Any wild idea having anything to do with Mario can get put up here. But first you have to send it in. The idea should have the basic premise, and any storyline at least. You could also go into detail on st uff like possible enemies, new characters, levels, etc. Make it as long or as short as you want.
Featured games are ideas that went above and beyond regular ideas in detail and quality.
I changed the address for a reason. The address remains the same. I'll try to get a new GI address so you can keep sending them in. Interesting item system and in depth descriptons of everything make this interesting. All by Joey Hines, these idea submissions show you how NOT to do a game idea.