I bought Portal from a sale last week to throw myself back to...whatever year that came out. I mean, it was $4. No losses there.
And I wasn't going to do anything else, but then there was this stupid summer sale.
And I thought five games for 20 bucks was a good deal.
Bioshock 1, 2, + Infinite
Dishonored (on recommendation from my brother)
And a fun looking one called Don't Starve.
Actually, that almost doubled my library. I'm usually very diligent about buying a game and finishing it before getting another.
I wanted to get the Witcher 3, but I had started a game on someone else's PlayStation, so I'll just bide my time until I can plug into another.
EDIT: haha, I also bought Limbo last week. Forgot about that one. I'm being bad. >.>