Reactor for the Atari 2600 is an arcade-style action game that challenges players to deftly navigate a series of nuclear reactors. The objective is to use a particle to trigger the reactors' control rods and cause chain reactions, while avoiding dangerous enemies and the reactor walls. Failure to manage the reactor's core results in meltdown! The game combines elements of skill, strategy, and quick reflexes, making it akin to a puzzle-action hybrid. Players must think fast and maneuver faster to survive the increasing difficulty and to rack up high scores in this test of atomic-scale agility.