Dark Metal: Mercenaries in the Deep

A Sci-Fi Adventure RPG featuring Tabletop Tactical Combat and Solo Play set in the Walking Steel universe

From the introduction:

Dark Metal is a solo or cooperative open miniatures sci fi adventure tabletop tactics game about a group of mercenaries stuck in a star system isolated from the rest of the settled galaxy. The game is primarily narrative driven through a series of campaign books as you fight your way through your problems while trying not to annoy the Captain. No GM is required to enjoy the game.

User summary:

Dark Metal: Mercenaries in the Deep is a lightly adapted miniatures game (see Dark Metal) allowing the addition of roleplaying and narrative arcs suitable for solitaire play.