Spiderman 2 and GTA. Imagine being able to swing from building to building and having all those moves in addition to all the weapons and vehicles of GTA. It wouldn't make sense, but it would be pretty fun. Just for the hell of it, combine those two with Tony Hawk's American Wasteland or Underground. I'm picturing swinging from the side of a building with an uzi in one hand, shooting people, then landing on your board and skateboarding down a sidewalk while shooting people while doing tricks, then swinging away from the cops with your webs. Also, skateboarding on skyscrapers sounds cool to me. Or you could web a person and drag them while you're skateboarding. Or attach your web to a helicopter, climb up and throw the pilot out to plummet to his death. I could go on and on.