The oldest and most influential sci-fi TTRPG of all time meets the world’s most popular roleplaying game, with a complete 5e conversion by World’s Largest RPGs.

The award-winning TTRPG perfect for forging the stories YOU want to play. Lightning-quick character generation. Super easy to GM. Unique and imaginative campaigns. And all the flexibility, story focus, and fast-paced play Cypher is famous for!

The World's Largest Dungeon is a 1,600+ page, four-book behemoth megadungeon. Experience the Guinness World Record-winning dungeon crawl like never before - fully updated to 5E of the Worlds Most Popular Roleplaying Game!