I wouldn't think that it would have anything to do with the size of your screen.
Try this:
- From the main menu select 'Fun Things to Do' then 'Cosmic Billiards'
- Turn on the 3D effect and launching new planets or moons into the scene.
- When you fire them they appear right in front of you and will fly away from you.
- Give it a second or two to travel away from you.
- Right click on the new object and click the 'Rev' button (in the Properties group next to velocity). This will reverse the velocity and make it fly straight toward you.
Let me know if that is the effect you're looking for.
