The AI RPG Directory (2026): Every LLM RPG Game & Platform for ChatGPT, Claude, Gemini & Grok
If you search “AI RPG” in 2026, you find the same thing on every page: a platform selling you its own product while pretending to give you a guide. Jenova wants you to subscribe to Roleplay Game Master. HowWorks wants your click. Wanderfolk put themselves first on their own list. AI Dungeon reviewed AI Dungeon.
Arcanum has no product to sell you and no subscription to push. This is an AI RPG directory — a curated, independent hub for discovering AI roleplaying games and platforms, whether you searched for that or for “AI storytelling games” — and the only one dedicated specifically to LLM-native roleplay games that run inside the AI you already use. No install. No new subscription. No separate platform. Just games engineered to run inside ChatGPT, Claude, and Gemini, reviewed and rated by someone who has spent four decades studying how roleplaying systems work and the last several years engineering LLM games specifically.
That is the only lens this directory uses. Does it hold together? Does it respect your agency? Does it solve the problems that kill most AI campaigns? Does it give you a game worth playing — or just a prompt that breaks down after twenty turns?
What Is an LLM RPG Game?
Before the directory, a necessary distinction that most content in this space blurs deliberately.
LLM-native RPG games are designed to run directly inside a large language model interface — a Custom GPT inside ChatGPT, a Project inside Claude, a Gem inside Gemini. They require no separate platform, no additional subscription, and no install. The game engine is a master prompt, sometimes paired with a knowledge file. You bring the AI you already use; the game runs inside it.
AI RPG platforms are standalone products — Friends & Fables, AI Dungeon, Jenova, Voyage, Janitor AI. They require their own accounts, their own subscriptions, and their own interfaces. The AI is built in; you bring nothing but yourself.
Both are valid. They serve different needs. This directory covers the first category exclusively: games you can download for free today and play inside ChatGPT, Claude, or Gemini without paying anything extra.
For the platform category, Arcanum maintains separate, honest reviews at /clients/.
How Arcanum Evaluates LLM RPG Games
Every game in this directory is assessed against the same criteria. These are not arbitrary — they reflect the actual failure modes of LLM campaigns, developed over years of engineering games for this specific medium.
Memory architecture. How does the game handle context window limits? Does it have compression systems, save-state protocols, or structured player logs built into its design? A game with no answer to the turn-50 amnesia problem is not a long-campaign game, whatever it claims.
Player agency protocol. Does the game genuinely protect the player’s right to decide? The most common failure in LLM games is narration drift — the AI begins making decisions for the player, inventing their dialogue, fast-forwarding through scenes the player should be playing. Well-engineered games build explicit, hard-walled agency protection into their prompt architecture.
World and mechanical depth. Does the game have genuine systems — economy, faction reputation, relationship dynamics, tactical resolution — or is it a thin aesthetic wrapper over a generic roleplay prompt? Depth is what makes a game replayable rather than exhaustible.
Deterministic or probabilistic resolution. Does the game lean on dice rolls and random chance, or does it resolve outcomes through the quality of the player’s preparation and decisions? The best LLM games reward intelligence, not luck.
Signature design. What does this game do that nothing else does? A game without a distinctive mechanical identity is indistinguishable from a bare prompt.
Longevity. Is this a one-session experience or a campaign engine? Can the player run it for fifty hours and still be discovering new things?
Ratings are out of 5. No game in this directory receives a rating for features it claims but does not deliver.
The Arcanum Originals
These are Arcanum’s own engineered game engines — the benchmark against which everything else in this directory is measured. All are free to download.
Aevum Realm Architect
Model: ChatGPT (Custom GPT), Claude (Project), Gemini (Gem) Genre: Medieval kingdom-builder Best for: Players who want a full social simulation with real consequences for birth, class, and political position
The flagship. A serf-to-monarch campaign set across a world of distinct factions — Al’thoria’s rigid feudal hierarchy, the Shattered Republic’s hunger for citizenship, Njordheim’s merit-based northern culture, the Al-Jamil’s social warmth — each one a different game to inhabit. The Deference Engine enforces medieval social hierarchy mechanically: you cannot speak to a lord as an equal, take a lover across class lines without consequence, or accumulate wealth without risk of dispossession. This is not flavour. It is the architecture that gives the game its arc — because achievement only means something when it is earned from a position of genuine subordination.
