Warp Spawn is the brainchild of Lloyd Krassner.

Since 1997, Lloyd (primarily, with some help from others) has been posting free rules for themed board and card games on his site, and his collection now numbers over 1000 games. A great number of them are war games, with themes ranging from pre-history to the future, military, fantasy, comedy, card games, classic game adaptations, hex games, role playing, and anything and everything in between.

Lloyd concentrates on the game play, leaving the art and design to his hordes of admiring fans. Sure, with over 1000 games produced at such a rate, there’s a lot of cruft, but the best games attract the most feedback and tweaks and boil up to the top of the forums.

Best of all, every game is free for non-commercial purposes.

(source, source)