Occult World War II is a two player Warpspawn Card game. You need to make your own cards to play.
PocketMod
Pocket Mod is an online application that lets you create an eight page booklet out of a single piece of paper. It’s intended for making pocket organizers — to do lists and the like — but I think it would be a great format for one-page rules systems.
Tactical Command WWII Micro Armor Rules
Tactical Command is a set of free wargames rules for fast play games using micro armor. Scale is 1″ = 100 yards, and each stand represents a platoon of vehicles, men, or towed guns.
Heroscape Blank Card Maker
One of the joys of Heroscape is that you can use literally any 25mm / 28mm figures. You just have to make up cards for them. This has led to efforts by a large number of people to duplicate the look of Milton Bradley’s double hex unit cards. Here’s one such effort. Its a .tif file in layers that you import into your favorite graphics editor. Be warned, though. It’s a big file at 13.4 megs.