I only buy games when they are at least 75% off and at most $10 in my currency... I didn't buy any games for like 2 years or so, but early this month I bought Frostpunk, SiN, Red Faction, Mars: War Logs, and The Technomancer and already beat them, so I got these today (not feeling like playing anything that requires too much attention).
I have played Aliens vs Predator, Dredd vs Death, and FEAR before though.