Mausritter

"Mausritter is a rules-light fantasy RPG where you play as mouse adventurers, with fast character creation, a physical card-based inventory system, and a dangerous magic system. It is built on the chassis of Into the Odd, with new rules for setting, character generation, magical artifacts, and mouse-scale adventures. The game includes a ready-to-play adventure site and a toolbox of resources for the Game Master."