Flixel is an open source game-making library that is completely free for personal or commercial use. Written entirely in Actionscr ipt 3, and designed to be used with free development tools, Flixel is easy to learn, extend and customize.

Actionscr ipt编写的游戏关卡和地图编辑器，功能齐全，常用到的功能点都具备了。-Generic level and tilemap editor for indie game developers!