Tabletop RPG
The Toll at Blackbridge
The tollkeeper takes payment in memories, and tonight the bridge will not let anyone leave.
- Players
- 1–2
- Length
- 1–2 hours
- Rated
- 12+
- Version
- 1.1.0
- Updated
Works with ChatGPT · Claude · Gemini. Free, no signup.
Opens ChatGPT or Claude with the play prompt ready; press send if it hasn't started. Same link on your phone as on your desktop. Another app? Copy the play prompt into it, or, if it can't open links, copy the full game card below. What works where.
No web access, or want it as an installed app?
The game card is the entire game, about 12k characters: every scene and rule, and the answers the AI referees from. Paste it into an assistant that can't open links, without reading it first: it gives the game away. The Skill installs The Toll at Blackbridge into Claude on any plan: download it, then turn on code execution under Settings → Capabilities and add it at Customize → Skills → + → Upload a skill.
The Toll at Blackbridge is a one-night mystery for one or two players, run by your AI game master: the bridge is owed a thing it was never given, and the river is rising. 1–2 players, 1–2 hours a run, free to play inside ChatGPT, Claude, or Gemini. No signup and nothing to install: open it in your assistant, paste the play prompt into another, or paste the whole card where links don't open.
How to start
- Open it in your AI. Tap Open in ChatGPT or Open in Claude, and press send, or paste the play prompt into any assistant that can open links. No paid plan required.
- The game loads. The AI loads Ironquill, our small rules system for AI-run role-playing, and sets the scene at the bridge's toll house.
- Play your character. Describe what you do. The AI narrates outcomes, plays the tollkeeper and townsfolk, and rolls the dice: in code if your app can run it, otherwise off the printed dice tape.
- Save when you stop. Ask for a save code before you close the chat. To resume, open the game again in a new chat and paste the code once it loads, or use aigamecards.com/resume.
Questions
- Do I need to install anything to play?
- No. Open it in ChatGPT, Claude or Gemini, or paste the play prompt, and it runs, with no signup, download or account beyond the chat app you already use. Dice are rolled in code if your app can run it, otherwise off the printed dice tape, and saves are plain text, so everything stays inside the conversation.
- What is Ironquill?
- Ironquill is our original tabletop role-playing system, built to be run by an AI game master. Blackbridge is where you learn it: the game master explains each rule in one plain sentence the first time the night calls for it.
- Can I play solo?
- Yes. Solo, you take one of three ready-made characters: a whisper (a sneak), a warden (a fighter who shields others) or an archivist (a scholar). The AI plays Old Maundry the tollkeeper, the queue behind you, and a town with gaps in its memory. With two, you take one each and split the night's decisions. Either way the AI narrates and rolls, but never speaks for your character.
- What does the tollkeeper take as payment?
- Memories, and the card treats them as things you carry. A failed roll can cost you one: Old Maundry lifts it, you strike one item off your character's list, and whatever you knew that came with it goes too. You can reach the gate emptied out and still settle the bridge's debt, but the memories you still hold at the end are up to half your score.
12+ — memory loss as a mechanic, a girl drowned as a toll in the town's past, and a player character who can drown.