Counter-Strike: Source, a game that combines the gameplay from the original Counter-Strike with the power of the Source engine, is now available on Steam for Linux with a 75% discount.
Valve has starter porting their games and already released quite a few titles, although most of them are from 10-12 years ago.
Nonetheless, Counter-Strike: Source still has its fans a decade later and the Linux users are just starting to enjoy what Steam for Linux has to offer.
The game can now be acquired on Steam for Linux with a 75% discount, but there are also a few other packs which include this title: Counter-Strike: Source + Garry's Mod, Counter-Strike Complete (Counter-Strike, Counter-Strike: Condition Zero, Counter-Strike: Source, Counter-Strike: Global Offensive), Source Multiplayer Pack, and Valve Complete Pack.
If you are interested in this game, you should check out the Steam website.