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
Mario + Rabbids: Kingdom Battle is a direct crossover between the two series. Being a turn-based tactics game, it's different than any game in either franchise to date.
It features eight selectable characters, four from the Mario series, and four rabbids dressed as those same characters: Mario, Luigi, Yoshi, Peach, Rabbid Mario, Rabbid Luigi, Rabbid Yoshi and Rabbid Peach. Secondary characters include Toad and Toadette from the Mario series, and the original Rabbid character Spawny.
Most enemies are rabbids dressed in various outfits, some based on the Mario series, including Pirabbid Plant (dressed like a Piranha Plant), Bwario (wearing Wario's outfit) and Bwaluigi (wearing Waluigi's outfit). Bowser Jr. in his Mecha Jr. robot, and Bowser, in a transformation called MegaDragonBowser, also appear as bosses in the last level of the game.
The Donkey Kong Adventure Expansion Pack, released on June 26, 2018, also added Donkey Kong and Rabbid Cranky to the game, though that's considered a reference to the Donkey Kong series.
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.
Mario + Rabbids: Kingdom Battle is the result of a collaboration between Ubisoft and Nintendo.