Defender is an intense, classic arcade side-scrolling shooter. Players pilot a powerful combat ship, acting as the planet’s primary protective tank, rapidly flying across a hostile alien landscape.

Your core mission is defense: destroying waves of invading Landers before they can abduct the human astronauts scattered on the surface. Abducted humans mutate into dangerous Mutants, increasing the threat. Utilizing laser fire and smart bombs, players must constantly monitor the radar and master fast horizontal movement to secure the human population against continuous and escalating enemy attacks.