Most AI Game Masters let the AI write the dice. LoomMaster rolls them for real.
If you are comparing AI tabletop tools - or looking for an AI Dungeon alternative - there is one difference that decides whether a session feels like a real table or a generous parrot: who owns the dice. Here is the honest comparison.
The dice are provable, not just promised.
Most AI storytellers - AI Dungeon, ChatGPT-as-a-DM, the wave of chatbot wrappers - are genuinely good at freeform improv, but the trade-off is structural: the rules and the dice live inside the AI's text, so a roll is whatever the model decides to write next. A critical hit, a saving throw, or a death save is a suggestion, not a result.
Some tools - Friends & Fables among them - do run a real 5e engine, and that is a real step up. The difference there is subtler but just as decisive: you see the result the engine reports and take it on trust - there is no way to audit a single roll after the fact.
LoomMaster makes the roll a fact you can check. A real D&D 5e rules engine rolls and validates every die on the server and writes it to a tamper-evident ledger before a single word of narration exists - and you can mint a public Loom Seal so anyone can re-verify every natural d20 your campaign rolled. The AI is a brilliant narrator wrapped around an honest engine - it never decides whether you hit, and it can never quietly touch a roll.
| A typical AI storyteller | LoomMaster | |
|---|---|---|
| Who rolls the dice | The AI writes the result as part of the story | A real rules engine, on the server, before any narration |
| Can a roll be fudged? | Yes - the model can write any outcome | No - the result is sealed to a tamper-evident ledger first |
| Full 5e rules | Approximated in prose | Enforced - slots, save DCs, conditions, death saves, crits |
| Remembers your campaign | Varies; the AI's context can drift over a long story | Persistent server memory across every session |
| Provable / verifiable | Closed - you trust the text | Source-available core; mint a public Loom Seal anyone can re-verify |
| Typical price | Roughly $20 - $50 / month | $29.99/mo (AI included), or $49.99 one-time if you bring your own AI |
Pick the right tool for what you want.
If you want pure, anything-goes storytelling with no rules to honor, a freeform AI is a great choice and we mean that. But if you came from a real 5e table - if you want a critical hit to be a real critical hit, a death save to actually matter, and a Game Master who cannot quietly save you or sink you - then the engine has to own the dice. That is the gap LoomMaster fills.
And because the deterministic core is published source-available - one Rust core that runs byte-identically in TypeScript, Python, and Rust, externally audited, thousands of tests green - "the engine owns the dice" is something you can verify yourself, not a tagline you have to take on faith.
Quick answers.
Can the AI cheat in LoomMaster? No. Every roll is resolved by the engine and sealed to a tamper-evident ledger before narration. Mint a Loom Seal and anyone can re-verify every natural d20.
Do I have to bring my own AI? No. At $29.99/mo we run and pay the AI for you - zero setup, just play. Bringing your own AI over MCP for a one-time $49.99 is an option, not a requirement.
What does it cost to try? Nothing. Start free with 100 Veil Essence - no card, no time limit.
See the difference for yourself.
Start free with 100 Veil Essence - no card, no time limit. Roll a real die, watch the engine seal it, and decide. When you are hooked: $29.99/mo with the AI included, a one-time $49.99 to bring your own, or the $249 Mirror Shard for the first 200 founders - the web tier, locked for life.