Counterstrike
Counterstrike
Best of all the animals. Well, FPS games.
Counterstrike is a very popular online first-person-shooter, back in the days of the original Half-Life it was pretty much the biggest online game ever. Now, the new version that came out with Half-Life 2 is called Counterstrike:Source, or CSS or CS:S for short.
Counterstrike Source
This is 5punk's wednesday game. It has pretty much outright replaced the older version, Counterstrike 1.6
It has good graphics, and resonably fast paced, round-based gameplay. Its realistic for an online game, compared to Quake or UT for example. Its is really quite good. If you havent got it, its well worth getting along with Half-Life 2. It uses the Valve Steam distribution system, which when working, makes updates etc very easy. However it also means that playing the game offline is tricky, and playing an unlicenced copy of it online is nigh impossible.
Far better than BEEF2
Depending on who you ask...