IndieGames.com: "I don't think my brain has hurt this much in a while. Doooors is a platforming puzzler by Hempuli aka Arvi Teikari, in which you need to reach the crystal in each level. This involves picking up doors, throwing them into useful spots, then going through them.
The first couple of levels are nice and tame to let you understand what's going on, then the difficulty levels are cranked right up. The number of times that I thought I was on the verge of working a level out, then was shot down a second later, is really quite embarrassing. It's really challenging stuff, although I do wish the controls were a little less awkward - I found myself jumping to my death rather than picking up something plenty of times."