Free Actionscript 3 Code

Flint Particle System

Flint is an open-source project to create a versatile particle system in Actionscript 3.

The aim is to create a system that handles the common functionality for all particle systems,

has methods for common particle behaviour, and lets developers extend it easily with their own custom behaviours

without needing to touch the core code.
 

Tetris Game Engine

This tetris engine contains full source code for a tetris game.

As well as being useful for people looking to develop a tetris-like game,

it's also a good starting point for anyone looking to build games in Actionscript 3. Take a look through the code and learn from it.
Get the Tetris game code

Various useful classes

These are a few classes that I've used in a number of projects and that may be useful to you.
Get the classes