Steam has another awesome sale on another great game. For a limited time you can get your hands on Ion Storm's innovative master piece Deus Ex (in addition to its less stellar sequel Invisible War) for the pittance of $5.
Featuring innovative gameplay and a deep, rich narrative Deus Ex is a masterpiece right up there with the likes of Half-Life. There are numerous ways you can play the game and so many distinct paths you can follow to make each playthrough unique and memorable. You'll have to deal with the game's somewhat fussy and antiquated Unreal engine but the experience is well worth the trouble so check it out.