From the back of the book: Your code name is Orion, and you're about to take a trip through time. A mad scientist has gone back in time - carrying a nuclear bomb. As the computer whiz on the ACT (Adventure Connection Team) you must follow him into the past before he destroys the future! You must use your micro to: guide your machine away from a rampaging Tyrannosaurus track a killer play a guessing game against a computer-controlled force field Time Trap is more than a great adventure story. It's danger, action, and suspense - plus computer programs for you to run. This program will run in BASIC on the IBM PC, PC jr, APPLE II+, APPLE //e, COMMODORE 64, VIC 20, TI99/4A, ATARI 400/800, RADIO SHACK TRS80 (Level 2 or greater), RADIO SHACK COLOR COMPUTER. Includes a reference manual with user tips and explanations of the programs!