My notification for The Black Masses reads it is discounted till 6 Oct 4:00am AEDT
And Ultimate Epic Battle Simulator is $3.44 (84% off $21.50) - ending time not stated for this one.
The Black Masses is an open world first-person fantasy co-op RPG. The Black Masses features our next generation of crowd rendering technology rebuilt from Ultimate Epic Battle Simulator. Explore a 16 square kilometer island populated by hundreds of thousands of possessed inhabitants.
Recent Reviews: Mixed (13), All Reviews: Mostly Positive (702)
It's an Early Access Game, there's a free demo. Both games are Windows-only.