This is a game I wrote 10 years ago called Sint '99, and now ported to Flash.
Platform game about Sinterklaas (Saint Nicholas), collect the presents and cookies in each level and deliver them to the right chimneys before dawn.
Each chimney is marked with a number (number of gingerbread cookies needed) and a color (color of the present). Sinterklaas can carry lots of presents behind him, but he can only drop the first one into a chimney.
Sinterklaas must deliver all the presents and cookies before dawn. If he also collects all remaining cookies, there will be a bonus level.
Sinterklaas' quest over the roofs is very dangerous: the old man will not survive a high fall. Don't touch the sharp TV antennas and be careful for the mean birds, they will try to steal the cookies and presents. But it's not like a saint to kill birds, so leave them alive.
Also, there are chocolate letters, collect the letters S, I, N and T for an extra life.