Dragonraid is an RPG that was created in the 1980s as a “Christian” alternative to Dungeons and Dragons. According to this article on Uproxx, it encourages a refreshingly different style of RPG play.
fantasy
Frostgrave Spell Cards
For the recently released Frostgrave rules, here are a set of print-and-play spell cards.
Warthrone Fantasy Battles Rules
Warthrone is a set of free wargames rules for fighting fantasy battles. You may find it an acceptable (or superior) replacement for Warhammer Fantasy Battles.
Age of Sigmar Free Rules and Warscrolls
In a pretty interesting turn of events, Games Workshop now offers the rules and army lists for its fantasy miniatures game for free.
I actually see this as the final death throes of the game.
Kensei Samurai Rules
Kensi is a set of free wargames rules for samurai warfare ranging from skirmishes to large battles. The rules include a fantasy element, and the world is a not-quite-historical Japan.