We had a serious bug, that causes textures to disappear on some intel gpu's, making the game unplayable. The "gles2_windows.zip", "gles2_linux.zip" and "gles2_mac.zip" are fixed versions of our game. The only change was switching from GLES3 to GLES2 in the godot engine and recompiling the code (so literary one tick box). Otherwise the two versions are identical.