The game is childishly cute and the story is kept simple. The sound fits in very well with the game's atmosphere. You jump around, gather stars, stomp funny looking creatures on the head while avoiding falling into lava, water and being crushed (among other things) on your way to the exit.
There are 4 difficulty levels to choose from, ranging from being immortal to 1-shot you're dead. However, loads of checkpoints make dying a minor issue so if you got some experience from this type of games then hardcore's the way to go.
As you progress in story mode you'll unlock extra bonus levels that offer new, unique challenges that'll keep you going once the story's over.
Something I believe to be very important in this type of game are the controls and I'm glad to say that they were excellent. Easy to learn and the little alien do as he's commanded (and yet I somehow managed to drown it in lava more than once).
I wouldn't recommend this to a hardcore gamer who's looking for something difficult to sink his or her teeth into because the game's not that hard. If you're looking for a fun, casual platformer however then it's great!
I would also definitly recommend this to parents who seek a game for their kids but don't like all the blood and gore that's so common in most games today. If your kid is old enough to understand the controls then this is a really good game!
Personally, being of the NES-generation I actually did have a lot of fun with this one and although I'd never give it a 5 I can't see any reason as to not give it a 4 =)
1 - Crap, don't buy
2 - Fun for an evening
3 - It's an alright game but not my taste
4 - Great game
5 - One of the best I've ever played