1)   NoLimits Rollercoaster Simulation 1.55
NoLimits is the ultimate roller coaster simulation game that lets you experience authentic roller coaster thrills. Focusing on realism and speed, NoLimits lets you ride real existing coasters, or build a roller coaster to your own specifications.

 2)   Roller Coaster Mania 2.0
Turn your desktop into an exciting adventure with this breathtaking screen saver collection of 25 roller coaster photos from around the globe. Sit upright, hold on tight and enjoy the ride!