Junon.io is a multiplayer base-building game set in outer space. As a player, you are stranded in the Asteroid Belt Junon, and your goal is to rebuild a colony and defend it against the evil "Empire", who will occasionally send troops to raid your base. Survival elements include having to observe health, oxygen, stamina, and hunger. There is also a sandbox mode with no raids, and you can access commands, for roleplay, base building, or many other uses.