I got the humble bundle for $8.00 which included Botanicula, Machinarium, Samorost 2, their soundtracks, a movie called Kooky, & a Windowsill vector. You can pick how much to give and how you want to divide the money between the world land trust, the developers, and a tip. Also, you get Steam keys and it runs all platforms. Botanicula is so creative and lovely.
I don't know what genre it can be considered. You click some things and they do helpful stuff, you click others and they do stuff that is interesting but doesn't help you at all, and other things not so much, it's sort of puzzley but not really, and it's really pretty and adorable. I tried to describe it as an atmosphere game.