A Whiff of Christmas

It will be up to you to help Father Christmas to get rid of the evil green elves, so as to be able to deliver the presents. The elves want to rob the presents and once the have managed, to kill Santa Claus. To avoid it you will have to use the cursor keys to jump on top of them and squash them, because if you don't do it they will follow you. Remember to gather the plants, because if you don't your reindeers will run out of energy.