Space Ranger is available in two versions for Windows 8:
Free Demo Version
The Free Demo version includes 3 demo missions with 2 levels each - no level editor.
The Full Version of Space Ranger includes a lot of premade missions, and of course the powerful level editor, enabling you to create your own cool mission sets!
We expect to release Space Ranger for Windows 7/XP, iOS, Android and the Ouya very soon!