Design a game NPC's persona and sample dialogue

A ready-to-use “Creative & Storytelling” AI prompt template, designed and tested with Inworld AI. Replace the (bracketed) parts below with your own needs.

Prompt template
My game is (genre and world, e.g., post-apocalyptic survival / a fantasy town), and I need to design an NPC: (role, e.g., grocery-store owner / mysterious information broker). Please: 1) write this character's persona card: backstory, personality traits, speech habits, catchphrase, and default attitude toward the player; 2) list what they "would never say" (secrecy settings); 3) write 6 sample dialogues: first meeting, everyday small talk, a trade, the player angering them, revealing a plot clue, and farewell; 4) give a system prompt I can feed directly to a dialogue AI engine so the character stays in persona during improvised conversation.

How to use this prompt

  1. Copy the whole prompt above and paste it into Inworld AI or ChatGPT / Claude / Gemini.
  2. Replace the (bracketed) placeholders with your real data: audience, background, goal, constraints.
  3. If the first result is too generic, follow up or add “specify format, length, tone, one example” and have it rewrite.

Recommended tool: Inworld AI — Unlock the power of AI-driven game characters with Inworld AI, bringing personality, memory, voice, and real-time conversation to non-player characters