Free This Weekend? Spend It Playing Free Games on Steam

Steam's got a massive free weekend today through 1 pm on Sunday, with 10 free titles to play all weekend long:

Awesomenauts
Blade Symphony
Company of Heroes 2
Don't Starve
Grid 2
Injustice
Killing Floor
Payday 2
Trine 2
XCOM: Enemy Unknown

Shut up and take my m--er, bandwith!