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"This simulator is designed for people who want to design their own thrilling coaster and educators who want to use a cool activity to simulate the application of physics by using an exciting interactive tool and access to a wonderful reference source."

Good science game where player must construct a roller coaster with just the right forces to make it fun and safe.

A GREAT EXAMPLE OF HOW WEB2.0 LETS US BE PRODUCERS AND NOT JUST CONSUMERS. Audiolife not only lets you create an online store to sell CDs and digital downloads, but it will actually manufacture the CDs for you, on-demand, as customers buy them. The up-front cost? Nothing. Zero dollars and zero cents. On-demand CD creation from Audiolife. (Credit: Audiolife) This is a big deal. As any self-financed musician knows, CD manufacturing is a big investment. Print runs for CDs with a jewel case and nice color insert generally start at 1,000 for close to $1,000, though you can get away with spending a few hundred bucks for a short run, if you're willing to pay quite a bit more per disc. This is all well and good, if you sell all of the CDs you print. If not, you're left with some expensive drink coasters.