Here’s a one-page set of free wargames rules for the Chechen Conflict, with figures based on on stands.
Chris Kemp has a mini campaign for his Not Quite Mechanized rules.
Stoelzel’s Models offers a free paper model of a derelict commercial building.
Here’s a set of rules for American style football games.
The Osprey Rules A Fistful of Kung Fu don’t include pursuit rules for vehicles, so Pijlie wrote his own.