Cute little puzzle/platform game where you play as Nemo, a fish that must escape the levels. Initially quite easy, it really ramps up the difficulty, always take some time out to work out your plan.
Remember that you can blow up enemies and obstacles by letting things "drop" and by throwing or pushing boulders. Don't rush into the puzzles, take a good look at how things are established, there isn't much room for error, make one mistake and you'll have to restart the level.