Amnesia is in Steam
Those are in steam too.
I can suggest some underrated non-steam games
(RPG)The Elder Scrolls 1-3, (Obivion and Skyrim are in steam)
(RPG)The old Harry Potter games I think
(FPS)Far Cry 1 and 2
Enjoy
Yep, I am quite addicted to that game which is crazy since I was never a huge racing fan. Goes to show how awesome it is. Been playing a ton of Nirburgring.