Mario + Rabbids Kingdom Battle is a real game and is coming to Switch. This was made official after a leak today of the artwork. The leaked image was taken down but then the following image was provided by Ubisoft to comicbook.com, thereby giving official proof the game is real.
This is an unusual combination for Nintendo, but I have to say, that the art style looks interesting and I am intrigued by this. With Nintendo supervising, the gameplay will no doubt be awesome. Are you excited?