You're Santa and you have to collect the presents that have been dropped.
To slide over to the different blocks left click the highlighted blocks.
Watch out for ice blocks, they will break if you stand on them.
To remove ice blocks and snowmen right click the block to make it fall.
The snowmen will shoot snowballs at the block you're standing on so you better move quick.

I'm pretty happy with the outcome, I wish I could have added more but I didn't start till later.
There are probably a couple of bugs, like being able to move to blocks with snowmen. Also there is no sound other than the background loop, I completely forgot about it until the last few minutes.