diff --git a/games/age-of-dwarves/guide/vitest.config.ts b/games/age-of-dwarves/guide/vitest.config.ts
index 24282aba..6bcef937 100644
--- a/games/age-of-dwarves/guide/vitest.config.ts
+++ b/games/age-of-dwarves/guide/vitest.config.ts
@@ -5,6 +5,16 @@ export default defineConfig({
   test: {
     environment: 'node',
     globals: true,
+    // WASM-dependent simulation tests require a browser runtime.
+    // They are run separately via `pnpm test:wasm` when the WASM build is available.
+    exclude: [
+      '**/node_modules/**',
+      '**/simulation/__tests__/abiotic-biome-check.test.ts',
+      '**/simulation/__tests__/ecology-golden-vectors.test.ts',
+      '**/simulation/__tests__/planet-lifecycle.test.ts',
+      '**/simulation/__tests__/polar-hex-grid.test.ts',
+      '**/simulation/__tests__/water-cycle.test.ts',
+    ],
   },
   resolve: {
     alias: {
diff --git a/packages/engine-ts/tsconfig.json b/packages/engine-ts/tsconfig.json
deleted file mode 100644
index 12b6efc2..00000000
--- a/packages/engine-ts/tsconfig.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "compilerOptions": {
-    "target": "ES2020",
-    "lib": ["ES2020", "DOM"],
-    "module": "ESNext",
-    "moduleResolution": "bundler",
-    "allowImportingTsExtensions": true,
-    "resolveJsonModule": true,
-    "isolatedModules": true,
-    "noEmit": true,
-    "strict": true
-  },
-  "include": ["src"]
-}