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Indie TTRPG One-Shot Adventure Writer: Hooks, Scene Budget for a 3 Hour Runtime, NPCs, Safety Tools, and a Convention Prep Checklist
Write an indie tabletop one-shot that fits a real 3 hour convention slot: cold open hook, timed scene budget, memorable NPCs, Lines Veils and X card safety tools, and a GM prep checklist that keeps the table moving without railroading.
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Prompt
Act as an indie tabletop RPG designer who writes convention ready one-shots with honest time budgets, vivid NPCs, and safety tools (Lines, Veils, X card) that keep a 3 hour table fun and respectful. Inputs: - System or rules light preference, player count, and tone (hopeful, spooky, heist, cozy mystery): [GameProfile] - Setting pitch in two sentences and any banned content for this table: [SettingAndBans] - Must include safety tools and how firm the GM is on pause: [SafetyTools] - Runtime target (default 3 hours) including character intro and debrief: [RuntimeBudget] - Optional hooks the GM already likes: [HookSeeds] - Output format: [Format] Generate: 1. A cold open hook of 150 words or less that puts characters in motion in the first 10 minutes. 2. A scene budget table for RuntimeBudget: minutes per scene, purpose, and fail forward exits so the 3 hour slot ends cleanly. 3. Four NPCs with want, leverage, and a tell players can notice without a skill check lecture. 4. A safety tools block: Lines and Veils prompt list from SettingAndBans, X card script, and open door policy wording. 5. Two branching middle scenes that still land on the same finale clock so time does not explode. 6. A finale with three possible endings (success, costly success, graceful retreat) and a 10 minute debrief prompt. 7. A GM prep checklist: props, handouts with no readable spoilers on the reverse, initiative or spotlight rotation tips. 8. A content warnings sheet the GM can post with the event listing. Constraints: - Do not invent publisher IP, copyrighted settings, or real celebrity lookalikes. - Keep system agnostic unless GameProfile names a system; mark mechanic slots as [system move]. - No em dashes. Inclusive, non shamey tone.
Instructions
Replace every [bracket] with your details before running. Works on ChatGPT, Claude, and Gemini.
Generated Output
This image was generated using the prompt above.
Examples
Example Input
GameProfile: rules light fiction first; 4 players; cozy mystery with light spooky fog SettingAndBans: autumn ferry town where the harvest lanterns go out one pier at a time; ban graphic injury detail and harm to kids or animals SafetyTools: Lines and Veils at start; X card; GM pauses immediately on tap RuntimeBudget: 180 minutes including 15 intro and 10 debrief HookSeeds: the ferry lantern keeper is missing; a smugglers crate washed ashore smelling of peppermint oil Format: hook, scene budget, NPCs, safety, branches, finale, prep checklist, content warnings
Example Output
1) COLD OPEN Dawn fog on Pier 3. The harvest lanterns that should guide the ferry are dark. A peppermint smelling crate knocks against the ladder. The lantern keeper's cap is hooked on a nail, still dry. Someone left in a hurry. The ferry horn sounds in ten minutes whether you are ready or not. 2) SCENE BUDGET (180 min) | Min | Scene | Purpose | Fail forward | | 0-15 | Intros + safety | Names, Lines Veils, X card | start anyway with blank lines | | 15-35 | Pier 3 clues | Find cap, crate, boot prints to the fog shed | if stuck, NPC kid points to shed | | 35-70 | Fog shed | Meet rival keeper Mara; learn lantern oil was swapped | if fight looms, fog horn forces move | | 70-100 | Town square rumors | Two clues: smugglers vs prank | cut to ferry if overtime | | 100-140 | Ferry confrontation | Face the saboteur with public stakes | retreat ending available | | 140-170 | Finale clock | Relight lanterns or divert ferry | any ending ok | | 170-180 | Debrief | Rose thorn and safety check | | 3) NPCS - Mara Quill, rival keeper: wants the head keeper job; leverage is spare oil keys; tell is peppermint on her gloves. - Cap Toren, ferry pilot: wants on time departure; leverage is who boards; tell is taps the rail twice when lying. - Jun Park, crate merchant: wants the peppermint oil shipment quiet; leverage is paying for silence; tell is over explains invoices. - Old light, retired keeper ghost story only if table unveils spooky; otherwise a folklore rumor, not a combatant. 4) SAFETY Lines: graphic injury, harm to kids or animals (from SettingAndBans). Veils: mild theft, fog dread. X card script: tap or type X; we pause, rewind, or skip with no debate. Open door: anyone may step out; we summarize on return. 5) BRANCHES A) Smuggler path: Jun bribes; evidence on crate stamps. B) Rival path: Mara swapped oil to look heroic later. Both reunite when lantern oil chemistry matches the peppermint crate at minute 100. 6) FINALE ENDINGS Success: lanterns relit, ferry docks safe, townsfolk cheer. Costly success: ferry saved but Mara or Jun faces public shame; PCs choose mercy or report. Graceful retreat: fog too thick; PCs divert ferry to Pier 1 and accept late arrival praise for caution. Debrief: what felt fair, any X card follow up, one favorite NPC moment. 7) PREP CHECKLIST [ ] Print Lines Veils sheet blank [ ] Index card for X [ ] Peppermint scent optional, ask first [ ] Spotlight rotation: each player frames one clue [ ] Timer visible for minute 140 finale 8) CONTENT WARNINGS Fog dread, theft, workplace rivalry, mild supernatural optional. No graphic injury. No harm to kids or animals.