Reactor with Box (Atari 2600)

This game comes in original box with game. Game manual is not included.

Your ship is trapped inside the heart of a nuclear reactor - a reactor whose core is rapidly approaching meltdown. Time is running short and you must act quickly. As nuclear particles bombard your craft, you fight to blast them and destroy the reactor's control rods. If you succeed, the core will shrink. But if you don't...