex-1 h-1 accent-accent"
+              />
+              <span className="text-xs font-mono text-surface-100 w-8 text-right">{Math.round(val)}</span>
+            </div>
+          ))}
+        </div>
+      </div>
+
+      <div>
+        <div className="text-[10px] uppercase tracking-wider text-surface-500 mb-1.5 font-semibold">
+          Research Points <span className="text-surface-400 normal-case">({researchPoints.toFixed(1)})</span>
+        </div>
+        <div className="flex gap-1.5">
+          <DevButton onClick={() => addResearchPoints(5)} variant="success">+5</DevButton>
+          <DevButton onClick={() => addResearchPoints(25)} variant="success">+25</DevButton>
+          <DevButton onClick={() => addResearchPoints(100)} variant="success">+100</DevButton>
+          <DevInput value={customRP} onChange={setCustomRP} placeholder="Amount" />
+          <DevButton onClick={() => { if (customRP) addResearchPoints(Number(customRP)); }} variant="success">Add</DevButton>
+        </div>
+      </div>
+
+      <div>
+        <div className="text-[10px] uppercase tracking-wider text-surface-500 mb-1.5 font-semibold">
+          Training Tokens <span className="text-surface-400 normal-case">({(totalTrainingTokens / 1e9).toFixed(1)}B)</span>
+        </div>
+        <div className="flex gap-1.5">
+          <DevButton onClick={() => addTokens(1_000_000_000)} variant="success">+1B</DevButton>
+          <DevButton onClick={() => addTokens(10_000_000_000)} variant="success">+10B</DevButton>
+          <DevButton onClick={() => addTokens(100_000_000_000)} variant="success">+100B</DevButton>
+          <DevInput value={customTokens} onChange={setCustomTokens} placeholder="Amount" />
+          <DevButton onClick={() => { if (customTokens) addTokens(Number(customTokens)); }} variant="success">Add</DevButton>
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/apps/web/src/components/dev/StateInspectionTab.tsx b/apps/web/src/components/dev/StateInspectionTab.tsx
new file mode 100644
index 0000000..4901cf6
--- /dev/null
+++ b/apps/web/src/components/dev/StateInspectionTab.tsx
@@ -0,0 +1,108 @@
+import { useGameStore } from '@/store';
+import { formatMoney, formatNumber, formatFlops, formatPercent } from '@ai-tycoon/shared';
+
+function Section({ title, children }: { title: string; children: React.ReactNode }) {
+  return (
+    <div className="mb-3">
+      <div className="text-[10px] uppercase tracking-wider text-surface-500 mb-1 font-semibold">{title}</div>
+      <div className="grid grid-cols-2 gap-x-4 gap-y-0.5">{children}</div>
+    </div>
+  );
+}
+
+function Stat({ label, value }: { label: string; value: string | number }) {
+  return (
+    <>
+      <span className="text-xs text-surface-400">{label}</span>
+      <span className="text-xs font-mono text-surface-100 text-right">{value}</span>
+    </>
+  );
+}
+
+export function StateInspectionTab() {
+  const meta = useGameStore((s) => s.meta);
+  const economy = useGameStore((s) => s.economy);
+  const compute = useGameStore((s) => s.compute);
+  const market = useGameStore((s) => s.market);
+  const infrastructure = useGameStore((s) => s.infrastructure);
+  const reputation = useGameStore((s) => s.reputation);
+  const research = useGameStore((s) => s.research);
+  const models = useGameStore((s) => s.models);
+
+  const totalFailedRacks = infrastructure.clusters.reduce((sum, cl) =>
+    sum + cl.campuses.reduce((s2, ca) =>
+      s2 + ca.dataCenters.reduce((s3, dc) => s3 + dc.computeRacksFailed, 0), 0), 0);
+
+  const totalOnlineRacks = infrastructure.clusters.reduce((sum, cl) =>
+    sum + cl.campuses.reduce((s2, ca) =>
+      s2 + ca.dataCenters.reduce((s3, dc) => s3 + dc.computeRacksOnline, 0), 0), 0);
+
+  const pipelineRacks = infrastructure.clusters.reduce((sum, cl) =>
+    sum + cl.campuses.reduce((s2, ca) =>
+      s2 + ca.dataCenters.reduce((s3, dc) =>
+        s3 + dc.deploymentCohorts.reduce((s4, co) => s4 + co.count, 0), 0), 0), 0);
+
+  return (
+    <div className="space-y-1">
+      <Section title="Meta">
+        <Stat label="Era" value={meta.currentEra} />
+        <Stat label="Tick" value={formatNumber(meta.tickCount)} />
+        <Stat label="Speed" value={`${meta.gameSpeed}x`} />
+        <Stat label="Paused" value={meta.isPaused ? 'Yes' : 'No'} />
+      </Section>
+
+      <Section title="Economy">
