From publisher blurb:
Crown is an easy-to-learn, rules-lite old school fantasy roleplaying game. In a compact sixty pages it contains all the rules you need to set out on perilous adventures, dangerous journeys, and harrowing quests. This is a complete game based off of Whitehack and strongly influenced by games like Maze Rats and Whitebox: Fantastic Medieval Adventure Game. These rules are compatible with other OSR products with only a little conversion. This book contains the first half of the full rulebook and is intended for both the players and the Game Master. The second half, full of tools and advice for the Game Master, can be found in Crown.
Player Rules:
Roll-under d20 rules focused around a character's attribute scores. Three character classes (Fighters, Mages, and Rogues) and one optional class (Clerics). Slot based encumbrance with possible item destruction. Simple but extensive adventuring and combat rules centered around class statistics and character attribute scores. Rules for hiring retainers. Permanent injuries. Morale for monsters and retainers. Magic rules based on unique spells made by the Game Master. Optional rules for backgrounds and nonhuman (demihuman) characters.