Astroneer is a sandbox adventure game developed by System Era Softworks. An early access version of the game was released on December 16, 2016, and a 1.0 version of the game was released on February 6, 2019. The player is tasked with colonizing planets, creating structures, and mining resources. Astroneer has no set goal or storyline, though each planet holds challenges for players to complete.

On December 16, 2016, Astroneer was given an early access release, which was expected to last a year or two, according to the developer. The post-alpha, full game release date was February 6, 2019. Currently, the game can be purchased and downloaded through Steam with an original soundtrack for an added price.