Counter Strike: Source

You seem person who might like mount & blade. You can download full game with level restriction from their web site.

http://www.taleworlds.com/

Anno & Total War series, Sins of Solar Empire, King's Bounty, No One Lives Forever, Chronicles of Ridick, Battlefield

go on a site like IGN, look for the PC review section, classify by score, then note down anything in the 90+ region that is old enough for your comp.... there should be plenty!

and don't forget the orange box ^^

Lemmings. Commander Keen.

You are not a PC gamer until you have played these.

Why haven't anyone said Dragon Age Origins yet? Its a RTS Action game. Sort of.

One suggestion: Learn to pirate games. Thats the number one key to being a great PC gamer. Free gamers for all PC gamers. They know no law. :)

Team Fortress 2 is the king of multiplayer online shooters, don't listen to these counter strike nerds. ;)

As For RTS, Company of Heroes and World in Conflict are especially amazing. World in Conflict is underlooked which is a damn shame cause it has one of the best war stories in videogaming.

Ok so Ages on Empires, Warcraft 3 and I might try Counter Strike source for my FPS selection.

Commander Keen looks interesting. Thanks for all the suggestions dudes.

I know this is like finding a needle in a haystack, but would anyone happen to not play Starcraft anymore and woudl be willing to give up their CD key? I have an extra World of Warcraft one if you want..