Draw a path from the red ball to the yellow star, in this second version of the game. When it's ready, throw it from the start to the end, and free the way while the ball advances. This version includes new elements of a very easy to interpret function, like keys and padlocks.
Click and drag objects on the way, then click and drag from the red to the yellow ball to draw a blue path. When you're ready, space bar for the ball to follow the path you marked. You can also move the obstacles as the ball advances.