AutumnFall is a new ActionScript 3 game development framework for casual games. It is designed to let you build flash games as quickly as possible, offering time saving features and game oriented tools.

The framework currently has the following features:

• Application / Game loading system.
• Extensible window system
• Gui manager that lets you take control over every single UI component (windows, forms, alerts, etc).
• Form system (with form validation)
• Sound handlers / Sound managers
• Asset loading system that supports bulk loading
• Extensible loading screen system fully integrated with the asset loading system
• Game display logic (Layers, Scenes)
• Game objects system
• Component system (As in Unity3d ) that let you control the behavior of your game objects
• Game data and Score system for data persistency.

To come:

• Game libraries
• Collision logic
• Pathfinding system
• Box2d integration
• Language tools

For more info click here.