Diablo 2 and expansion, and by a long shot.
- it is still a major seller today, despite aging graphics,
- I almost failed yr 11 coz i was sooooooooo addicted to it
- so did many of my friends, friends of friends, their aquaintences, etc.
- oh yeah, staying awake became harder and harder as a result too
- I especially loved the huuuuge amount of items, weapons etc that you could get in the game. I havent started playing oblivion yet, but I think diablo's range far surpasses it still both in imagination and variety.
- also very well done was the many individual ways you could use each weapon/weapon class (eg. double throwing axes could be used to throw or swing both at same time)
- replayability didnt help improve my sleeping habits either!!!!!