Astroneer is a sandbox adventure game developed by System Era Softworks. Released in December 2016 in early access and with an official release in February 2019, players explore the frontiers of outer space, colonize planets, and survive in a procedurally generated universe. With its emphasis on resource gathering, crafting, and terrain deformation, the game allows for both single and multiplayer experiences. Its open-world features a variety of planets with unique challenges and environments.