Recently started working on a space sandbox game called Diggerly. You will be able to build space stations/settlements and attack other players. Currently, only a very basic single player tech demo is available and it does not work on mobile devices. I release updates usually everyday and mining is up next. Multiplayer and space travel will be available in the next few days. Still have lots of bug fixes, optimizations, and designing to do.
Controls are arrow keys/wasd and space bar to jump. The m key can be used to zoom out and show the whole planet.
A playable demo is available here: http://diggerly.bcdemons.com/play/game.php