Development of the game began in 2012.[1] It was later introduced added as a Indiegogo crowdfunded project in February 2015,[2] being released for Linux, macOS, and Windows in early access on Steam later that year.[3] It was officially released out of early access on September 20, 2018, and will also be released for the PlayStation 4, Nintendo Switch, and Xbox One on July 9, 2020.[3][4]