That's an epic game choice zeto :O
I love Child of Light. Super Meat Boy is hard but awesome for something to play when you have to wait in the League queue for example.
Also I played
Primordia recently. I just finished it 10 minutes ago, with a total of 6 hours of playing. It's a little ingame-adventure-thing like Machinarium or Samorost, but a lot harder. Plays in an apocalyptic robot world where humans don't exist anymore. The robots see the humans as some kind of "god" who created them. You play a robot called Horatio and his power core got stolen by a laser-shooting evil robot called Scraper. The power core a glowing stone thing who keeps himself and his little friend Crispin alive. A journey begins were you have to travel to the big robot city, Metropol, but you find out that the city is fallen for a virus which pretends to be the leader of the city, called MetroMind. It's pretty hard and takes a lot of thinking, a lot more for someone who isn't perfect in English, like me. The robots really speak robotish with many confusing words, but the voice acting is FUCKING awesome. You'll have several ending opportiunities at the end where you have to make decisions, but I don't want to tell you too much. It's really worth playing it.