--- a/src/lib/compiler/compileData.ts
+++ b/src/lib/compiler/compileData.ts
@@ -2068,9 +2068,8 @@
     usedSceneTypeIds,
   });
 
-  output[`game_signature.c`] = compileSaveSignature(
-    JSON.stringify(projectData)
-  );
+  // FredyGames: fixed input (the hash of the whole project data changes on every run), so builds are reproducible.
+  output[`game_signature.c`] = compileSaveSignature("fredygames");
 
   return {
     files: output,