The idea of this game is to push the red ball into the yellow balls and make them disappear, you do this by dropping some objects on the red ball in order to push it in the direction you want. The game shall recognize circles and rectangles and smooth them. If you draw one object on another one they should join together. If you press letter A while hovering with your mouse over an object you’ll create a joint, drawing another object over it allows you to make it rotate.

The ceres editor, still requires a work to be done, but you can play with it already. During a game you can click “Editor”. In this mode you can draw static and dynamic bodies in the same way as before, move and rotate them using the gray circles, switch from auto recognition to polygon drawing and back. You can also use a Joint to pin dynamic element to the background or connect two overlapping bodies together. Once you are ready you press play button check your level.

http://www.privateasteroid.com/blog/