Bowling

Here the reactor was used to create a bowling animation. The pins, ball and alley were added to the the rigid body collection and the mass were adjusted for the separate items. Autokey was used to move the bowling ball forward so that it had some forward force and spin was added to the ball.
Then when the reactor was previewed the ball fell onto the alley and rolled into the pins knocking them down. Adjusting the collision tolerance stopped the pins from falling partly into the floor.

Below is the animation from two different angle, some basic materials were added the scene so that it wasn't just plain grey.