The game is now in Early Access and available for purchase on Steam.
Main features, not in the demo, is the new load/save function. More info in - update notes.
Note: our current pricing is to encourage those people who want to be part of the early access process and help shape Deep Space Outpost. There is always the demo to keep track of where we are in development (demo will get updated alongside our EA build), and updates in news and discussions.