Air Wars is a set of free wargames rules for air combat in the Vietnam War era.
Flying Razorbacks is a set of free wargames rules for jet combat in the modern age.
Don offers an updated version of his air combat rules, which he now calls Aerial Craps.
Air War Vietnam is a set of free wargames rules for simple air to air combat in Vietnam. The authors says Air War-Vietnam is highly suitable for group play and can be learned quickly, with only a few pages of rules. The rules include all markers and templates needed to play the game.