Rayman Raving Rabbids 2 (Nintendo DS)
November 13, 2007
The Nintendo DS version of Rayman Raving Rabbids 2 features a minigame called "Lunch Time" that takes place in a construnction site and consists in tapping the touch screen to make the player's Rabbid walk on a girder to reach a packed lunch at the end before the two rival Rabbids. The player must stop tapping to make the Rabbid cower and avoid swinging objects that would knock him down.
One of the swinging object is a green pipe likely shaped after a Warp Pipe from the Mario series.
Additionally a preview image of the game featured a Rabbid dressed like Mario, possibly indicating that there was originally intended to be one, but was later scrapped.
Mario + Rabbids Kingdom Battle
August 29, 2017
The creators of Rayman Raving Rabbids, had no right to use elements from the Mario series, so they only included a subtle reference in a minigame. Also the Mario-Rabbid was possibly removed from the game to avoid issues with Nintendo.