Kind of a hard question, so I base this question on the fact if I had the most fun playing the game for the time it was released. I mean I find Age of Mythologies more fun than AOE2 right now, but I had certainly more fun playing AOE2 than AOM later.
Best:
1. Age Of Empires 2: The Conquerors Expansion (pc)
2. Unreal Tournament (pc)
3. Half-Life + (Day of Defeat, Counter Strike, Team Fortress mods) (pc)
4. Street Figher Alpha 2 (SNES)
5. Super Smash Bros Melee (gamecube)
I base the worsts on the least amount of fun playing for its release date.
Worst:
1. The Sims (I want a clear mission!)
2. KKND2 Crossfire (Command & Conquer still dominates)
3. M.A.X. 2 (same as for KKND2)
