Game Rulebooks
Open rulebooks for original games, creative mods of published titles, and encyclopaedic coverage of public domain classics. Every rule documented, every variant preserved.
The percentile-skill engine behind Call of Cthulhu, RuneQuest, and Pendragon
A classless OSR adventure game about exploring a dark and mysterious Wood
Powered by the Apocalypse fantasy dungeon-crawling, fiction-first play
A flexible, narrative-first tabletop RPG built on aspects, fate points, and the four actions
A classless OSR rules toolkit for running old-school fantasy adventures
Trick-taking games for the 32-card Skat deck
Match the pips, build the chain, score the ends
Japanese flower cards: 12 monthly suits, 48 cards
A tile-matching game of skill, strategy, and fortune
A minimalist toolkit for old-school-style sandbox adventuring
Paizo's fork of D&D 3.5, the most complete open ruleset in existence
Ancient Egyptian race game (c. 3500 BCE), reconstructed from archaeological evidence
Every game a standard deck of cards can play
Games built on standard six-sided dice
A perilous journey through the Forge, guided by moves and oracle tables
Ancient Chinese chess: cannon fire, palace tactics, and the river divide
Every chess variant, one engine
Hidden-rank warfare — the original family that spawned Stratego
Japan's classic strategy game where captured pieces change sides
Guide your Queen to the centre of a 91-hex board
Officers defend a fortress against a siege of soldiers
Animals battle across rivers and traps to reach the enemy den
Korean stick-throwing race across a circular track
The open core rules for the world's most popular roleplaying game
Connect your two edges across a diamond of hexagons
A perilous quest through the Ironlands, guided by vows and oracle tables
Elizabeth Magie's 1904 economic satire — five variants spanning the game's full history from patent to Prosperity
Race across the star board to claim the opposite point
Cold-war territory control on a hex map with nuclear brinkmanship
King against the horde: asymmetric Norse strategy games of the Viking Age
The national game of Madagascar: capture by approach and withdrawal
The loop-capture game of Java: capture through the corner arcs
Four thousand years of emergent complexity from one rule
The world's oldest family of capture games
Euro-style resource management meets Monopoly
Race your pieces across the board before your opponent
3D exploration and mercenary factions for Twilight Imperium
Flip your opponent's discs to claim the board
A new hex board every game of Talisman
The ancient Indian game of the Mahabharata — three long dice, super-pieces, and split throws
The ancient Indian race game behind Ludo, Sorry!, and Trouble
Five thousand years of race, risk, and probability
The world's most-played family of count-and-capture games
The ancient mill game, played on stone, cloth, and wood across five continents
The oldest known board game: reconstructed from 4,500-year-old clay tablets
Asymmetric fantasy strategy on modular dungeon boards