Celestial is an open-world space survival game playing on a spherical planet. It's the year 2542 and you play in the role of an Astronaut who is tasked with testing the first Warp drive created by Humankind, but after a chain of events, you end up getting sucked into a black hole and teleported to an unknown part of the universe. Now it is up to you to survive against various roaming alien creaturs, encounter a dangerous environment with sand storms, hurling tornados, and radioactive clouds.