CAIRN is a mashup of Knave and Into The Odd, meant for Wood Fantasy settings such as Necrotic Gnome's Dolmenwood.
THE POSITRONIC LIBRARY is a simple dungeon for Into The Odd: Electric Bastionland, and other rules-lite OSR games.
THE CLAY SHELF is a setting or adventure site for Into The Odd: Electric Bastionland, set in the Deep Country, far from Bastion.
ONE SHOT WORLD is a hack of Dungeon World that removes most of the long-form mechanics and replaces them with simple rules designed to facilitate one-shots and short campaigns.
THE DUNGEON GAME is a small RPG (or wargame) about building a dungeon, populating it with monsters, then fighting them! I wrote and playtested it with my 4-year old son.