GrimDark Racing is a set of simple rules for races in the Warhammer 40K universe. Just use models you already have. There’s plenty of violence, of course.
Rules: Games Workshop
Age of Sigmar One Page Rules
The guys at One Page Rules have created a one-page version of Games Workshop’s Age of Sigmar.
One Page Fantasy Battles Third Edition
The third edition of One Page Fantasy Battles has been released. It is intended as a replacement for Warhammer Fantasy Battles.
Genestealer Cult and Space Marine Chapters For 1 Page 40K
One Page 40K is a simplified version of the seminal miniatures wargame. The rules now offes data for Space Marine Chapters and Genestealer Cults.
Coreheim: Mordheim Updated Rulebook
Coreheim is an updated rulebook for the venerable Games Workshop Mordheim system. I liked Mordheim (and its predecessor, Necromunda). I should get them out again to play.