Back Track is a video game for the Game Boy Advance where players control Jim Track, the last hope against an alien invasion. Tasked with infiltrating a secret moon base controlled by mutants and robot soldiers, players must combat enemies, rescue unassimilated humans from pods, and ultimately initiate a self-destruct sequence to eliminate the threat and save Earth.
Domingoaniax and his army of mutants and robot soldiers have taken control of the secret moon base. For months these aliens have been abducting humans and assimilating them into an army of droids that can be used to overwhelm Earth. As our last hope, you must help Jim Track infiltrate the moon base and succeed where many others before him have failed. Destroy every alien or assimilated human you encounter, port back as many unassimilated humans from the pods as possible, and then trigger the self-destruct sequence to terminate the moon base and the remaining aliens.