Flex引擎

　　游戏引擎
　　1、FFilmation 是一个2.5D游戏引擎，类似暗黑破坏神那种45度的游戏引擎    http://www.ffilmation.org/website/ 
　　2、PushButton Engine 是开源的Flash游戏引擎，提供大量素材。 http://pushbuttonengine.com/
　　3、Yogurt3D Game Engine 是Actionscript 3.0的lib文件，为3D游戏开发设计，有关OpenGL。http://www.yogurt3d.com/
　　4、Flixel 是开源的游戏引擎，用于制作类似GBA游戏的小游戏， http://flixel.org/  Flixel 是简单易学的游戏引擎，可以从它入手学习游戏开发
　　5、Citrus Engine 是一个由Actionscript 3.0 语言和 Box2D物理引擎实现的卷轴类游戏 引擎。http://citrusengine.com/ http://blueflamedev.com/
　　物理引擎  APE (Actionscript Physics Engine) ：APE  is a free AS3 open source 2D physics engine for use in Flash and Flex, released under the MIT License. APE is written and maintained by Alec Cove .   Demo    Source:http://ape.googlecode.com/svn/ WOW-Engine 3D Physics Engine：WOW-Engine 是又一个 开源的 AS3 3D Physics Engine
　　Demo   
　　WOW-Engine ver1 Classes
　　IMPORTANT!!! wow-engine ver1 need AS3 Data Structures For Game Developers for run
　　Away3D ：Away3D is a realtime 3D engine for Flash
　　Demo    Source   
　　Sandy :Sandy  is an intuitive and user-friendly 3D open-source library developed in Actionscript 2.0 and now Actionscript 3.0 for Adobe Flash. 
　　Demo1   Demo2    
　　官方下载 source: On the google code SVN : http://sandy.googlecode.com/svn/trunk/sandy/as3/br anches/3.0.2/ Flade ：Flade (Flash Dynamics Engine) is an open source actionscript 2.0 library for simulating 2D physics using Verlet integration. It currently features rectangular, circular, & wheel primitives, spring & angular constraints, and surfaces composed of line segments, circles, & rectangles. It's designed primarily for games with a goal of speed and ease of use, and is MTASC -strict compatible.  Demo     source