https://www.humblebundle.com/
I've only played FTL. It was a great game. It might seem to be based on just luck, but that's only in the beginning when you suck. It relies more on knowing the probability of events and then basing your decisions on the risk/reward of your actions. There are tons of things you can do to manipulate events in your favor, but first you have to learn the game. It's incredibly replayable.
As for the others offered, I'm interested in most of them. Trine 2 is a physics platformer, which is not something I tend to like because I hate everything that touts physics, as it usually ends up being a frustrating mess more often than not. Mark of the Ninja is a really well drawn stealth game. Not a genre I really like, but it's supposed to be a really good game. Brutal Legend is a Double Fine game. Don't really like them, but the game appears to be a good homage to the music of old. FEZ is a game that I'm very much interested in. A platformer with the ability to shift dimensions. It's highly acclaimed. I'd say let the critics actually influence your decision for this game, as the user reviews for it are mostly concerned with the fact that the creator is as much an ******* as most of the internet. I read books from racists, sexists, and homophobes (they're called authors before the 21st century) so I couldn't give a damn about that kind of thing. Art is art.