+        <Stat label="Money" value={formatMoney(economy.money)} />
+        <Stat label="Revenue/tick" value={formatMoney(economy.revenuePerTick)} />
+        <Stat label="Expenses/tick" value={formatMoney(economy.expensesPerTick)} />
+        <Stat label="Total Revenue" value={formatMoney(economy.totalRevenue)} />
+        <Stat label="Valuation" value={formatMoney(economy.funding.valuation)} />
+        <Stat label="Equity" value={formatPercent(economy.funding.founderEquity)} />
+      </Section>
+
+      <Section title="Compute">
+        <Stat label="Total FLOPS" value={formatFlops(compute.totalFlops)} />
+        <Stat label="Utilization" value={formatPercent(compute.inferenceUtilization)} />
+        <Stat label="Training" value={formatPercent(compute.trainingAllocation)} />
+        <Stat label="Inference" value={formatPercent(compute.inferenceAllocation)} />
+        <Stat label="Capacity" value={`${formatNumber(compute.tokensPerSecondCapacity)} tok/s`} />
+        <Stat label="Demand" value={`${formatNumber(compute.tokensPerSecondDemand)} tok/s`} />
+      </Section>
+
+      <Section title="Market">
+        <Stat label="Subscribers" value={formatNumber(market.consumers.totalSubscribers)} />
+        <Stat label="Satisfaction" value={formatPercent(market.consumers.satisfaction)} />
+        <Stat label="Growth/tick" value={market.consumers.growthRatePerTick.toFixed(4)} />
+        <Stat label="Churn/tick" value={market.consumers.churnRatePerTick.toFixed(4)} />
+        <Stat label="Contracts" value={market.enterprise.activeContracts.length} />
+        <Stat label="API tok/tick" value={formatNumber(market.enterprise.totalApiCallsPerTick)} />
+      </Section>
+
+      <Section title="Infrastructure">
+        <Stat label="Clusters" value={infrastructure.clusters.length} />
+        <Stat label="Data Centers" value={infrastructure.totalDataCenterCount} />
+        <Stat label="Racks Online" value={totalOnlineRacks} />
+        <Stat label="Racks Failed" value={totalFailedRacks} />
+        <Stat label="In Pipeline" value={pipelineRacks} />
+        <Stat label="Total FLOPS" value={formatFlops(infrastructure.totalFlops)} />
+      </Section>
+
+      <Section title="Reputation">
+        <Stat label="Score" value={reputation.score} />
+        <Stat label="Safety" value={reputation.safetyRecord} />
+        <Stat label="Public" value={reputation.publicPerception} />
+        <Stat label="Employee" value={reputation.employeeSatisfaction.toFixed(1)} />
+        <Stat label="Regulatory" value={reputation.regulatoryStanding.toFixed(1)} />
+      </Section>
+
+      <Section title="Research & Models">
+        <Stat label="Completed" value={research.completedResearch.length} />
+        <Stat label="Points" value={research.researchPoints.toFixed(1)} />
+        <Stat label="Active" value={research.activeResearch?.researchId ?? 'None'} />
+        <Stat label="Models" value={models.trainedModels.length} />
+        <Stat label="Training" value={models.activeTraining?.modelName ?? 'None'} />
+        <Stat label="Deployed" value={models.trainedModels.filter(m => m.isDeployed).length} />
+      </Section>
+    </div>
+  );
+}
diff --git a/apps/web/src/components/dev/TimeCompletionTab.tsx b/apps/web/src/components/dev/TimeCompletionTab.tsx
new file mode 100644
index 0000000..7e77e0b
--- /dev/null
+++ b/apps/web/src/components/dev/TimeCompletionTab.tsx
@@ -0,0 +1,219 @@
+import { useState } from 'react';
+import { useGameStore } from '@/store';
+import { processTick, setAchievementDefinitions, ACHIEVEMENT_DEFINITIONS, TECH_TREE } from '@ai-tycoon/game-engine';
+import type { GameState, Era } from '@ai-tycoon/shared';
+
+function DevButton({ onClick, children, variant = 'default' }: {
+  onClick: () => void;
+  children: React.ReactNode;
+  variant?: 'default' | 'success' | 'warning';
+}) {
+  const cls = variant === 'success'
+    ? 'bg-emerald-500/20 hover:bg-emerald-500/30 border-emerald-500/50 text-emerald-400'
+    : variant === 'warning'
+      ? 'bg-amber-500/20 hover:bg-amber-500/30 border-amber-500/50 text-amber-400'
+      : 'bg-surface-800 hover:bg-surface-700 border-surface-600 text-surface-300';
+  return (
+    <button onClick={onClick} className={`px-2 py-1 rounded text-xs border ${cls}`}>
+      {children}
+    </button>
+  );
+}
+
+function extractGameState(store: ReturnType<typeof useGameStore.getState>): GameState {
