It'll be Christmas soon, and Santa Clause has a problem: the presents have been destroyed and the pieces are scattered all over the North Pole. There isn't a lot of time to find and re-assemble them. Well, the latter part will at least happen automatically if the player (in the shoes of said mythological creature) manages the former.
In practice, this takes the form of Boulder Dash. In sixteen levels, you collect toy pieces while avoiding avalanches (~boulders), different types of animals (polar bears and ferocious killer penguins) roaming around the already cleared space and the occasional underground spring which have the nasty habit of slowly flooding the tunnels. The latter make for an interesting challenge, as their threat potential can be calculated while nevertheless staying dangerous. The animals simply behave too eratically to really be fun.