// about
About Arcanum
Arcanum is the home base for LLM roleplay.
Somewhere along the way, a strange and wonderful thing became true: the most powerful storytelling engines ever built — ChatGPT, Claude, Gemini — were sitting on everyone's desk, and almost nobody was using them to play. The few who tried mostly found the same wall. The magic of the first hour gives way to a model that forgets your name, loses your gold, and quietly stops caring about the world it was building. Most "AI RPGs" are a clever prompt and a prayer.
Arcanum exists because it doesn't have to be that way.
We do three things. We find the best public AI RPGs worth your time and tell you honestly which model they run on and whether they're any good. We review the roleplay platforms — Janitor, Friends & Fables, AI Dungeon and the rest — so you don't have to gamble your evenings finding out which ones deliver. And we build Arcanum Originals: our own packaged game engines, designed from the ground up to solve the problems that break every long AI campaign. Persistent memory that doesn't drift. Worlds that act on their own. Companions with their own lives. Combat that rewards thinking, not dice luck. You download the files, drop them into your AI, and play worlds you won't find anywhere else.
That last part is the heart of it. Our games — Aevum Realm Architect, Eirathis Strider, The Chronicler, Star Freighter Drift — aren't character cards. They're full systems, obsessively engineered, the kind of thing that comes from caring more about how a world holds together over a hundred turns than about shipping something quick. If you've ever wanted an AI RPG with the depth of a real game instead of a chat that loses the plot, that's who we make these for.
Every world we release is free to play. The games run on your own ChatGPT, Claude, or Gemini — nothing to install, no account to make, and the full game in every free download. If something we made gives you a good night at the table, you can support new releases on Ko-fi — or go one further and commission a world built just for you. That's the arrangement: we keep building worlds, you keep playing them.
If you want to talk shop, swap campaign stories, or ask setup questions in real time, join our Discord.
// the founder
Who Builds This
Arcanum was built by Rukka — a lifelong gamer whose experience with roleplaying systems spans every medium the genre has ever taken.
It started with a Nintendo Entertainment System and a library card. The NES brought Dragon Warrior, Final Fantasy, The Legend of Zelda, and Ultima III. The library brought Choose Your Own Adventure, Fighting Fantasy, Lone Wolf, Sorcery!, and The Way of the Tiger. Both arrived at roughly the same time, and the obsession never stopped.
What followed was four decades of systematic immersion in tabletop roleplaying. The systems: Dungeons & Dragons, Advanced D&D, Pathfinder, Call of Cthulhu, Warhammer Fantasy Roleplay, RuneQuest, Traveller, GURPS, Vampire: The Masquerade, Shadowrun, Pendragon, and Rolemaster. The settings studied as carefully as the rules: Forgotten Realms, Greyhawk, Dragonlance, Dark Sun, Ravenloft, Planescape, Glorantha, The Third Imperium.
His computer RPG experience runs from the genre's earliest foundations through every major era: Wizardry, Ultima VII, Baldur's Gate, Planescape: Torment, Neverwinter Nights, Morrowind, Dragon Age: Origins, Mass Effect, The Witcher 3, Kingdom Come: Deliverance, and into the current generation with Baldur's Gate 3, Disco Elysium, Cyberpunk 2077, Pathfinder: Wrath of the Righteous, Warhammer 40,000: Rogue Trader, and Pillars of Eternity I & II. He has spent equal time in persistent online worlds — Ultima Online, EverQuest, Dark Age of Camelot, World of Warcraft, and the text-based MUDs that bridged classical roleplaying and the virtual — and in emergent simulation games where stories grow from systems rather than scripts: RimWorld, Dwarf Fortress, Crusader Kings III, Kenshi, Mount & Blade II.
Long before AI became a storytelling tool, he was studying branching narrative design, procedural adventure generation, and emergent gameplay. When large language models arrived, he recognized immediately both what they could do as game masters and what would break them. The Arcanum Originals are the product of that understanding applied directly: decades of knowing what makes roleplaying systems hold together, brought to a medium that most people are still treating as a chat interface.
The reviews and guides on this site come from the same place. When Arcanum says a game is well-engineered or a platform falls short, that judgment is coming from someone who has spent a lifetime studying how these systems work — and fail. How that judgment gets turned into a number is written down in full on the review methodology page.