The game's memory contains several unused sprites:
• A checkpoint flag that unfurls and rises to the top of a pole. It is found with the rest of the World 1 graphics and is the only checkpoint flag in the game's data.
• A suit of armor located amongst the various background objects for World 4.
• A complete animation cycle for old-man Rapo facing upwards.
• An early version of the World 3 map, which is missing several details such as the colors for the top right of the screen.