Play Beyond the Forbidden Door — a Harry Potter visual novel where a first-year Gryffindor investigates the forbidden third floor with Ron and Hermione. Live LLM narrative, Courage/Friendship/Knowledge choices, painterly wizarding art, all in your browser.
Final Product: Beyond the Forbidden Door
Beyond the Forbidden Door is a playable, LLM-narrated visual novel set in the world of Harry Potter. You are a first-year Gryffindor who, together with Ron and Hermione, decides to investigate the forbidden third-floor corridor on the night a mysterious door appears there.
Every scene is written live: the Great Hall at feast, cold moonlight in the stone corridors, and choices that bend your Courage, Friendship, and Knowledge — until the castle decides what waits behind the door. The story is written live as you play — no two investigations read the same.
Play it now: Beyond the Forbidden Door →
Game Features
- Live LLM Narrative — Every scene, line of dialogue, and twist is written in real time by an LLM as you play. Ron's deadpan, Hermione's research, and the whisper of the castle arrive in the moment (deepseek-v4-flash real-time narrative).
- Courage, Friendship & Knowledge — Your choices move three hidden meters. Brave the dark, trust your friends, or read every clue — and watch how the night ends change with how you played.
- Free-Form Investigation — Type your next move or pick from story options. The narrative engine follows your lead through locked doors, hidden passages, and the shadows that watch from the dark.
- The Golden Trio, Reunited — Harry, Hermione, and Ron appear as full-body transparent sprites with painterly cinematic art, generated from this world's own character cards.
- Painterly Wizarding Art — Premium dark-academia visuals: gothic Hogwarts under moonlight, luminous spell light, a candlelit Great Hall, and torch-lit stone corridors in cinematic painterly realism.
- Browser Playable — Runs instantly in your browser, no download and no setup. Save progress, review the turn log, and pick up your investigation any time.
Character Sprites
Production Process Breakdown
AI receives the prompt "A secret wizarding Britain — Hogwarts, dark magic, and the Boy Who Lived" and generates the Harry Potter world — 21 atom cards: 5 characters, 4 locations, 4 events, 5 houses & forces, 3 relics.
AI designs the game from atom cards: writes the story rules, builds the AVG scene flow, and generates every art asset. Each sprite was generated on a pure-white backdrop, then cut to a transparent PNG via BiRefNet.
Game built and published with one click, instantly shareable online. The live LLM (deepseek-v4-flash) improvises every scene in character as you play.
Scene Backgrounds
Asset Prompts
"Cinematic night exterior of Hogwarts School of Witchcraft and Wizardry castle, gothic towers and spires under stormy moonlight, warm candlelit windows, black lake reflection, dramatic clouds, premium dark-academia wizarding fantasy, painterly realism, luminous atmosphere, no people, no text, no watermark, no live-action likeness, title screen key art, wide establishing shot"
"Full-body visual novel character sprite source image for AVG runtime. One young wizard boy standing upright in a natural neutral pose... Messy black hair, bright green eyes, round glasses, thin lightning-bolt scar on forehead, Gryffindor school robes scarlet and gold trim, white shirt, plain pure white matte background (#ffffff) for clean cutout... Contemporary cinematic wizarding fantasy painterly realism, no live-action likeness, no text, logo, watermark, frame, or UI."
"Forbidden third-floor chamber interior at Hogwarts, enormous three-headed dog silhouette in shadows behind bars of torchlight, giant wooden door slightly ajar, rough stone floor, chains and bones hints, dangerous magical vault atmosphere, cinematic wizarding fantasy painterly realism, dark gothic lighting, no clear human faces, no text, no watermark, visual novel background wide shot"
Why Choose Neta Studio
Professional — Cloud harness system supports the full workflow from world building to game publishing, all running in the cloud with no local setup. Stable access to the latest models: Claude Opus 5 GPT Image 2 DeepSeek V4 Flash
One-click generation — Officially tuned skills drive every step: world building, character design, art generation, game packaging. World fork resource sharing.
Community-first — Users build unlimited worlds, all public worlds can be forked, remixed, reimagined.
Studio Interior
Start Creating
This game was generated by Neta Studio AI from a single sentence. The world took minutes. The game took minutes. You can do it too — adapt this world or start fresh from any IP. No coding required, free to start.