Miniature war game company ArmChair General just released Conflict on Mars, the latest campaign for its When the Navy Walked Victorian & Edwardian Science-Fiction War Game in an Age of Steam system. Here's the formal description:
WTNW is more than just a Victorian Science Fiction Game. It is a springboard for imagination and a high-level game of tactics and battles set amongst a what if world inspired by the classic authors of Victorian Science Fiction and Retro Science Fiction. In WTNW, players take the reins and command massive armies of men, fantastic beasts and steam-driven vehicles of leviathan proportions. In the end, the thunder that cascades across the battlefield to settle in the souls of the fighting men will only be assuaged with the assistance of the landship.
Download the When the Navy Walked: Conflict on Mars! 6-page sample preview (pdf)!