I've probably played through MP2 about 80 times. Definitely tops my list. Doom 2 is right up there as well.Max Payne 1/2
I don't play them a whole lot, but a couple of games I keep coming back to over time...
One Must Fall: 2097
This is a serious question.
If I get to play with Friends via LAN/Multiplier/Online It would be a close battle between these but I'll list them in order
1>Saturn Bomberman: 8 Player battles are an insanity of fun.
2>Warcraft 3: (so many mods like Tower Defense this game could be endless)
3> Diablo 2: Very fun with friends
If I'm Playing alone.
1>Shining Force 3 the entire game:.....Partly because I'd be learning Japanese for the last 2 disc and also partly its like a 80+ hours game with a bunch of different characters to play.
2>Shining force 2: I have already pretty much played this over and over
3>Xenogears: Long, deep, and slow.