I really don't know much about this weeks games.

For $1+:
Zeno Clash + OST
Zeno Clash 2 + OST
Killing Floor + OST
Dwarfs!?

For $6+:
Rock of Ages + OST
Rising Storm

I see Killing Floor advertised all the time on Steam and I've been told that the Zeno Clash games aren't that impressive. I already have Rock of Ages via PSN+ and Rising Storm is new to me.