diff --git a/guide/age-of-dwarves/src/simulation/__tests__/abiotic-biome-check.test.ts b/guide/age-of-dwarves/src/simulation/__tests__/abiotic-biome-check.test.ts
index dfc5ac42..d4e739d2 100644
--- a/guide/age-of-dwarves/src/simulation/__tests__/abiotic-biome-check.test.ts
+++ b/guide/age-of-dwarves/src/simulation/__tests__/abiotic-biome-check.test.ts
@@ -10,8 +10,8 @@ import {
   type TerrainData,
   type TileState,
 } from '@magic-civ/engine-ts'
-import specData from '../../../../../games/age-of-dwarves/data/climate_spec.json'
-import climateParamsData from '../../../../../games/age-of-dwarves/data/climate_params.json'
+import specData from '../../../../../engine/src/worlds/earth/climate_spec.json'
+import climateParamsData from '../../../../../engine/src/worlds/earth/climate_params.json'
 
 const BIOLOGICAL_BIOMES = new Set([
   'grassland', 'forest', 'savanna', 'jungle', 'alpine_meadow',
diff --git a/guide/age-of-dwarves/src/simulation/__tests__/planet-lifecycle.test.ts b/guide/age-of-dwarves/src/simulation/__tests__/planet-lifecycle.test.ts
index 329b0965..29eb9bfe 100644
--- a/guide/age-of-dwarves/src/simulation/__tests__/planet-lifecycle.test.ts
+++ b/guide/age-of-dwarves/src/simulation/__tests__/planet-lifecycle.test.ts
@@ -15,7 +15,7 @@ import {
   type GridState,
   type TurnStats,
 } from '@magic-civ/engine-ts'
-import climateParamsData from '../../../../../games/age-of-dwarves/data/climate_params.json'
+import climateParamsData from '../../../../../engine/src/worlds/earth/climate_params.json'
 
 const params: Record<string, number> = Object.fromEntries(
   Object.entries(climateParamsData as Record<string, unknown>)
@@ -137,6 +137,7 @@ describe('hadean earth scenario', () => {
 // ── ice age ───────────────────────────────────────────────────────────────
 
 describe('ice age scenario', () => {
+  // worldAge=2000 → 2100 total turns
   it('polar temperatures are lower than equatorial', () => {
     const config = findScenario('ice_age')
     const result = runScenarioSync(config, terrainCache, params, SHORT_TURNS, SEED)
@@ -152,12 +153,13 @@ describe('ice age scenario', () => {
     if (polarCount > 0 && eqCount > 0) {
       expect(polarSum / polarCount).toBeLessThan(eqSum / eqCount)
     }
-  })
+  }, 20_000)
 })
 
 // ── desertification ───────────────────────────────────────────────────────
 
 describe('desertification scenario', () => {
+  // worldAge=2000 → 2100 total turns
   it('produces valid simulation output', () => {
     const config = findScenario('desertification')
     const result = runScenarioSync(config, terrainCache, params, SHORT_TURNS, SEED)
@@ -165,12 +167,13 @@ describe('desertification scenario', () => {
     const last = lastStats(result)
     expect(last.avg_moisture).toBeGreaterThanOrEqual(0)
     expect(last.avg_moisture).toBeLessThanOrEqual(1)
-  })
+  }, 20_000)
 })
 
 // ── volcanic winter ───────────────────────────────────────────────────────
 
 describe('volcanic winter scenario', () => {
+  // worldAge=2000 → 2100 total turns
   it('produces valid simulation output with aerosol stats', () => {
     const config = findScenario('volcanic_winter')
     const result = runScenarioSync(config, terrainCache, params, SHORT_TURNS, SEED)
@@ -178,7 +181,7 @@ describe('volcanic winter scenario', () => {
     // Volcanic winter should produce nonzero aerosol levels
     const mid = Math.floor(SHORT_TURNS / 2)
     expect(result.snapshots[mid]!.stats.avg_aerosol).toBeGreaterThanOrEqual(0)
-  })
+  }, 20_000)
 })
 
 // ── simulation determinism ────────────────────────────────────────────────
diff --git a/guide/age-of-dwarves/src/simulation/__tests__/water-cycle.test.ts b/guide/age-of-dwarves/src/simulation/__tests__/water-cycle.test.ts
index 8ed823cd..5287f5f9 100644
--- a/guide/age-of-dwarves/src/simulation/__tests__/water-cycle.test.ts
+++ b/guide/age-of-dwarves/src/simulation/__tests__/water-cycle.test.ts
@@ -17,8 +17,8 @@ import {
   type TerrainData,
   type TileState,
 } from '@magic-civ/engine-ts'
-import climateParamsData from '../../../../../games/age-of-dwarves/data/climate_params.json'
-import specData from '../../../../../games/age-of-dwarves/data/climate_spec.json'
+import climateParamsData from '../../../../../engine/src/worlds/earth/climate_params.json'
+import specData from '../../../../../engine/src/worlds/earth/climate_spec.json'
 
 // ── shared setup ──────────────────────────────────────────────────────────