Astro Warrior is a vertical-scrolling shoot 'em up video game developed and published by Sega for the Master System. Released in 1986, players take control of a spaceship, the Astro Flash, fighting through waves of enemies and bosses. The game focuses on arcade-style action and power-ups to enhance the player's firepower. Its simplistic yet challenging gameplay is representative of the genre during the 8-bit era, with a difficulty level that increases as the player progresses.