Yeah i liked Walking Dead s1 too, also like the tv show (though going a bit off the boil atm). I think you are right in that it's pretty linear, but the game remembers your choices and does link them back in which is pretty nice. not got s2 yet, might wait for a sale again !
Space Hulk was pretty fun I thought, worth a fiver or whatever I paid. Though got a bit samey after a while.
Bioshock Infinite I also completed (+got the DLC, all for ?10 which was a total bargain), very good FPS and pretty as anything. But story wise it really was a bit stupid

Picked up Max Payne 3 also and have Hitman Absolution still to properly try to get into as well !