"Not too long ago, Zoombinis enjoyed the good life. Though they all looked slightly different--different eyes, noses, hair, feet--such differences meant nothing to the Zoombinis. And so they lived happily on Zoombini Isle, making small, useful products, which were prized the world over." So begins an unsuspectingly addictive CD-ROM, featuring uncommonly fun reasoning games that require serious problem solving and math-thinking work. Yet the perils that face this cheerful society are not as fearsome as the amount of time you'll potentially spend on this pursuit. Beware the chubby, chattering Zoombinis if you don't want to get hooked to your computer for at least 90 minutes a session!