Every playthrough generates different opportunities. One run leads through a discovered bandit cache and a flight across faction borders. Another through peasant revolt. Another through a political marriage to a rival family’s heir. The game tracks all of it: economy, territory, military, diplomacy, spycraft, and a relationship system where romance has political weight. A kingdom-builder that actually asks what it cost you to get to the throne.
The companion of Aevum is The Aevum Realm Atlas — approximately 30,000 words of world canon covering every faction, the Deference Engine’s rules, the economy tags, and the diplomatic map.
Download Aevum Realm Architect → | Full Review →
The Chronicler
Model: Claude (Project) or ChatGPT (Custom GPT) Genre: World-agnostic relationship engine Best for: Players who want relationships that behave like relationships — not affection meters, not loyalty thresholds, not unlockable scenes
The most philosophically distinct game in this directory. The Chronicler is not a setting — it is a relationship system you bring to any setting you choose. Medieval fantasy. Cyberpunk. Zombie apocalypse. Cozy village. Pirate voyage. Whatever world you want to inhabit, The Chronicler runs underneath it, ensuring that the companions in that world behave with genuine emotional intelligence rather than gamified reward logic.
The design principle: if a relationship can be measured, it is already broken. There are no affection meters, no friendship points, no unlock conditions. Companions track trust, loyalty, and attachment through hidden state that surfaces only in behaviour. A companion who has been wronged withdraws. A companion whose trauma has been touched goes catatonic. A companion who has built deep trust over a long campaign will act without being asked — sometimes in ways the player does not expect and cannot control.
Relationships here can be ruined and stay ruined. That is not a bug; it is the most realistic thing a relationship system has ever done in a game. The soldier in one playthrough went catatonic after the wrong words in a moment of anger and never forgave the player. The game did not offer a repair arc or a reconciliation quest. He spat when they passed him.
Companion knowledge file: RomanceCronos, which governs the relationship engine’s rules and companion memory compression.
Download The Chronicler → | Full Review →
Eirathis Strider
Model: Gemini (Gem) or ChatGPT (Custom GPT) Genre: Open-world mature adventure Best for: Players who want Witcher/BG3 tone, dice-less tactical combat, and a layered cosmology that rewards exploration across dimensions
The most mechanically complex Arcanum Original. Eirathis runs on a three-layer cosmological model: the Mortal Expanse (the surface world), the Dreaming Weave (a dimension of memory and echo), and the Primordial Substrate (the oldest layer, where fundamental forces are rooted). These three layers occupy the same geographic space across different dimensions. They communicate with each other constantly.
The practical consequence: problems on the surface may have origins in a deeper layer, and solutions found at the right layer propagate upward. An army of spirits locked in a repeating moment of their destruction, bleeding unease into the Mortal Expanse above them, can be freed by tracing their destruction to its source in the Primordial Substrate. What you do in any layer alters the others.
Combat is dice-less — outcomes determined by skill tier, tactical quality, enemy knowledge, and preparation. Fight a spirit with conventional weapons and you will not beat it regardless of effort. Learn what it is, find the right approach, counter its nature, and something that seemed overwhelming becomes manageable. This is the design philosophy applied consistently: preparation beats power, every time.
The companion system includes a jealousy engine, a proactivity loop where companions pursue their own goals between scenes, and a romance layer that is culturally textured to each companion’s faction of origin. One playthrough ended with the player sacrificing themselves to hold interdimensional destruction magic at bay while the surviving party members formed a circle around them and called out the things they had done together as they fought. One companion died in that fight. The others did not stop.
Companion knowledge file: Atlas Eirathis, the world canon covering geography, factions, the three layers, creature types, and resolution mechanics.
