Shock Force Starship Troopers modifies the Shock Force rules by Demonblade for the Starship Troopers film universe.
The Miniature Wargaming Editor
Trireme Ancient Naval Rules
Trireme, from Andy Watkins, is a set of free naval wargames rules. These are of the one-page variety, which means that there is much to recommend them. I also like the staggered movement system based on boat speed, which reminds me of the old Car Wars system.
BloodBowl Hockey Variant
Here’s a variant for Games Workshop’s BloodBowl Game in a hockey format.
Battlestorm Miniatures Combat System
Battlestorm is a set of free wargames rules for medieval fantasy.