Conceived as a sequel to Missile Command, Liberator flipped the concept to put players in charge of a squadron of space fighters assigned to protect the denizens of a series of planets from the occupying Malaglon Army. From the planet’s surface, the enemy launches missiles that arc toward your ships much like the missiles in Missile Command, and you destroy them (and the bases they launch from, and other flying enemies) in much the same way. You can activate temporary shields around your ships, and you lose when all four ships are destroyed. The centerpiece of the visuals is a rotating planet that must have looked cool in 1982. Liberator struggled to find an audience, even with the help of the tie-in Atari Force comic book series from DC Comics, and ultimately faded into obscurity (but you can play it right now).