Here are a set of rules for recreating the 1963 battle of Camerone between the French Foregin Legion and the Mexican Army.
Miniatures Rules
The Mexican Adventure
Howard Whitehouse offers a set of Mexican Adventure Rules for the Legionnaires last stand at Camerone.
Kraken: Victorian Man Against Sea Monster
Matthew Hartley has a game called Kraken, inspired by the man against sea monster scene in Jules Verne’s 20,000 Leagues Beneath the Sea
Black Death City Skirmish Rules
Black Death City is basically what Games Workshop should have done to update Mordheim, if it had the sense to update Mordheim. Even better, this free game has been developed by Sam Pearson, a former game developer at Games Workshop.
Event Horizon Starship Combat Rules
Event Horizon is a set of free wargames rules for quick play starship combat. It is played on a grid board.