I kept Terminator Salvation. Not sure why...I guess it's just one of those "So bad it's good" kind of games, except it's not good. I dunno, just having it is like a bit of a novelty in and of itself. I can pop it in and say to my friends "Hey, you wanna see a REALLY crappy game?"
I still have Killzone 3 too though, as I do intend to play it again and see if maybe it sucks less on the second playthrough, but I won't be touching multiplayer and I really don;t have the desire to play the Campaign again, so it just sits there.
Usually though, if I don't like it, I get rid of it.
There are some I have that I don't like that I only keep because I know that no matter how much I don't like them, I'm going to want to play them again less than a week after I get rid of them.
The only game I've ever not regretted getting rid of was Naughty Bear. --- I am a dedicated member of the "Walter Sullivan Is Bad-Ass" group!!! I am the true originator of the Cookie Demon theory on the SH2 and 3 boards.
Mafia 2 because I was waiting for a deep discount on dlc but could care less now. State of Emergency because my dog doesn't have a frisbee. oh and WWF Warzone because Ahmed Johnson. Eat a reef and stay punch!
I'd still prefer to finish it, though, so it stays.
Everything else in my collection, I can throw on and have a ball. --- "does the game give you any guidance at some point? How do I f***ing figure s*** out?" - darksydephil, trying to beat the opening of Bayonetta
I have a popular game unopened on my shelf. I've been trying to get rid of it for ages. Nobody wants it, even for free. So I'm keeping it until someone takes it away. --- Every time a masterpiece like Nier comes along, we get 100 boring shooters. Life's unfair. - simonstrane