Here's a simple "game" highlighting various usages of objects.
Randomly generated robots move across the screen, run into arrows that change their direction and despawn when they cross the end of the screen, potentially giving a point if at the preset goal.
There is some odd behavior with the arrows and robots collision not being perfectly aligned, but they should be able to come into contact with most of the arrows on any route.
Click the arrow to change the direction, although each arrow can only be clicked a finite amount of times.