Download Eirathis Strider → | Full Review →
Star Freighter Drift
Model: ChatGPT (Custom GPT), Claude (Project), Gemini (Gem) Genre: Sci-fi space-trading survival sim Best for: Players who want systemic tension — three mechanical pillars in constant conflict, no guaranteed safe outcome
The most mechanically precise of the four Originals. Star Freighter Drift runs on three interlocking systems that are permanently in tension: Trade (the freight economy and cargo management), Heat (customs attention and contraband risk), and Ship Integrity (reactor stability and mechanical failure). Playing well means managing all three simultaneously. Prioritise profit and take on contraband runs, Heat climbs and customs start watching. Ignore the reactor for too long and Ship Integrity deteriorates. Coast safely on legitimate cargo and you can’t afford the repairs that keep Integrity up. The three pillars cannot all be optimised at once. That is the game.
The tone is Firefly meets The Expanse: a working-class spacefaring sim where the ship is the home, money is always tight, the cargo isn’t always legal, and the customs inspector at the next gate might be the end of everything. No chosen-one narrative. No saving the galaxy. Just running cargo, dodging customs, and keeping the reactor from melting.
Companion knowledge file: Star Chart & Systems Manual, the world canon covering the route network, faction territories, cargo tables, and the three-pillar resolution mechanics.
Download Star Freighter Drift → | Full Review →
The Syndicate (New — Coming Soon)
Model: ChatGPT (Custom GPT) Genre: Underworld crime RPG Best for: Players who want reputation as a mechanical system — a world that remembers who you are and reacts to it before you act
The fifth Arcanum Original, currently in final testing. The Syndicate is set in Vaille, a gas-lit port city where the real power belongs to five forces — the Harbour Cant, the Ashgate Kings, the Velvet Court, the Iron Ring, and the Counting House — each of which reads your reputation by different rules.
The flagship mechanic is The Ledger: a hidden two-axis system tracking your Shape (what kind of operator the world believes you are) and your Weight (how widely known that name has become). Shape emerges from your pattern of actions; it is never chosen. Weight is the danger axis — each tier up multiplies both opportunity and the forces arrayed against you. The core tension: visibility is power and danger simultaneously. The game cannot be won by staying small, and cannot be survived by becoming famous too fast.
The Ledger cannot be reset. You can outrun a reputation; you cannot erase it. The city’s memory persists.
Watch for the full release at /arcanum-games/.
Public LLM RPG Games — ChatGPT Custom GPTs
The following games are available in the ChatGPT Custom GPT store. These are community and studio creations, reviewed and rated by Arcanum.
This section is regularly updated as new games are reviewed. Submit a game for consideration via arcanumrpgs.com.
For the full, filterable directory of public AI RPG games, visit the Games Directory →
The AI RPG Platform Landscape
LLM-native games are one half of the AI RPG ecosystem. For players who want a dedicated platform with its own interface, visual tools, or a built-in community, the following have been independently reviewed by Arcanum.
| Platform | Rating | Pricing | Best For |
|---|---|---|---|
| Friends & Fables | 3.9/5 | Freemium | Visual tabletop, D&D 5e tactical combat, group play |
| RoleForge | Closed alpha (unrated) | Free | Solo campaigns, clean narrative interface, active development |
| Deep Realms | 2.7/5 | Freemium | Fantasy world-building, rich NPC systems |
| Janitor AI | 3.0/5 | Freemium | Largest character library, BYOM flexibility |
| MacerAI | 2.9/5 | Freemium | Character-driven roleplay, strong persona consistency |
| Taverna | Closed beta (unrated) | Freemium | Collaborative play, community-built worlds |
| Voyage | Beta (unrated) | Freemium | Creator-focused, build-your-own-world tools |
| AI Realm | 2.3/5 | Freemium | Accessible entry point, broad genre support |
| Infinity DM | 2.7/5 | Freemium | DM assistant tools, tabletop prep |
| AI Dungeon | 2.6/5 | Freemium | Maximum creative freedom, the original AI RPG |
All platform reviews are independent. Arcanum has no commercial relationship with any platform listed here. Full reviews at /clients/.
The wider landscape. The category is bigger than the platforms Arcanum has tested first-hand. Others worth knowing — listed here as pointers rather than rated entries, because a rating requires a genuine first-hand review — include Saga (long-form persistent-world AI text RPG), aiga_ (an AI story game with naturally branching narratives), Master of Lore (an AI game master for fantasy and myth campaigns), and LitRPG Adventures (AI worldbuilding and generator tools for GMs). As each is reviewed, it moves up into the rated directory above.
