WarioWare - D.I.Y. (U) ROM

Even if you have zero creativity, you can still edit the existing games, changing, for example, a balloon-popping game into a flying monkey-shooting game. There is no end to the content, especially if you have many friends with the game to share over wifi. It has it's limits, but within those, your creativity is pushed to ITS limits. This game is awesome.

If you can get past the coveted Black screen than you will experience perhaps one of the greatest games of all time. In warioware DIY you and yes YOU get to create your own microgames and share it with the rest of the world via Nintendo WiFi.
 
WARNING: Common sense is needed to create microgames.

Warioware D.I.V is a game that you can create your own micro games. You could also make tracks for people to hear and comics for people to read. You could share your micro games, tracks and comics to the whole world! If you don't know how the game works, you can play lessons on all of the thngs in this game. After you made a few of traks, micro games and comics you can ship all of your things to a shop where you can play or hear or read your things!