The Steam deal this weekend is a good one for co-op fans.  Call of Duty World at War is on sale for 50% off the regular price, and will just set you back $24.99 until May 18th.  Adding to the value, the first map pack is included, featuring the co-op zombie slaying mode "Verruckt". 

If you haven't got this title yet, and you're a PC co-op fan, it may be quite a while before you see a deal this good.  Don't forget to join the Co-Optimus group on Steam, either.  Snap to it, soldier!

Read The Full Article: Call of Duty World at War 50% On Steam This Weekend

I already own it for 360, but this is very tempting...

This would tempt me but I'm trying to refrain from succumbing to the steam sales and buying less games (and getting used ones more through goozex).