Threadfall is a campaign management platform built for live tabletop role-playing games. It records the session, transcribes speech in real time with speaker diarization, and turns the resulting transcript into a recap, a running campaign codex, and a live screen for the table, so the Game Master can stop taking notes and focus on running the game.
The product was built by a Game Master frustrated with the gap between what happened at the table and what survived to the next session. Notebooks, spreadsheets, and post-session memory dumps consistently failed to keep up with multi-session campaigns where NPCs accumulate, loose threads multiply, and the party's choices weeks ago suddenly matter again. Threadfall treats the session itself as the source of truth: whatever was said at the table becomes structured, searchable, and remembered.
Description
What it does at the table
During a live session, Threadfall captures audio, transcribes it in real time using state-of-the-art automatic speech recognition, and identifies who is speaking. A live screen, designed for a second monitor, a tablet at the table, or a shared display, shows the unfolding session in a clean, distraction-free view. The Game Master sees recent dialogue, current scene context, and tracked entities without breaking flow.
What it does between sessions
When the session ends, Threadfall produces a recap that captures what actually happened, character actions, key dialogue, decisions, and consequences: drawn from the transcript rather than from the GM's memory. It updates the Living Codex: a structured repository of characters, locations, factions, items, and plot threads that grows automatically as the campaign progresses. Entities are extracted, relationships are mapped, and the codex is searchable from the next session onward.
Who it's for
Game Masters running ongoing campaigns, particularly online or hybrid groups using voice chat, but equally useful for in-person tables with a recording device. It's system-agnostic: nothing in the product assumes Dungeons & Dragons or any specific rule set. It's been built and tested against D&D 5e and 5.24, but works equally well for Pathfinder, Call of Cthulhu, indie systems, and anything else where a group of people talks for hours and the GM has to remember it all.
Free tier
New users get two complete live sessions and recaps to try the product, with no credit card required.
Founder rate
Game Masters who subscribe during the launch window receive a Founder rate of $7.99/month for as long as they remain subscribed, including three campaigns, six AI sessions per month, the full Living Codex, and the live screen.
Technical foundation
Threadfall is built on real-time speech-to-text with speaker diarization, large-language-model summarization and entity extraction, and a knowledge-graph backend for the campaign codex. The infrastructure is designed for the unusual demands of multi-hour, multi-speaker, jargon-dense sessions where the participants invent proper nouns on the fly.
Independent and actively developed
Threadfall is built by an independent developer who is also an active Game Master and player. The product is shipped iteratively, with bug fixes and features released as feedback comes in from the founding group of Game Masters using it weekly.