But that's not all - you also have to make sure not too many kids are awake at the same time. In the game there is an alarm clock and once 65% of the allowed kids awake is reached it will start to ring, to warn you that there's too many awake. You can control this by zapping the kids with your trusty sleepgun and sending them back to bed. As if that wasn't enough - items will appear in the house and kids will eat most things they come across and the more they eat the more full they will be - and the fuller they are (shown with a bar over their heads) the longer it will take to send zap them back to bed. If the kids are completely full they will stop up and start to cry and only stop after a lot of zapping with your sleepgun. Be aware that crying kids make a lot of noise, so they will count for 1˝ kid and make the alarm go off faster than normal...no time to waste then.
You also have to eat yourself - to keep your stamia up...which is also a good reason to keep the number of kids down, because they'll eat the things you need. Luckily the kids knows what Santa likes the most - milk and cookies, so they won't touch them at all. Those are also the things that'll give you the most energy.
You use the lift in the middle of the house to go from floor to floor. It will run by itself but you also have limited control over it, so if you step into the lift on the middle floor, while the lift is going up, you can press down to take the lift down
instead of going all the way to the top first.
^ Taken from readme.
Developer: Tardis Remakes
Year: 2010
http://tardis.dk/wordpress/?page_id=621