Remember this great game from the Sega Arcade/ Saturn? I think an iclone game would work out well for two reasons. 1) Its style of graphics have been done before (ExZeus). 2) More importantly, its controls and playability would handle well on the iphone (unlike ExZeus). If you remember, instead of constantly turning around to face your opponent, playability occurs in spurts; camera is locked facing your opponent even when dashing sideways and launching attacks. On the iphone this means you can play a 3D fighting game without worrying about the camera! Only buttons you need are dash, attack, and special attack, with maybe an iDracula style wheel for movement. What do you think?