+  return {
+    meta: store.meta,
+    economy: store.economy,
+    infrastructure: store.infrastructure,
+    compute: store.compute,
+    research: store.research,
+    models: store.models,
+    market: store.market,
+    competitors: store.competitors,
+    talent: store.talent,
+    data: store.data,
+    reputation: store.reputation,
+    achievements: store.achievements,
+  };
+}
+
+function skipTicks(n: number) {
+  setAchievementDefinitions(ACHIEVEMENT_DEFINITIONS);
+  const wasPaused = useGameStore.getState().meta.isPaused;
+  if (!wasPaused) useGameStore.getState().togglePause();
+
+  for (let i = 0; i < n; i++) {
+    const state = extractGameState(useGameStore.getState());
+    const result = processTick(state);
+    delete (result as Record<string, unknown>)['_notifications'];
+    useGameStore.getState().updateState(result);
+  }
+
+  if (!wasPaused) useGameStore.getState().togglePause();
+}
+
+function instantCompleteConstruction() {
+  useGameStore.setState((s) => ({
+    infrastructure: {
+      ...s.infrastructure,
+      clusters: s.infrastructure.clusters.map((cluster) => {
+        const completedCluster = cluster.status === 'constructing'
+          ? { ...cluster, status: 'operational' as const, constructionProgress: cluster.constructionTotal }
+          : cluster;
+
+        return {
+          ...completedCluster,
+          campuses: completedCluster.campuses.map((campus) => {
+            const completedCampus = campus.status === 'constructing'
+              ? { ...campus, status: 'operational' as const, constructionProgress: campus.constructionTotal }
+              : campus;
+
+            return {
+              ...completedCampus,
+              dataCenters: completedCampus.dataCenters.map((dc) => {
+                let updated = dc.status === 'constructing'
+                  ? { ...dc, status: 'operational' as const, constructionProgress: dc.constructionTotal }
+                  : dc;
+
+                if (updated.deploymentCohorts.length > 0) {
+                  let onlined = 0;
+                  for (const cohort of updated.deploymentCohorts) {
+                    if (cohort.stage !== 'decommission') {
+                      onlined += cohort.count;
+                    }
+                  }
+                  updated = {
+                    ...updated,
+                    computeRacksOnline: updated.computeRacksOnline + onlined,
+                    deploymentCohorts: [],
+                  };
+                }
+                return updated;
+              }),
+            };
+          }),
+        };
+      }),
+    },
+  }));
+}
+
+function instantCompleteResearch() {
+  const { activeResearch, completedResearch } = useGameStore.getState().research;
+  if (!activeResearch) return;
+  useGameStore.setState((s) => ({
+    research: {
+      ...s.research,
+      completedResearch: [...completedResearch, activeResearch.researchId],
+      activeResearch: null,
+    },
+  }));
+}
+
+function instantCompleteTraining() {
+  const { activeTraining } = useGameStore.getState().models;
+  if (!activeTraining) return;
+  useGameStore.setState((s) => ({
+    models: {
+      ...s.models,
+      activeTraining: { ...activeTraining, progressTicks: activeTraining.totalTicks },
+    },
+  }));
+}
+
+function unlockAllResearch() {
+  const allIds = TECH_TREE.map((n) => n.id);
+  useGameStore.setState((s) => ({
+    research: { ...s.research, completedResearch: allIds, activeResearch: null },
+  }));
+}
+
+function forceEra(era: Era) {
+  useGameStore.setState((s) => ({
+    meta: { ...s.meta, currentEra: era },
+  }));
+}
+
+export function TimeCompletionTab() {
+  const [tickCount, setTickCount] = useState('100');
+  const activeResearch = useGameStore((s) => s.research.activeResearch);
+  const activeTraining = useGameStore((s) => s.models.activeTraining);
+  const currentEra = useGameStore((s) => s.meta.currentEra);
+
+  const pipelineCount = useGameStore((s) =>
+    s.infrastructure.clusters.reduce((sum, cl) =>
+      sum + cl.campuses.reduce((s2, ca) =>
+        s2 + ca.dataCenters.reduce((s3, dc) =>
+          s3 + dc.deploymentCohorts.length, 0), 0), 0));
+
+  const constructingCount = useGameStore((s) =>
+    s.infrastructure.clusters.reduce((sum, cl) => {
+      let count = cl.status === 'constructing' ? 1 : 0;
+      count += cl.campuses.reduce((s2, ca) => {
