RE6 is worth it if you're willing to actually learn how to play it
https://steamcommunity.com/sharedfiles/filedetails/?id=136986886 If you're just looking for zombie shooting grab RE4 instead. If you want classic spoopy RE grab REmake instead. If you want something inbetween grab Revelations 2
Shadow Warrior is $7 and probably the best single player FPS of the last few years.
Chivalry is good for $5 if you haven't played it and want to try some melee focused multiplayer combat.
DMC4SE is one of the best games ever made if you like actually learning mechanics. Check out /cgg/
Penumbra games are from the makers of SOMA and Amenisa (machine for pigs is made by a different team) they're not as polished but they're arguably better.
The Evil Within is good if you're very familiar with Shinji Mikami's games as opposed to really liking a couple of them. Make sure you get the DLC episodes too
State of Decay is jank as fuck but really fun.
Typing of the Dead is FUCKING AWESOME 10/10 GOTAY it also has a mode you can use a controller to turn it into an ok on rails shooter.
>>314767368SOMA is good, it's Amensia but better.