Astro Robo Sasa is a unique physics-based shooter developed by ASCII for the Famicom in 1985. Players control Sasa, a robot boy who must collect energy capsules while navigating hazardous levels. The game's standout mechanic is its movement system: Sasa can only move using the recoil from his plasma gun. This means every shot counts, as firing not only attacks enemies but also propels Sasa in the opposite direction. Players must carefully manage their limited energy while mastering the recoil physics to clear each stage. Its innovative and challenging gameplay makes Astro Robo Sasa a distinctive title in the early Famicom library.