With SOMA being released on September 22nd it looks like Steam want to get you in the Halloween mood early, with a variety of large discounts on some really top games.
Starting with Amnesia: A Machine for Pigs which is currently 80% off making it on $4.
Penumbra Collector Pack has also received a heavy discount of 80% bringing that down to only $2.
These reductions will be available until Friday at 10:00am PST so don’t wait too long as that’s only 3 days away.
Amnesia: The Dark Descent is only free until tomorrow at 10:00 PST so I recommend jumping on that right now via Steam.