The Ultimate Roller Coaster Simulation it's a fast, fun, and simple diversion everyone will love. Incredibly detailed curved surfaces and gravity physics recreate the experience. With the full version, we have set up an online trading post to allow people to post their favorite roller coasters for everyone else to try. Also, built into the program is the ability to double as a screensaver, to maximize the fun with the seven bundled coasters. You can watch the action from afar, or sit anywhere on the entire train!