So i'm mostly done now since i spent around 50$ and planned to not spend more than 60.
I might buy Dear Esther and Braid if i can get them for around 3$. I'll probably buy Trine too since they are making an Enhanced edition of it using the same engine as Trine 2.
My impression of the games i bought so far.
Don't starve : Great game but not really my cup of tea. I'll test some addons when i'll have some time to see if i can make the game a little it more forgiving.
Guacamelee : Really fun game so far.
Gunpoint : Fun but more of a time killer than a game i will play when i want to play games.
Magicka : Did not play enough but looks cool albeit outdated a little bit. The style reminds me of Little Big Adventure which is not a bad thing at all.
Risk of rain : Addictive. Really fun rogue shooter. I wish the gfx would be a little bit more detailed ...
Spelunky : I expected more considering all the praise. Good game but not close to Rogue Legacy greatness so far.
Super Meat Boy : See Gunpoint.
The Swapper : AWESOME.
Tiny and Big : Better than i expected. A fun little game.
To the moon : Looks good but the control sucks. No controller support i'll setup Xpadder when i'll have the time.
I also bought Amnesia, Anno 2070 and Kingdoms of Amalur but i have yet to try those.