Battleground Hostile Intentions Board Game

Battleground Hostile Intentions is a free board game for two players. The author writes:

It is the near future. A rebel coup has destabilized a small corner of the world, and border nations are moving in to grab whatever territory they can.

You command the forces of one of those nations. You have established a command center in a section of the country, but you face rivals for control of the area. Now you must build up your command center by erecting defenses and constructing facilities that train soldiers, manufacture weapons, tanks, aircraft and other vehicles.

Achieve victory by destroying your opponents’ command centers or capturing and holding critical objectives located throughout the area.

Company Leader Boardgame

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.

Car Wars Classic Free Rules

Steve Jackson Games has made the rules for the Classic Car Wars game free for the downloading.

I played the heck out of that game back in the day.

Two Flags One Nation Board Game Rules

Two Flags One Nation are a set of rules for do-it-yourself American Civil War board games. The author explains how he generates maps and block pieces with his computer.

Elementum Dueling Mages Card Game

Elementum is a free print-and-play card game ..

 of two mages casting elements on each other to win a duel. You and your opponent keep a hand of 5 elements and a Kill card, and each turn you choose 3 of these cards to play into 2 offensive and 1 defensive slot. Each of you keeps track of your active elements using a simple map of interactions and nullifications.

Your goal is to defeat the other mage by resolving a kill card while your opponent has at least 1 active interaction on them or by activating all 5 of their elements at once.