Call To The Colors is a set of free wargames rules for gaming the American Civil War in 15mm.
The Miniature Wargaming Editor
Two Page Lego Minifigs Rules Set
Consortium Games offers Minifigz, a two page rules set for battles with Lego minifigs, and similar mini people. I’m going to have to give this a try.
Update: The original link is dead. You can still find Minifigz on the Wayback Machine.
Crouching Hero Hidden Daggers
Jim Wallman presents yet another game in Crouching Heroes, Hidden Daggers: A fantasy skirmish based on the more fantastical type of chinese martial arts movie. With characters inspired by the Water Margin. Simple rules, with action cards
World War II Role Playing Game
The World War II RPG by Mikko Kauppinen is designed as a simple game that is deadly to low level characters, but that allows more powerful characters to do very cinematic actions. Characters have three attributes and a number of skills. Action resolution is done by rolling 1d6, subtracting the result from the relevant attribute and adding one. If the result is more than zero, the character has succeeded, and bigger numbers mean greater successes.