Additional Details ------------------------------ Product description: Way Cool! A gigantic meteoroid is speeding toward earth! Only you and Bill Nye can Stop the Rock! But hurry...The clock is ticking! Perform fantastic experiments beside Bill! Take the pulse of an earthquake. Revive a pile of prehistoric bones. Boil water with nothing but air. This is real science made really fun, everytime you come inside! Requires Mac OS 7.1, Windows 3.1 or 95, 2X CD Drive, 256 Color Display, 8MB RAM, IBM 486-66Mhz or Mac PowerPC 68040 Processor.