Combining the game with the internet meme, Nyan Cat (involving a cat with the body of a Pop-Tart flying through space and leaving a trail of rainbows), a parody game called Nyanicorn was created that mimicked the style of Robot Unicorn Attack, including the gameplay [REF].
There is also a fan-made version called "Rainbow Dash Attack", where the eponymous Robot Unicorn is replaced by Rainbow Dash, a pegasus character from the series My Little Pony: Friendship is Magic.