i am downloading it still , a lot of mixed opinion on the game lets see

My top 5 PC games of all time:
Command & Conquer: Renegade
Elder Scrolls: Oblivion
Rollercoaster Tycoon 3
Day Of The Tentacle
Command & Conquer: Tiberian Dawn

It's hard to make a list, but from the top of my head:
1. Fallout 2
2. Baldur's Gate 2
3. Imperium Galactica 2
4. Civilization 3
5. Homm3

Maybe I expand my earlier list with explanations why I picked them:

5. GTA 3

- I've first played it on PC, but along with games like Gran Turismo (even with its indestructible cars) and Silent Hill, it was one of those games that even a die-hard PC purist had to say "Ok, I admit, there are some quite cool games on consoles.".

4. Ultima Underworld

- This had a very big impact on me on the day. It was both a technical marvel then, but also good as a game. And somehow the whole setting with being closed to a dungeon without knowing what is waiting there, and finding a rich(?) culture down there with lots to do, really hit the spot.

3. Baldur's Gate 2

- I have only recently played this. Already finished the main game, now playing the expansion pack. Others who mentioned this said it pretty well already, it has pretty much all the things I'd wait from a good RPG, like story, pacing, strategic challenge, developing your characters, making decisions that may (or may not) affect how the game world will see you, etc.

And I found the first BG somewhat boring and average, but this is a gem. When I have been playing this, I've felt little reason to take breaks from it and play something else instead. That's always a sign of a good game.

2. Quake TeamFortress

- The first online multiplayer FPS game where I felt that being in a team really mattered. Even though there were also some earlier team games, they still felt people were not really playing as teams, but everyone just trying to rack more points than anyone else.

That, and the inclusion of several different player classes with wildly different playing styles, made it pretty easy also for beginners to jump in, and rely on more experienced players helping them out (or learn by watching, what the other team members do). I wouldn't mind playing the original Quake TF even today, even though it has been surpassed by TeamFortress Classic and Team Fortress 2. I guess I should try to concentrate more on TF2 to learn it better, but then my single-player backlog would just keep growing...

1. Starcraft

- While there were RTS games about the same time which were technically better (especially the user interface), SC + Brood War had two different things over other RTS games: an interesting story, and three wildly different factions which were still balanced quite well. I ever played it only in single-player, but I was intrigued by starting a new campaign with a different faction (Terran, Zerg or Protoss) and learning the new way to play the same game, and learning their strengths and weaknesses.

Compare that to RTS games like Dune 2, C&C games or Total Annihilation, where the differences between factions felt more like cosmetic. Sure some faction might have more powerful and slower tanks while someone had some different flying special units, but overall the gaming experience was so similar between them. Less so in Starcraft.

Too bad about the special missions which deviated from the base building levels, I mostly hated them and wanted to finish them ASAP.

Chaos Strikes Back

Ultima Underworld

Baldur's Gate 2

Thief: The Dark Project

Age of Wonders: Shadow Magic

I am glad to see Ultima Underworld: The Stygian Abyss mentioned a few times. It will to me forever remain the best game of all time.

To me the original Jagged Alliance deserves to be amongst the top 5. As for the remaining spots, I can't decide.

+1 for Chaos strikes back :)

My list:
Monkey Island 2
Master of Magic
DM/CSB
Privateer
Total Annihilation

Edit: -Fallout (mentioned often enough), +TA

Tough one, the top5 games to impact my gaming would perhaps be:

- X-wing
- Ultima 5
- Civ 1
- UFO 1
- Dune 2

TOP5 "ever" is kinda difficult to say. impossible.

My list isn't set in stone, and it certainly isn't in order, but here we go:

Deus Ex. Of all of the games I have ever played, this one has, I think, aged the best. I don't know why, but it doesn't have any of those little things that annoy me about most older games.

Mass Effect series. A cheat, perhaps, but I find it hard to consider these games separate. Each have their own pros and cons, but in the end, I just view them as one long game broken up into three parts, with the differences offering variety.

Knights of the Old Republic II: The Sith Lords. I love the first game, I really do, but this one just blows the first out of the water, which is especially surprising considering it is unfinished.

Bioshock Infinite. It grabbed me and didn't let go. Still hasn't, to be honest. It's just a great game all around.

Thief GOLD/Thief II. Another cheat, but I like both of these games so much I can't really separate them. Funnily enough, after playing all three of the games, I considered Deadly Shadows to be my favorite, but having replayed Thief GOLD on Expert, and getting part of the way through Thief II (I got distracted by another game) on Expert, I've changed my mind. I still like Deadly Shadows a lot, especially in the story department, but gameplay-wise, the first two have an edge.

Dragon Warrior 7
Persona 4
Final Fantasy 7
The Witcher
The Witcher 2.

Fallout
TIE Fighter
Frozen Synapse
Baldur's Gate
Portal

Not much in the way of new games for me, apparently.

New
Fallout 3
Operation Flashpoint
Ace Combat The Unsung War
Civilization V
Battlefield Bad Company 2

Old
Commander Keen
Age of Empires II
Dune 2000
LHX: Attack Chopper
Dyna Blaster

1. Elder Scrolls II: Daggerfall
2. Elder Scrolls IV: Oblivion (with all DLC)
3. Tomb Raider 2 (PC)
4. Metal Gear Solid (PC)
5. Final Fantasy VII (PC)

A very, very difficult choice as my number six game is Deathtrap Dungeon, but I've often swapped that game around with others already in my top 5, but right now, my top 5 is that above.

Arcanum: Of Steamworks and Magick Obscura
Grand Theft Auto: Vice City
Max Payne
Red Faction
Mafia