Choosing the Right Model for LLM RPG Play
The model you play on matters. Each of the major consumer LLMs has genuine strengths and real limitations for roleplay specifically.
ChatGPT (Custom GPTs) The most feature-rich environment for LLM gaming. Custom GPTs allow a dedicated game container — separate from your regular ChatGPT history, with a persistent system prompt and optional knowledge files. Excellent at complex world-building, logical consistency, and rule interpretation. The Custom GPT store also has the largest library of community-built RPG games of any platform. Best suited to games with explicit mechanical systems (Aevum, Star Freighter Drift) where logical consistency under rules pressure matters. For curated picks in this category, see the best ChatGPT RPG games →.
Claude (Projects) The strongest prose writer of the three and the most reliable at maintaining character voice and emotional nuance across a long conversation. Claude Projects work similarly to Custom GPTs — a persistent system prompt, uploaded knowledge files, and a contained game environment. The most natural fit for relationship-heavy games (The Chronicler) where the quality of NPC dialogue and psychological depth matter more than mechanical precision. Claude also enforces player agency more naturally than the other models, making it a stronger host for games with strict agency protocols. For the standouts, see the best Claude RPGs →.
Gemini (Gems) The practical advantage Gemini has over the other two is context window: Gemini’s 2M token window is the largest available to consumer users, which means longer campaigns before memory compression becomes critical. Gemini Gems function like Custom GPTs and Claude Projects — a dedicated game container with a persistent prompt and knowledge files. Well-suited to games with large world bibles (Eirathis Strider’s Atlas is substantial) where the model needs to hold a lot of lore in working memory simultaneously. The Gem library is currently the thinnest of the three, which is both a limitation and an opportunity for early content. See the current standouts in the best Gemini RPG games →.
Grok (Custom Agents & Workspaces) The newest of the group and the strongest on emotional intelligence and permissiveness. Grok leads roleplay emotional-IQ rankings and refuses dark or mature scenes far less than the others, making it a natural fit for character-driven, companion, and freeform play. Its container is a pair — Custom Agents (named GM personas) plus Workspaces (persistent files and instructions) — and the fast tier’s multi-million-token context suits very long sessions. The trade-off is weaker rule-following than Claude or GPT, so it’s a better character model than a strict-mechanics engine. See the Grok RPG guide → or grab two ready-to-paste Grok RPG prompts →.
For a full comparison including DeepSeek, MiniMax M2, and local models, see Best LLM for Roleplay →.
The Problems That Kill Most AI Campaigns (And How Good Games Solve Them)
Most LLM RPGs fail not because of bad writing but because they don’t solve the structural problems of the medium. Understanding these failures helps you evaluate any game you encounter.
The turn-50 amnesia problem. Every LLM has a context window — a limit to how much conversation it holds in active memory. When a campaign exceeds that window, the oldest information begins dropping. The NPC who swore a blood oath in session three greets you like a stranger in session ten. Character names drift. Established world rules get forgotten. Well-engineered games build explicit memory compression systems into their prompt architecture — structured save-states, campaign memory protocols, or player-maintained logs that reinstate context at the start of each session. Games without this are not long-campaign games. See our Campaign Memory Tool →
Narration drift. The most common agency failure in LLM games: the AI begins making decisions for the player. It narrates their thoughts. It invents their dialogue. It fast-forwards through scenes the player should be playing. This typically starts small and compounds over a session. Well-engineered games include explicit, hard-walled agency protection in their prompt — the equivalent of a constitutional rule that the player controls all thoughts, words, and actions, with a specific command to invoke when the model drifts. Games without this will consistently override the player’s choices.
The thin-prompt collapse. Many “AI RPG games” are not games at all — they are a single paragraph of setup with no mechanical depth, no memory architecture, and no systematic world. They work for one session and collapse into generic fantasy storytelling by the third. A genuine LLM RPG game has a world canon, a resolution system, a relationship engine, and explicit rules for the AI to follow. The craft is in the prompt engineering, and the difference between a good game and a thin one is immediately apparent to anyone who has played both.
