According to Davide Soliani, the idea of a Mario and a Raving Rabbids crossover game went through over 13 ideas(two of them being a musical themed game and a FPS game) before the team decided to settle with the turn based tactical RPG game.

"We knew we needed to come up with a new idea, or a new visual or new mechanics. We started to scratch them out, one after the other. We went through a musical game, a first-person shooter game; but really the team is composed of mainly tactical fans''