diff --git a/index.html b/index.html
index a72a7b0c2..c6a0f11d1 100644
--- a/index.html
+++ b/index.html
@@ -58,6 +58,9 @@
       window.GIT_COMMIT = <%- gitCommit %>;
       window.INSTANCE_ID = <%- instanceId %>;
       window.ASSET_MANIFEST = <%- assetManifest %>;
+      window.BOOTSTRAP_CONFIG = {
+        gameEnv: <%- gameEnv %>,
+      };
       document.documentElement.style.setProperty(
         "--background-image-url",
         `url("<%- backgroundImageUrl %>")`,
diff --git a/src/core/configuration/ConfigLoader.ts b/src/core/configuration/ConfigLoader.ts
index 15771873b..0b8c79c8a 100644
--- a/src/core/configuration/ConfigLoader.ts
+++ b/src/core/configuration/ConfigLoader.ts
@@ -9,6 +9,14 @@ import { prodConfig } from "./ProdConfig";
 
 export let cachedSC: ServerConfig | null = null;
 
+declare global {
+  interface Window {
+    BOOTSTRAP_CONFIG?: {
+      gameEnv?: string;
+    };
+  }
+}
+
 export async function getConfig(
   gameConfig: GameConfig,
   userSettings: UserSettings | null,
@@ -30,16 +38,20 @@ export async function getServerConfigFromClient(): Promise<ServerConfig> {
   if (cachedSC) {
     return cachedSC;
   }
-  const response = await fetch("/api/env");
 
+  const bootstrapGameEnv = window.BOOTSTRAP_CONFIG?.gameEnv;
+  if (bootstrapGameEnv) {
+    cachedSC = getServerConfig(bootstrapGameEnv);
+    return cachedSC;
+  }
+
+  const response = await fetch("/api/env");
   if (!response.ok) {
     throw new Error(
       `Failed to fetch server config: ${response.status} ${response.statusText}`,
     );
   }
   const config = await response.json();
-  // Log the retrieved configuration
-  console.log("Server config loaded:", config);
 
   cachedSC = getServerConfig(config.game_env);
   return cachedSC;
@@ -63,3 +75,7 @@ export function getServerConfig(gameEnv: string) {
       throw Error(`unsupported server configuration: ${gameEnv}`);
   }
 }
+
+export function clearCachedServerConfig(): void {
+  cachedSC = null;
+}
diff --git a/src/server/RenderHtml.ts b/src/server/RenderHtml.ts
index 2b2b3db17..9c31b2721 100644
--- a/src/server/RenderHtml.ts
+++ b/src/server/RenderHtml.ts
@@ -11,6 +11,7 @@ export async function renderHtmlContent(htmlPath: string): Promise<string> {
     gitCommit: JSON.stringify(process.env.GIT_COMMIT ?? "undefined"),
     instanceId: JSON.stringify(process.env.INSTANCE_ID ?? "undefined"),
     assetManifest: JSON.stringify(assetManifest),
+    gameEnv: JSON.stringify(process.env.GAME_ENV ?? "dev"),
     manifestHref: buildAssetUrl("manifest.json", assetManifest),
     faviconHref: buildAssetUrl("images/Favicon.svg", assetManifest),
     gameplayScreenshotUrl: buildAssetUrl(
diff --git a/tests/core/configuration/ConfigLoader.test.ts b/tests/core/configuration/ConfigLoader.test.ts
new file mode 100644
index 000000000..65fd81757
--- /dev/null
+++ b/tests/core/configuration/ConfigLoader.test.ts
@@ -0,0 +1,24 @@
+import { beforeEach, describe, expect, test, vi } from "vitest";
+import { GameEnv } from "../../../src/core/configuration/Config";
+import {
+  clearCachedServerConfig,
+  getServerConfigFromClient,
+} from "../../../src/core/configuration/ConfigLoader";
+
+describe("ConfigLoader", () => {
+  beforeEach(() => {
+    vi.restoreAllMocks();
+    window.BOOTSTRAP_CONFIG = undefined;
+    clearCachedServerConfig();
+  });
+
+  test("uses bootstrap config without fetching /api/env", async () => {
+    window.BOOTSTRAP_CONFIG = { gameEnv: "prod" };
+    const fetchSpy = vi.spyOn(globalThis, "fetch");
+
+    const config = await getServerConfigFromClient();
+
+    expect(config.env()).toBe(GameEnv.Prod);
+    expect(fetchSpy).not.toHaveBeenCalled();
+  });
+});
diff --git a/vite.config.ts b/vite.config.ts
index 5fa1b9912..eefc073c2 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -27,6 +27,7 @@ export default defineConfig(({ mode }) => {
     : {};
   const htmlAssetData = {
     assetManifest: JSON.stringify(assetManifest),
+    gameEnv: JSON.stringify(env.GAME_ENV ?? "dev"),
     manifestHref: buildAssetUrl("manifest.json", assetManifest),
     faviconHref: buildAssetUrl("images/Favicon.svg", assetManifest),
     gameplayScreenshotUrl: buildAssetUrl(