Press space to switch through backdrops. Press 1 to filter the city, press 2 to filter the boardwalk, press 3 to filter the heart with the pink backdrop, and press 4 to filter the heart with the purple backdrop. Also hold shift while clicking green flag for turbo mode, or else it looks extremely slow.
Credit to CSFirst for guides. Remember to put Turbo Mode! Hold shift while clicking green flag.
