Verizon charges a arm and a leg for everything, kind of sucks...but I really love Tetris and always try to beat my highest score I played Zuma before that is always pretty cool..I never played Gutar Hero on a phone so I dunno...
That's just my answer, I'm sure you'll get alot more
Kind of depends ,do you like music stuff? or like putting blocks in the right place...Honestly I don't think they are worth the money unless you are never at home and can't play games on a PC or gaming console or anything else, on att or tmobile etc you can find web sites with tons n tons of free games for your phone...just type in ur phone model..