You are Santa Claus! You have to take christmas presents as much as possible to kind kids! But you must not drop presents to chimneys, where is coming smoke from there... And watch out for evil elves, who are going to spoil the christmas. Can you get over 2500 points?
To legendkpr: I didn't submit this, because I will make a much better and longer game for the compo...
To AndyUK: Of course you can fit more than one present per chimney. Then you'll get bigger score! And children will be happy.