diff --git a/src/WorldshaperLauncher.tsx b/src/WorldshaperLauncher.tsx
index 668fb38..f2a2c02 100644
--- a/src/WorldshaperLauncher.tsx
+++ b/src/WorldshaperLauncher.tsx
@@ -11,6 +11,8 @@ import {
 import type { ChangelogItem } from "./worldshaperStudio/changelogData";
 import launcherBackground from "../background.png";
 
+declare const __APP_BUILD__: string;
+
 type WorldDefaultPayload = {
   worldId?: string;
   world?: {
@@ -2257,6 +2259,7 @@ function WorldshaperLauncher() {
             </div>
           </div>
         </section>
+        <div className="launcher-build-stamp">Build {__APP_BUILD__}</div>
       </div>
       {adminPanelOpen && logsModalOpen ? (
         <div className="launcher-modal-backdrop" onClick={() => setLogsModalOpen(false)}>
diff --git a/src/index.css b/src/index.css
index b9e7f10..c7b58a6 100644
--- a/src/index.css
+++ b/src/index.css
@@ -77,6 +77,13 @@ body {
   width: min(1440px, 100%);
 }
 
+.launcher-build-stamp {
+  color: #7f90ab;
+  font-size: 11px;
+  line-height: 1.4;
+  text-align: center;
+}
+
 .launcher-hero-window,
 .launcher-changelog-window {
   border: 1px solid #4f79af;
diff --git a/vite.config.ts b/vite.config.ts
index a1d7a18..bbfed1e 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -1,10 +1,29 @@
+import { execSync } from "node:child_process";
+import { readFileSync } from "node:fs";
 import { resolve } from "node:path";
 import { defineConfig } from "vite";
 import react from "@vitejs/plugin-react";
 
+const packageJson = JSON.parse(readFileSync(resolve(__dirname, "package.json"), "utf8")) as { version?: string };
+
+function readGitCommit(): string {
+  try {
+    return execSync("git rev-parse --short HEAD", { cwd: __dirname, stdio: ["ignore", "pipe", "ignore"] })
+      .toString()
+      .trim();
+  } catch {
+    return "dev";
+  }
+}
+
+const appBuildLabel = `v${packageJson.version || "0.0.0"}-${readGitCommit()}`;
+
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [react()],
+  define: {
+    __APP_BUILD__: JSON.stringify(appBuildLabel),
+  },
   build: {
     rollupOptions: {
       input: {