Batman games are now on sale for Mac users only and those titles seem to be Steam redeemable which, if I’m not wrong, means you get the Steam PC version as well? Anyway they’re both at 50% off.
Tropico 4 Collector’s Edition is now on sale at 75% off and is redeemable on Steam.
Two Worlds 2 is not redeemable on Steam it seems but it’s still a good game. 70% off of this one.
Alpha Protocol (DRM Free) is on sale at 75% off as well.