Company Leader is a free print-and-play boardgame about modern combat. The authors write:
Company Leader is a free wargame for 2 to 4 players. It is a company level based game, meaning that players are playing with company sized playing pieces. As a commanding officer you try to win the battlefield by scouting and destroying the enemy and by capturing urban areas.
Junior General offers a set of free wargames rules for refighting the Vietnam War Battle of la Drang.
One Brain Cell Vietnam Rules are a set of free wargames rules for games set in the Vietnam War. They are designed to be a simple, beer-and-pretzels set.
One Man One Gun is a set of free wargames rules for plastic army men.
Agent Decker is a print-and-play card game with a spy / espionage theme. The author writes:
AGENT DECKER is a mission-based deckbuilding game for one player where you’ll acquire gear and skills by facing obstacles. The alarm raises every turn, so you must pick who you take out. Do you go for the cool weapon, or take out the security camera?