Slargeball is the national sport of Irvania. You can play it on your tabletop for these rules.
fantasy
Battle of Ayrene’s Woods Fantasy Board Game
The Battle of Ayrene’s Woods is a free print-and-play fantasy board game.
Feasting Ravens Dark Age Fantasy Skirmish
Feasting Ravens is a set of free wargames rules for dark ages fantasy skirmishes.
Fantasy Combat Zone
Fantasy Combat Zone pits players against creatures controlled by a dungeon master.
Chronicles Of Blood Solo War Game
Chronicles of Blood is a solo fantasy wargame. The basic game is free, but expansions are $1 each.