diff --git a/apps/client/src/server.ts b/apps/client/src/server.ts
index aa9da0e..371f226 100644
--- a/apps/client/src/server.ts
+++ b/apps/client/src/server.ts
@@ -83,20 +83,50 @@ const server = Bun.serve({
       }
     },
     "/manifest": async () => {
-      await updateManifest(dir);
-      return Response.json(MANIFEST, {
-        headers,
-      });
+      try {
+        await updateManifest(dir);
+        return Response.json(MANIFEST, {
+          headers,
+        });
+      } catch (error) {
+        console.error("Failed to load manifest:", error);
+        return Response.json(
+          { error: "Failed to load manifest", details: String(error) },
+          { status: 500, headers },
+        );
+      }
     },
     "/env": () => {
-      return Response.json(getGameEnv(), { headers });
+      try {
+        const env = getGameEnv();
+        return Response.json({ ...env, tlsEnabled: !!tls }, { headers });
+      } catch (error) {
+        console.error("Failed to load environment:", error);
+        return Response.json(
+          { error: "Failed to load environment", details: String(error) },
+          { status: 500, headers },
+        );
+      }
     },
-    "/game/*": (req) => {
-      const path = new URL(req.url).pathname.replace("/game", "");
-      const file = Bun.file(join(dir, path));
-      return new Response(file, {
-        headers,
-      });
+    "/game/*": async (req) => {
+      try {
+        const path = new URL(req.url).pathname.replace("/game", "");
+        const file = Bun.file(join(dir, path));
+
+        if (!(await file.exists())) {
+          return Response.json({ error: "Game file not found", path }, { status: 404, headers });
+        }
+
+        return new Response(file, {
+          headers,
+        });
+      } catch (error) {
+        console.error(`Error reading game file ${req.url}:`, error);
+        return Response.json(
+          { error: "Error reading game file", details: String(error) },
+          { status: 500, headers },
+        );
+      }
     },
   },
 });
diff --git a/apps/website/src/cache/cache.ts b/apps/website/src/cache/cache.ts
index 6612519..f5d0236 100644
--- a/apps/website/src/cache/cache.ts
+++ b/apps/website/src/cache/cache.ts
@@ -46,6 +46,22 @@ export class GameCache {
   private async _updateCacheFile(fileManifest: IManifestFile): Promise<IExtendedManifestFile> {
     const res = await fetch(`/game/${fileManifest.path.replace(/^\/+/, "")}`);
 
+    if (!res.ok) {
+      let errorMessage: string;
+      try {
+        const errorData = await res.json();
+
+        if (errorData.path) {
+          errorMessage = `${errorData.error} : ${errorData.path}`;
+        } else {
+          errorMessage = errorData.error || `HTTP Error ${res.status}`;
+        }
+      } catch {
+        errorMessage = `HTTP Error ${res.status} on file ${fileManifest.path}`;
+      }
+      throw new Error(errorMessage);
+    }
+
     const file = await this.fs.getFile(fileManifest.path);
 
     const writable = await file.getWritable();
diff --git a/apps/website/src/index.ts b/apps/website/src/index.ts
index 3c64905..991b999 100644
--- a/apps/website/src/index.ts
+++ b/apps/website/src/index.ts
@@ -11,6 +11,11 @@ const logger = new Logger("Loader");
 
 const runLoad = async () => {
   logger.info("Starting loading game");
+  if (!window.isSecureContext) {
+    throw new Error(
+      "Storage issue: The game must be hosted with SSL (HTTPS) to enable local storage and load properly.",
+    );
+  }
 
   const manifest = await getManifest();
   runWatcher(manifest.watch);
@@ -22,6 +27,16 @@ const runLoad = async () => {
   runGame(mainModule, { files, env });
 };
 
+window.addEventListener("error", (event) => {
+  setError(event.error || event.message);
+  logger.error(`Runtime error : ${event.message}`);
+});
+
+window.addEventListener("unhandledrejection", (event) => {
+  setError(event.reason);
+  logger.error(`Unhandled promise rejection : ${event.reason}`);
+});
+
 runLoad()
   .then(() => {
     logger.info("Game loaded !");
diff --git a/apps/website/src/window.ts b/apps/website/src/window.ts
index 6c0031e..b4a3996 100644
--- a/apps/website/src/window.ts
+++ b/apps/website/src/window.ts
@@ -37,11 +37,15 @@ export const setLoadingTotalFiles = (total: number) => {
   totalFiles = total;
 };
 
-export const setError = (error: string) => {
+export const setError = (error: string | Error | unknown) => {
   const loaderErrorMessage = document.getElementById(IDS.loaderErrorMessage);
 
   if (!loaderErrorMessage) return;
-  loaderErrorMessage.innerText = error;
+  const errorMessage = error instanceof Error ? error.message : String(error);
+  loaderErrorMessage.innerText = errorMessage;
+
+  setHiddenStatusOnId(IDS.container, true);
+  setHiddenStatusOnId(IDS.loader, false);
 
   setHiddenStatusOnId(IDS.loadingStatus, true);
   setHiddenStatusOnId(IDS.loaderError, false);