This tutorial covers the basics of creating a side-scroller game in Flash using ActionScript 3.0. The side-scroller created in this tutorial is a bare minimum and does not implement advanced concepts such as optimizing collision detection and instantiating stage assets based on external data files.
This is a very basic introduction to programming games in Flash CS3 or CS4 using Actionscript 3.0. Though the final product isn't all that impressive, many essential concepts are covered throughout the tutorial.