Well, two answers since one category beats the other one without no doubt:

a) party-based games like Virtua Tennis, Bomberman, ChuChu Rocket, MicroManiacs, Soccer Slam and the like. The social experience, competing against or teaming up with your friends is half of the fun. I wouldn''t touch any of the games when noone else is around (except maybe Virtua Tennis), but when being played together with other people they can be incredibly entertaining. That''s what they were made for, of course.

b) ... as for single-player games I guess I''d list LucasArts adventures such as Secret of Monkey Island I&II, Indy IV, DotT and Grim Fandango. Tons of jokes and hardly any frustration you could encounter. I''ve beaten Monkey Island like 6 or 7 times now ... despite knowing all the puzzles and whatnot. Great title.

The first Civ. I would look up and the clock would say that it was four hours later, and I would wonder how that could be when I only sat down to play for a half hour or so...

Hhmm....that''s a tough one. I''d have to say any incarnation of Worms when multiple people on the same PC are involved.

I am compelled to add NCAA 2002 and 2004 to the list. Gotsta love the football.

Perhaps not the most fun but we used to have a blast playing Ultimate Fighting on the Dreamcast even though we had no clue how to play the game at all.

Bonk''s Adventure and Bonk''s Revenge. I knew those games inside and out.

Deus Ex

I would have to go with Starcraft, so much fun playing team games with my best friend.

After work LAN sessions of Unreal Tournament, Serious Sam (co-op) and various console titles (Virtua Tennis, DOA3, Halo).

Interesting... my list is made up of multiplayer games. Normally I would say that I tend to shy away from mp games and enjoy the single player experience more. I really don''t like playing games with folks I don''t know (I''m like so introverted).

But like Elysium mentioned, I guess there''s more fun in sharing the experience and the good-natured trash-talking. Thief, Divine Divinity, Ultima 4, Grim Fandango, Day of the Tentacle, Lode Runner, Diablo, Planescape: Torment... I could list all kinds of great single player games I''ve enjoyed over the years. But the ""most funnest"" have been shared with friends in my living room, over the modem, etc.

For the recent games, every Civ, Alpha Centauri, HL, every Doom, Medieval: Total War, the HOMM series, BF1942, the Baldurs Gate series, Halo, FF 7, 10 & Tactics, Castlevania Symphony of the Night.

I loved & played to death pretty much every classic PC & console RPG in my earlier years, when I actually had time to do so.

I guess my early days in gaming were more enjoyable than they are now. I wasnt allowed to play video games when I was a kid so when I moved out of the house thats all I did

Anyway, that was when the Sega Genesis was the $hit and I have to admit, I put more hours into Herzog Zwei and Master of Monsters than all other games combined accept for maybe Doom. They were just downright FUN. I still have that old genesis and whenever I get bored with what I got I plug it back in the open coax port on the TV and have another couple rounds with those 2 games.

Damn fun

PAR

Oh yeah Megalomania on the Genesis and the first gameboy Castlevania!

Mario 3 and Donkey Kong Country on SNES
First halves of Zelda WW and Super Mario Sunshine also very fun.

I''m a big Nintendo first party fan, they make the most pure fun games I have played. Many other games like the one''s mentioned (Starcraft, Deus Ex, etc...) are great games I also enjoyed, but they were not the pure make you feel like you''re five again fun.

Yeah cheaters...Single game only..

Think..which one is the top??

Doom.

It''s strange... I remember playing all sorts of games from the Atari 2600 and the NES or SNES or Genesis and whatnot, and having fun with all of them, even the crap games. But nothing ever gripped me like Doom. That was the game that really changed how I look at video games. It was at once visceral and fast paced and thought provoking, and it really did blow me away.

I mean, yeah, I loved other games before Doom, and I''ll love games after, but that was probably the turning point, where I started viewing games as an art form instead of just entertainment.