Interplanetary, currently on Steam Greenlight, takes the basic concept of the classic Artillery game and expands it to interstellar scale, where players use gravity on a planetary scale to fire at their enemies. The game also will also feature resource management, tech research, and espionage.
The studio has announced that a playable alpha version is now available for download from Steam Greenlight. "The alpha version includes the very basic features of Interplanetary: building structures and firing weapons," warns the developer.
Strategy Informer is hosting the Windows demo. A Mac OS demo is also available.
Gamers can check out the Interplanetary Steam Greenlight page .