Hurry! Prey available for $4.95 on Steam this weekend

Steam is practically giving away 3D Realms’ sci-fi first-person shooter Prey for the price of $4.95. The special offer is for this weekend only (March 29-30, 2008), so you don’t have a lot of time at your disposal. Prey is a first-person shooter, for the PC and Xbox 360 and has sold more than 1 million copies across both the platforms since its 2006 release.

The game became available for download on Steam on November 30, 2006, and normally carries a price tag of $19.95…