+        let c2 = ca.status === 'constructing' ? 1 : 0;
+        c2 += ca.dataCenters.filter(dc => dc.status === 'constructing').length;
+        return s2 + c2;
+      }, 0);
+      return sum + count;
+    }, 0));
+
+  return (
+    <div className="space-y-4">
+      <div>
+        <div className="text-[10px] uppercase tracking-wider text-surface-500 mb-1.5 font-semibold">Skip Ticks</div>
+        <div className="flex gap-1.5 items-center">
+          <input
+            type="number"
+            value={tickCount}
+            onChange={(e) => setTickCount(e.target.value)}
+            className="bg-surface-800 border border-surface-600 rounded px-2 py-1 text-xs text-surface-100 w-20"
+            min={1}
+            max={10000}
+          />
+          <DevButton onClick={() => skipTicks(Number(tickCount) || 100)} variant="warning">Go</DevButton>
+          <DevButton onClick={() => skipTicks(10)}>+10</DevButton>
+          <DevButton onClick={() => skipTicks(100)}>+100</DevButton>
+          <DevButton onClick={() => skipTicks(1000)}>+1000</DevButton>
+        </div>
+        <div className="text-[10px] text-surface-500 mt-0.5">Pauses game, processes ticks, resumes</div>
+      </div>
+
+      <div>
+        <div className="text-[10px] uppercase tracking-wider text-surface-500 mb-1.5 font-semibold">Instant Complete</div>
+        <div className="flex flex-wrap gap-1.5">
+          <DevButton onClick={instantCompleteConstruction} variant="success">
+            Construction {constructingCount + pipelineCount > 0 && `(${constructingCount + pipelineCount})`}
+          </DevButton>
+          <DevButton onClick={instantCompleteResearch} variant="success">
+            Research {activeResearch && `(${activeResearch.researchId})`}
+          </DevButton>
+          <DevButton onClick={instantCompleteTraining} variant="success">
+            Training {activeTraining && `(${activeTraining.modelName})`}
+          </DevButton>
+        </div>
+      </div>
+
+      <div>
+        <div className="text-[10px] uppercase tracking-wider text-surface-500 mb-1.5 font-semibold">
+          Force Era <span className="text-surface-400 normal-case">(current: {currentEra})</span>
+        </div>
+        <div className="flex gap-1.5">
+          {(['startup', 'scaleup', 'bigtech', 'agi'] as Era[]).map((era) => (
+            <DevButton
+              key={era}
+              onClick={() => forceEra(era)}
+              variant={era === currentEra ? 'success' : 'default'}
+            >
+              {era}
+            </DevButton>
+          ))}
+        </div>
+      </div>
+
+      <div>
+        <div className="text-[10px] uppercase tracking-wider text-surface-500 mb-1.5 font-semibold">Research</div>
+        <DevButton onClick={unlockAllResearch} variant="warning">Unlock All Research ({TECH_TREE.length} nodes)</DevButton>
+      </div>
+    </div>
+  );
+}
diff --git a/apps/web/src/components/layout/MainLayout.tsx b/apps/web/src/components/layout/MainLayout.tsx
index a97a657..2292182 100644
--- a/apps/web/src/components/layout/MainLayout.tsx
+++ b/apps/web/src/components/layout/MainLayout.tsx
@@ -1,6 +1,7 @@
 import { Sidebar } from './Sidebar';
 import { TopBar } from './TopBar';
 import { ToastContainer } from '@/components/common/ToastContainer';
+import { DevMenu } from '@/components/dev/DevMenu';
 import { useGameStore } from '@/store';
 import { useHashRouter } from '@/hooks/useHashRouter';
 import { useKeyboardShortcuts } from '@/hooks/useKeyboardShortcuts';
@@ -32,6 +33,7 @@ export function MainLayout() {
         </main>
       </div>
       <ToastContainer />
+      <DevMenu />
     </div>
   );
 }
diff --git a/apps/web/src/hooks/useKeyboardShortcuts.ts b/apps/web/src/hooks/useKeyboardShortcuts.ts
index 00982a0..d764338 100644
--- a/apps/web/src/hooks/useKeyboardShortcuts.ts
+++ b/apps/web/src/hooks/useKeyboardShortcuts.ts
@@ -5,6 +5,12 @@ import type { GameSpeed } from '@ai-tycoon/shared';
 export function useKeyboardShortcuts() {
   useEffect(() => {
     const handler = (e: KeyboardEvent) => {
+      if (e.ctrlKey && e.key === 'd') {
+        e.preventDefault();
+        window.dispatchEvent(new Event('toggle-dev-menu'));
+        return;
+      }
+
       const target = e.target as HTMLElement;
       if (target.tagName === 'INPUT' || target.tagName === 'TEXTAREA' || target.tagName === 'SELECT') return;