Have you wanted to check out Serious Sam HD, yet haven't had the ample supply of greenbacks to pony up? Steam is running a pretty sweet deal right now with a four pack bundle. By slapping down très Benjamins ($60), you can get four copies of the super happy fun time remake of Croteam's classic, essentially a buy-three-get-one deal and solid way to get an early lead in the Great Gift Giver of 2010 competition. Speaking of giving gifts: you'd also be able to give the gift of cooperation and the promise to rescue your friends from headless, screaming men holding bombs running at full speed toward them. If there's a better way to tell someone you care, we really haven't heard of it. [Via Big Download]