Super short demo, intended more as a quick 'this is what I'm talking about when I say text-based'
Super short demo, with Travel and 'Sleep' being the only implemented feature.
Also showcases the XML files used for Planets and Locations.
Download, extract - make sure the XML files are in the same folder as the application - and run.
See the enclosed Readme for further instructions, and have a look at the documentation inside the XML files, and start adding your own Planets and Locations.
It does, being written in Java, require a JRE be installed: Java.com
And, as you'll see, the preview image is irrelevant to the game; This game doesn't lend itself to epic screenshots, so I'll just find nice pictures.