Saboteur is a game that was developed for the Atari 2600 but was never released. (A modified version of this game was intended to carry the license of the TV series The A-Team.) It does appear as one of the selectable games on the Atari Flashback 2 system.
You are Hotot, a cybernetic life form from a serene planet in a distant galaxy. Unfortunately, even in a galaxy far far away not everything is as peaceful as it first seems, for Hotot has discovered an alien missile base hidden on his planet. Manned by strange blue aliens, these evil intruders are using your planet as a launching site for their deadly warhead which is posed to destroy the galaxy's power source. With the help of the birdlike Gorfons, you must destroy the warhead, and prevent the destruction of the galaxy! Good luck Hotot. You are the Saboteur.
On the first screen, Hotot goes from platform to platform dealing with robots and Yar drones, trying to keep the warhead the aliens intend to launch from reaching full launch stage. The Gorfons are the only allies Hotot has that can help him in that task. On the second screen, Hotot must disarm the warhead by banking shots off the security robot to penetrate the conveyor belt's shielding and destroy the warhead pieces. If he's unsuccessful in disarming the warhead, he goes to another screen where he will attempt to destroy it as it launches, but don't expect it to be easy because the warhead comes with an advanced defensive matrix that will attempt to hold off Hotot at all costs.