Realm of Chaos has some nice scans of dungeon floor plans from Old School Warhammer publications. I have the original of this set in a stack somewhere. I wish GW had not gone so far astray from the things that made it great in the 1980s and 1990s.
fantasy
Age of Fantasy Regimental Rules
Age of Fantasy: Regiments is a set of free wargames rules for simple fantasy Regimental actions. The rules fit on one page, and there are “army books” for various races.
Fantasy Microcosm Card Game
Fantasy Microcosm is a fantasy themed card game for two to four players that uses tit-for-tat card-combo mechanisms. This DIY game requires making a deck of 60 cards.
Children of Fire Fantasy Role Playing Game
In Children of Fire, players act as Angels (the Children of Fire), interacting with other angels, and with humans (Children of Clay). To create a character, players choose an order and select various options. Action resolution is stat + 2d10 vs difficulty
A number of companies produce angel figures that would work well with this one.
Weapons of Body and Soul Martial Arts RPG
Weapons of Body and Soul is a martial arts RPG currently in playtesting. The author writes:
The focus of the game is on being a Martial Artist in a land of mythology, where demons and beasts reign and humans can manifest the energy of their spirit to defend themselves. While the primary focus of the game is on combat, the end goal is not about gaining loot. It is about mastering your skills and learning to overcome challenges, becoming greater than you were and achieving your goals.
While it is a combat focused game, you are not required to play a fighter. There are rules in place to play other kinds of characters. This includes a diplomat, or a skill specialist such as an engineer, an inventor, or a smith. WBS emphasises three main design goals. 1) Realism and accuracy. 2) Skill focused gameplay, with high skill trumping high attributes. 3) Tactics in combat, including reasons to use weaker attacks, or to fight at less than your full capacity