The game, as featured in more detail over on the Playstation Blog, puts you in the shoes of a crab. Gah - why crabs? We really hate crabs.
The objective of the game is to guide the crab away from falling coconuts in order to collect treasures. Just to make it a little more difficult though, FuturLab's decided that while collecting his own weight in diamonds and avoiding coconuts - the little critter's playing keepie-ups with a colourful beach ball. Multi-tasking!
Suits the Minis ethos perfectly then. Good, silly, pick-up and play fun.