Wario Ware: DIY Do it Yourself for Nintendo DS
On March 28, WarioWare D.I.Y. lets users design their own micro-games from scratch and share them with other WarioWare D.I.Y. owners via a broadband Internet connection and Nintendo Wi-Fi Connection. Every element, such as the characters, the environment, the actions and even the purpose of the micro-game itself, can be created entirely by the player.