Random chance substituting for preparation. Many LLM games lean on dice rolls as the primary resolution mechanic. This is a design shortcut — it means the game doesn’t need to model the quality of the player’s preparation or the intelligence of their approach. The best LLM games are deterministic: outcomes come from what the player knows, what they’ve prepared, and how well they’ve thought through their approach. Luck is not a design philosophy; it’s an absence of one.
Frequently Asked Questions
What is an AI RPG directory? An AI RPG directory is a curated hub for discovering AI-driven roleplaying games, game-master tools, and platforms. A good one catalogs both LLM-native games — Custom GPTs, Claude Projects, and Gemini Gems that run inside an AI you already use — and standalone AI RPG platforms like AI Dungeon or Friends & Fables, with independent reviews rather than self-promotion. Arcanum is a dedicated AI RPG directory covering both, with first-hand ratings and no paid listings.
What is the difference between an LLM RPG game and an AI RPG platform? An LLM RPG game runs inside an AI you already use — a Custom GPT inside ChatGPT, a Project inside Claude, a Gem inside Gemini. No separate account, no new subscription. An AI RPG platform is a standalone product with its own interface, account, and usually its own pricing. Both have value; they serve different preferences. This directory covers the first. Arcanum’s clients section covers the second.
Do I need a paid subscription to play these games? Most of the games in this directory run on the free tiers of ChatGPT, Claude, and Gemini, though free tiers have usage limits. Games with large knowledge files (Aevum’s Atlas, Eirathis’s world bible) may benefit from paid tiers that allow larger file uploads. All Arcanum Originals are free to download regardless of which model tier you use.
How is this different from just prompting ChatGPT to run a fantasy RPG? A bare prompt produces a generic session that collapses within twenty turns. Engineered LLM RPG games have explicit memory architectures, player agency protocols, deterministic resolution systems, world canons, faction simulators, relationship engines, and signature mechanical identities. The craft gap between a thoughtful bare prompt and a well-engineered game engine is enormous — approximately equivalent to the gap between a rough sketch and a finished design.
How often is this directory updated? The Arcanum Originals section reflects the current release state of each game. The public games section is updated as new reviews are completed. If you’ve built or found an LLM RPG game that should be in this directory, contact Arcanum at arcanumrpgs.com.
What’s the best LLM RPG for a complete beginner? Star Freighter Drift has the most immediately legible premise and the clearest mechanical frame. Aevum Realm Architect is the deepest but also the most demanding. The Chronicler is the right choice if relationships are your primary interest and you’re willing to bring your own world. Eirathis Strider rewards players who invest in the lore. Start with Star Freighter or Aevum for your first session.
What’s the best free AI RPG game overall? Every Arcanum Original is free. Of the four currently available, Aevum Realm Architect is the most complete long-campaign engine. The Chronicler is unmatched for relationship depth. Pick based on what matters most to you in a campaign.
Can I play these on mobile? Yes. ChatGPT, Claude, and Gemini all have mobile apps. Custom GPTs, Projects, and Gems are accessible on mobile. The games in this directory are fully playable on phone or tablet.
What does “LLM-native” mean? A game designed from the ground up for a large language model interface, rather than adapted from a traditional tabletop or video game framework. LLM-native design accounts for the specific strengths and failure modes of language models — context windows, character drift, agency erosion, resolution without dice — in a way that traditional game design frameworks do not.
About This Directory
Arcanum is the dedicated home for LLM roleplay games — the first site built specifically for this category. Every review is written from first-hand experience by Rukka Nova, whose background in roleplaying spans four decades across tabletop systems, computer RPGs, MUDs, and emergent simulation games, and who began engineering LLM game systems from the moment large language models became capable of sustaining them.
No game in this directory has paid for its listing or its rating. No platform has a commercial relationship with Arcanum. Ratings reflect genuine assessment of mechanical quality and playability, not promotional arrangements.
The Arcanum Originals were built to solve the problems this directory documents. They are here because they are the most complete examples of the design philosophy Arcanum represents — not because Arcanum made them. If a better-engineered game exists that belongs above them, it will be listed above them.
The directory grows as the category grows. If you have built an LLM RPG game that belongs here, or found one that does, Arcanum wants to know about it.
Visit Arcanum → | Games Directory → | Platform Reviews → | Download the Originals →