Exo One, Kickstarted back in 2017, resurfaced with a gameplay trailer and a demo at the Steam Summer Games Festival. If you've missed the demo or simply feel like having a relaxing time flying a disc-shaped spaceship around, you can now do so with the free prologue, available on Steam from today. Exo One is set to release sometime before the end of 2020. If you want to stare at it some more, there are plenty of striking screenshots on the Steam page.