Here is, without any warranties, a much more complex example game than those you find in the Flash Combo Package.
The game is a multiplayer asteroids game and can be tried here [Broken]
The code can be downloaded at [Broken]
Edit:
Just realized that maintaining this game via a zip file on my website will get tiresome fast.
Therefore there is now a google code repository for just this game.
Get it here: https://code.google.com/p/multiplayer-asteroids/