Milo and the Rainbow Nasties was going to be an action game / platform in which the player would had to bring the colors back to the world after some weird bugs consumed it all. Originally the game was in development by Warthog Games for the XBOX, Playstation 2 and GameCube, but then it became a Gizmondo exclusive (as it happened with Johnny Whatever), untill its final cancellation. In February 2006, the owners of Warthog, Tiger Telematics, went bankrupt and therefore all their games were cancelled.
The concept of this game was never detailed considering it had a short lifespan, the gist of the plot was the world in which the player was in is overcome with darkness / bug creatures. The player was to clean this world using color, the concept was very similar to Super Mario Sunshine.