The latest version of the Alpha Demo now has an auto updater included!
The Download contains an installer which should care for everything. The Demo should update itself over startup, so be sure to stay informed about new version by subscribing here or at the official website (RSS/Newsletter)
The Demo is limited so you cannot load/save and you cannot build ships/missiles/satellites.
Let me know if you experience any problems or if you have feedback for me. Don't forget to vote at greenlight as well!
If you have any prior demo version installed, please uninstall it first - sind v0.1.3 the version will update itself without needing to reinstall the demo.