Rusher is a component based game engine. It was created by the developer of Stardust particle system. Some of its features:

• Dependency injection with SwiftSuspenders.
• Component-based.
• Extensible engine systems.
• State machine system.
• Keyboard/Mouse systems.
• Command system.
• Built-in camera-layer-based 2D rendering system (you can of course build your own).
• Integration with Box2D Physics Engine.
• Integration with Starling Framework.
• Integration with GreenSock Tweening Platform.

Sample

class Mover
{
    [Inject]
    public var keyboard:Keyboard;

    [Inject]
    public var position:Position;

    [Inject]
    public var clock:Clock;

    [PostConstruct]
    public function listenToClock():void
    {
        clock.add(listener);
    }

    private function listener(dt:Number):void
    {
        var dx:Number = 0;
        var dy:Number = 0;

        if (keyboard.isDown(Key.LEFT))  dx -= 10;
        if (keyboard.isDown(Key.RIGHT)) dx += 10;
        if (keybaord.isDown(Key.UP))    dy -= 10;
        if (keyboard.isDown(Key.DOWN))  dy += 10;

        position.x += dx;
        position.y += dy;
    }
}