1. Homeworld (by a long shot)
2. Unreal Tournament (first FPS, still a great game today, pity about UT3)
3. The Orange Box/Garry's Mod (just wow. cannot WAIT for episode 3)
4. Fallout 3 (THE best single player RPG i've played.)
5. World of Warcraft: Burning Crusade (blew me away upon first playing it)
1. SW Republic Commando ( what can I say, I'm a sucka for Star Wars )
1. Discovery Freelancer ( this explains itself )
2. Half-Life ( Half-Life 2 is good, but the original is better )
3. SW Jedi Knight ( Star Wars, enough said )
3. Morrowind ( best RPG game, complex and fun )
4. Operation Flashpoint ( very good )
5. X2 & 3 ( to complex for my liking but well... )
I can't pick the best 5 since there are so many games that deserve to be mentioned. I tried putting games that few or none mentioned on the list.
Chrono Trigger (Nintendo DS) Metroid Prime (Nintendo Gamecube) Punch-Out!! {Nintendo Wii) Independence War 2: Edge of Chaos (PC) Need for Speed: Most Wanted (Multi-Platform)
Mind you, these are just the games I have played. I would of added Hardwar and Icebreaker to the list, but those are 11 years old and 15 years old, respectively