
What it is about
Ruenhorn Solo RPG: Pre-Kickstarter Beta V2
What if your next campaign was not prepped at all?
What if it was lived, through blood, desperation, and solo play?
Ruenhorn is a kingdom on the edge of ruin, ripe for the taking by anyone bold or foolish enough to seize it. Ancient tombs heavy with treasure, fierce battles beneath shadowed mountains, and hungry sorcery wait for those who chase fortune and glory.
Most solo adventures die the moment you see the map.
You know every room, every corridor, every twist before you get there.
Wonder is spoiled the minute you prep what's ahead.
Ruenhorn Solo RPG fixes that problem. This is a solo first, zero prep, dark fantasy TTRPG where the world is built under your feet as you walk it. You never see the whole dungeon. You never know what is around the next corner. You uncover the story with the same mystery a player feels at the table, and often more. The event system drives a full Villain’s Journey for your character, so plots move, factions scheme, and disasters unfold whether you intervene or not. The world does not wait for you. It lives.
You need only this book, two d10s, and a pencil.
Ruenhorn is a full throttle, 470 page solo mega-campaign with more than 1000 rolls that teach you the Enginotica system as it throws you into the wreckage of a ruined world. You do not read rules first. You just survive.
What Makes Ruenhorn Different?
Zero Prep Roguelike TTRPG, Learn as You Bleed
Open the book, start the solo campaign, and only check rules when you need them. You do not learn dragon riding or mass combat until you meet a dragon or march to war. While the game helps generate the world, it is never predictable. Your choices, tastes, and instincts carry real weight in what takes shape. The creation process is structured and gamified, but the result is still your custom setting, one you will feel proud to author and to run for friends or for yourself for years. Every Ruenhorn world is different. Whether you use only the book or plug in community zines, your setting generates as you play. No prep. No planning. The world appears when you step into it.
No Classes. No Trees. Just You.
There are no classes and no tech trees. You do not level by ticking boxes. You get better at the things you actually do, and only those things. Your abilities grow out of your choices, not a menu.
Spellcraft Without a Cage
Ruenhorn uses pact driven magic that lets you create and master almost any spell you can imagine. You shape range, size, and duration to build your own magic, and the engine slots it cleanly into the world so it stays dangerous, flexible, and balanced.
Two d10s, One Savage Engine
The Enginotica 2d10 system uses Order versus Chaos in a way you have not seen before. One roll resolves success, failure, fallout, and often damage, staying fast and brutal while keeping long campaigns stable and deadly.
Brutal Survival, Three Ways to Break
Ruenhorn tracks Vigor, Grit, and Sanity. The world can grind down your stamina, your body, and your mind. Travel, hunger, exposure, and nightmares all matter. It feels like surviving a hostile world, not just ticking hit points.
Powered by the Villain’s Journey
Forget aimless wandering. The solo campaign is driven by the Enginotica exclusive Villain’s Journey, a three act arc that raises the stakes, reshapes the world, and pulls you toward a climax you will not see coming. You are not just playing a game. You are surviving your own myth.
A New Way to GM a Setting
Ruenhorn is worldbuilding as play. As you crawl, you map dungeons, forge factions, and uncover secrets your future players will die to learn. By the time you finish the solo campaign, you have a sprawling, lived in setting that you know intimately. Your prequel becomes their saga.
Switch to GM mode and run it as a group sandbox, co op campaign, or West Marches style world. Your friends can drop into your solo campaign at any time, and the world persists with 1 player or 30. GMs deserve better than burnout.
Perfect for solo TTRPG fans, forever GMs who are tired of traditional prep, and anyone who likes their fantasy dark, dangerous, and earned.
Pre-Kickstarter Beta V2 Update and Creator Licensing
This is the Pre-Kickstarter Beta V2 release, featuring:
Interactive table of contents and in book links for fast navigation
A new Nightmares section
Full appendices of PACTS with playable tutorials for every school of magic
Numerous quality of life improvements across layout, navigation, and rules clarity
Everyone who buys this version gets all future digital versions of Ruenhorn Solo RPG on DriveThruRPG, including future expansions, even if the price increases later. One purchase, permanent access to future updates.
Huge thanks to everyone who picked up the first beta release. Your support and feedback helped shape this V2 edition.
Ruenhorn also offers easy, creator friendly licensing so you can publish adventure zines, new tiles, factions, and regions in the Ruenhorn world. Build your corner of the Spiral, sell it, and add your voice to a living, ever growing setting.
No prep. No mercy. Just you, the Spiral, and a thousand ways to die.