The idea of the Sparks came about as a way to evolve the combat system from Mario + Rabbids Kingdom Battle by stepping away from its focus on traditional weapons and the option to discard weaker weapons for better ones. However, the developers felt that the Sparks needed to visually fit into the game's world and not just function as "skills", resulting in a lengthy design process. According to lead producer Xavier Manzanares, the design of the Sparks as seen in the game's promotional art was the 25th attempt at designing them.