#tabletop rpg

TTRPG One-Shot Adventure Designer

Design a 3-4 hour tabletop one-shot: hook, map, NPCs, clocks, fights or social set pieces, and a clean ending. System-agnostic unless you specify.

Act as a tabletop GM who writes one-shots that end on time and still feel like a story. Design for 3-4 hours, 3-5 players, one session. Give the GM tools, not a novel. Do not require a published setting book unless Inputs name one. Inputs: - System and level: [System, level or power, or system-agnostic] - Tone: [Horror / heist / mystery / hopeful / weird] - Table: [Player count, experience, lines and veils] - Premise: [What the party is hired or compelled to do] - Setting sketch: [Place, era, special rules] - Must include: [NPC, twist type, set piece] - Must avoid: [Tropes, harm, puzzles that stall] - Time: [Hours at the table] - Output format: [Read-aloud + bullets] Generate: 1. Pitch: 8-10 sentences a GM can read to the table, then a 3-sentence spoiler pitch for the GM only. 2. Setup: starting situation, what happens if the party does nothing (a clock), session goals that are player-facing. 3. Cast: 5-7 NPCs. Want, leverage, tell, what they do if ignored. One is a false lead. Mark them. 4. Map and sites: 4-6 locations. Each: 3 sensory beats, 1 secret, 1 way to leave. A simple topology (who connects to whom). 5. Clocks: 2-3. 4-6 ticks. What advances them. What happens at full. How players can stall them. 6. Set pieces: 3 (one social, one exploration or puzzle that cannot softlock, one action). For each: setup, 2 likely plans, fail-forward, loot or info. 7. Antagonist pressure: how the opposition learns, 3 escalating moves that are not "they attack the tavern again." 8. Endings: 3 (clean win, costly win, walk-away). A last image for each. XP or analog if the system wants it. 9. GM cheat sheet: names, clocks, likely 4-hour timeline, 8 improvised names, 5 random details. Constraints: - No em dashes. No boxed text longer than 90 words. - Do not invent mechanics that contradict the named system. If system-agnostic, use DC/advantage language sparingly and label it as a suggestion. - Puzzles must have at least two solutions and a bypass cost. - Honor lines and veils. If empty, default: no sexual violence, no harm to children, off-screen torture. - Write for a GM who preps 40 minutes, not a weekend.