From Warspawn Games: Celtic Skirmish, a combination miniatures / board game.
Miniatures Rules
Medieval Castle Siege Rules
Junior General has a simple set of Medieval Castle siege rules. The site also has links to appropriate paper figures, castle models and siege equipment.
One Page Little Wars
From the One Page Rules guys comes a game based on HG Wells’ seminal Little Wars: One Page Little Wars
Modern – Futuristic Cargo Container Paper Models
Marcos at Topsolitario offers a set of free paper models of cargo containers for your modern and futuristic miniatures games. They are quite lovely. There’s even a video showing how to build them.
Orion’s Gate Space Battles Game
Orion’s Gate is a one-page space battles game.