AI-narrated D&D 5e campaigns · solo or with your party

The story bends.
The dice don't.

Critspark pairs an AI storyteller with a real 5e rules engine. The AI narrates every moment — but every roll, every spell slot, every hit point is resolved by deterministic rules it can never override.

ATTACK  d20+7 = 20 · CRIT  → greatsword 4d6+4 → 24 slashing
"Your blade finds the seam in the wyrm's scales — and the night goes white."

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Voice, not brain

Every AI game master lies about the dice.
Ours never touches them.

THE VOICE

What the AI does

Narrates every scene in prose worth reading.

Plays every NPC with memory and motive.

Improvises when you walk off the map.

Describes the outcome — after the engine decides it.

THE BRAIN

What the rules engine does

every d20 rolled server-side — never imagined

spell slots, action economy & conditions enforced

AC, saves, concentration, death saves — 5e, by the book

initiative, movement & range on a real grid

The AI tells the story. It never decides it.

The table

A campaign that plays like a game,
and reads like a novel.

Tactical combat

Combat on a real battlemap

When steel comes out, the story drops onto a tactical grid — initiative, movement, action economy, opportunity attacks — resolved by the engine and narrated blow-by-blow. Win because you played it well, not because the AI felt generous.

Critspark tactical battlemap: a fighter surrounded by aarakocra in jungle ruins, with turn order, action bar, and a combat log showing real d20 rolls
LIVE APP FOOTAGE
Living narrative

A world that remembers

NPCs hold grudges. Quests advance while you're elsewhere. The tavern you burned down stays burned. Your campaign is persistent, stateful, and yours — the storyteller reads the world; it doesn't invent it fresh each scene.

Critspark narrative session: long-form storyteller prose beside a character sheet rail with vitality, spell slots, and equipment
LIVE APP FOOTAGE
Multiplayer beta

Bring your party

Play solo with AI companions, or share the table with friends — everyone at the same battlemap, in the same living story, with one tireless storyteller who never cancels session.

The forge

Forge anything

Homebrew subclasses, spells, monsters, and items — authored through the same rules engine, so your creations are playable mechanics from the moment you make them, not flavor text.

Closed beta · 2026

The spark catches soon.

Seats at the table are limited while we run the multiplayer beta. Get in line — or get in.

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Already invited to the beta? Sign in here