Digital distributor GOG.com has a promotion running for the next week that let's users choose five games out of a total 25 applicable titles for an 80-percent discount. Unless you're some sort of game-playing machine (hi Chris!), it shouldn't be too difficult to find five decent ones.
Some of the titles that interest me, personally, and may speak to you as well are: Primordia, Evoland, Miasmata, Waking Mars, Anodyne, DYAD, and Amnesia: The Dark Descent. With A Machine for Pigs about to release, it's not too late to play that last one -- though I don't know if you'll come out of marathoning it the same person. Amnesia might break you.