Little Inferno is developed by the same people who brought you World of Goo, and to be honest it's not quite as good. There's nothing especially bad about it, though the gameplay does get a little monotonous - burning things only stays fun for so long. There are several quite spectacular things about it, however. The story, delivered in bits and pieces through the post, outlines a dark and concerning backstory for the seemingly unassuming world (hinted at in the trailer). There seems to be some allegory going on as well, though I haven't managed to nail down quite what it stands for yet. It's a rather pretty game, as well, the graphics are very polished and in the WoG style.
I can't go into too much detail about it without revealing spoilers, but the ending will make the 2-3 hours of burning things more or less worth it.
My advice, do pick up the game at some point just for the experience, but maybe wait till it's on sale and not $15.

