Sector 781 is a Metroidvania platformer game. This game combines elements of the gaming classics Metroid and Castlevania: Symphony of the Night. There are 3 realms to explore, and each realm is made up of 25 interconnected rooms filled with monsters, traps, and treasures. The final room of each realm contains a final boss you must defeat before you can proceed to the next stage. Guide the astronaut through the rooms and search for the 6 power-boosters that function as permanent upgrades. Extra high jumps, bombs and special weapons will allow the hero to break through to new sections of each realm.