Wesloe
Would you prefer the God of War kind of style for a game its pretty cool if you've played god of war.Or fun tweak kinds of games like warioware or rayman raving rabbits.The last choice kind of game style is the classic sidescroller such as the original metroid games mario and the classic megaman games. I dont know how to do the poll kind of thing so just post your answer
Tactical war type games or Action Adventure. More of an Role Playing Games type gamer myself. One tactical game that sounds pretty cool though is Guild Wars. If you want a challenging Action Adventure type game try Battletoads and Double Dragon(SEGA), Kid Cameleon(SEGA) or Devil May Cry(PS2).
Also a few addictive games that I can think of off the top of my head are Bubble Bobble(NES), Kajero Deception(PS1) and Dot Hack(PS2). You also can't go wrong with the Final Fantasy series. Just stay away from Tactics Advanced, FF X-2 and FF12 I have all three and wasn't really that impressed at all.