Beyond The Gates of Antares Quick Start Rules

Warlord Games offers a set of free quick start rules for their science fiction small unit game, Beyond the Gates of Antares.

Cybercity Blues RPG

Cybercity Blues is a free RPG that has a lighter take on the cyberpunk genre. The authors write:

“Cyberblues is a bit like Cyberpunk, only more mellow.”

Cyberblues City is a near-future, action-adventure roleplaying game. Fast-playing and often funny, it offers a lighter take on the cyberpunk genre, both in terms of system and tone. Cyberblues City uses a much modified version of the Fudge roleplaying system designed to make it easy on GMs. And best of all, it is absolutely free.

Death Squads 41st Millennium Rules

Death Squads is a set of rules for small scale skirmish conflicts in the 41st Millennium.

Exoshift Science Fiction Rules

Exoshift is a set of free wargames rules for mass battle science fiction games.