Valve has revealed
Steam's Weekend Deal, slashing 75% off of Counter-Strike: Source, putting the title at only $5 through Sunday.
The game is revolutionary in that it's where many PC gamers first developed their realistic shooter chops and is right now one of the most played multiplayer titles.
The Source version of the title originally debuted back in 2004, while the retail version of the original game came all the way back in 2000.