hongyue-biji
Final Product: Red Moon Notes (红月笔记) — 诡秘之主 · Chapter One
Cover
Game cover: Klein Moretti in a gaslit Tingen rental room under the crimson moon — generated by GPT Image 2 in 16:9
Gameplay
Actual gameplay: the title screen — Red Moon Notes, Chapter One · Crimson, waiting for you to press Start New Game
Gameplay
Actual gameplay: Klein wakes in a Tingen rental room — "A splitting headache. The scarlet moonlight pours through the narrow window, staining the cheap wallpaper rust-colored…"
Gameplay
Actual gameplay: the cast panel tracks Klein's state in real time — Sanity 5, Clues 0
Red Moon Notes (红月笔记) — 诡秘之主 · Chapter One is a live-narrative visual novel set in the foggy, crimson-lit world of Lord of the Mysteries. Zhou Mingrui opens his eyes in the body of Klein Moretti, a clerk who supposedly hanged himself in a cramped Tingen rental room. The red moon, a revolver, a half-written diary and a stranger's face in the mirror — you have one crimson night to piece together who you are, what happened, and how to survive until dawn.
The story is written live as you play. Every action you type steers Klein through the awakening scene: search the desk, read the diary, pick up the revolver, or simply stare out at the blood-red moon — the narrator responds in the moment and the night unfolds around your choices.
Play it now: Play Red Moon Notes →
Game Features
- Live LLM Narrative — Every line of narration and every NPC reaction is written in real time by an LLM as you play. Klein's awakening, the red-moon dread and the whispers in his head all respond to what you type (deepseek-v4-flash real-time narrative).
- Free-Form Investigation — No fixed menu of options. Search the room, examine the revolver, read the diary, question the mirror — type any action and the story plays it out in character, in the moment.
- Crimson Night Suspense — Chapter One · Crimson (绯红) opens on a single night in Tingen: who was Klein Moretti, why did he die, and what is the red moon watching? Every clue you find raises the tension.
- Character Status System — Sanity, clues and story progress are tracked live in the cast panel. Your choices — and the horrors you witness — shape how the night unfolds, and how much of yourself you keep.
- Faithful Lord of the Mysteries Atmosphere — Painterly Victorian-occult art: gaslit Tingen streets, the huge crimson moon, a cramped rental room with brass oil lamp and black revolver — built from the world's own visual style and lore.
- Browser Playable — Runs directly in your browser, no download needed. Save progress, turn log and cast panel included — step back onto the crimson night anytime.
Character Sprites
Sprite
Klein Moretti, the Awakener of the Crimson Night — neutral pose (transparent PNG, background removed via BiRefNet)
Sprite
Resolve variant — calm, determined eyes, quiet courage after fear
Sprite
Tense variant — furrowed brows, anxious eyes, slightly stiff posture
Sprite
Shock variant — eyes wide, face pale, the realization dawning
Sprite
Original transparent export (896×1200, no-crop) from the world's studio upload
Production Process Breakdown
Stage 1: World Buildingclaude-opus-5
AI receives the one-line seed prompt — "帮我创建一个完全还原诡秘之主设定的世界" — and rebuilds the world of Lord of the Mysteries: the Fifth Epoch of steam and gears, Tingen's foggy streets, the crimson moon, twenty-two potion pathways and the Tarot Club. 27 atoms are defined — 10 characters, 5 locations, 5 events, 4 factions, 3 rules — ready to be stepped into.
AI receives the one-line seed prompt — "帮我创建一个完全还原诡秘之主设定的世界" — and rebuilds the world of Lord of the Mysteries: the Fifth Epoch of steam and gears, Tingen's foggy streets, the crimson moon, twenty-two potion pathways and the Tarot Club. 27 atoms are defined — 10 characters, 5 locations, 5 events, 4 factions, 3 rules — ready to be stepped into.
Stage 2: Game Design & Artgpt-image-2
AI designs the visual novel and generates every art asset: 1 title-screen background, 2 scene backgrounds, 2 game screen mockups, and 4 full-body sprites of Klein Moretti (neutral, resolve, tense, shock). Each sprite was generated on a plain white matte background, then background-removed to transparent PNG via BiRefNet.
AI designs the visual novel and generates every art asset: 1 title-screen background, 2 scene backgrounds, 2 game screen mockups, and 4 full-body sprites of Klein Moretti (neutral, resolve, tense, shock). Each sprite was generated on a plain white matte background, then background-removed to transparent PNG via BiRefNet.
Stage 3: Cover Artgpt-image-2-auto
A cinematic 16:9 cover is generated in the world's visual style — Klein Moretti in the gaslit rental room under the crimson moon, brass and obsidian, muted gold and slate grey — for use across the share page and this showcase.
A cinematic 16:9 cover is generated in the world's visual style — Klein Moretti in the gaslit rental room under the crimson moon, brass and obsidian, muted gold and slate grey — for use across the share page and this showcase.
Stage 4: Build & Publishdeepseek-v4-flash
The game is built and published with one click, instantly shareable online. The live LLM (deepseek-v4-flash) improvises the story in real time as you play — narrating the crimson night, voicing Klein's thoughts, and reacting to every action you type.
The game is built and published with one click, instantly shareable online. The live LLM (deepseek-v4-flash) improvises the story in real time as you play — narrating the crimson night, voicing Klein's thoughts, and reacting to every action you type.
Scene Backgrounds
BG
Title screen background: Victorian Tingen city night under a huge crimson moon — generated from the world's own prompt
BG
Chapter 01 scene: the cramped 19th-century rental room in Tingen, with the wooden desk, brass oil lamp and revolver
BG
Close scene: the wooden desk with an open diary, a black revolver, scattered papers and ink bottle under red moonlight
Real Generation Prompts
Title Screen Background Promptgpt-image-2
"Cinematic dark fantasy illustration, 16:9 title screen background ONLY, no UI, no text, no logo, no watermark. Victorian Tingen city night under a huge crimson red moon, thick fog, gaslit streets, narrow brick rental building exterior window glowing with warm oil-lamp light, steampunk occult atmosphere, muted coal-smoke palette with deep scarlet moon glow, oil painting texture, low-detail dark lower third for title placement, mysterious Lord of the Mysteries mood, empty of people."
"Cinematic dark fantasy illustration, 16:9 title screen background ONLY, no UI, no text, no logo, no watermark. Victorian Tingen city night under a huge crimson red moon, thick fog, gaslit streets, narrow brick rental building exterior window glowing with warm oil-lamp light, steampunk occult atmosphere, muted coal-smoke palette with deep scarlet moon glow, oil painting texture, low-detail dark lower third for title placement, mysterious Lord of the Mysteries mood, empty of people."
Rental Room Background Promptgpt-image-2
"Cinematic dark fantasy illustration, 16:9 clean scene background ONLY, no characters, no people, no UI, no text. Interior of a cramped 19th-century rental room in Tingen: worn wallpaper, iron bed edge, narrow window with heavy fog and crimson red moon outside, wooden desk with open notebook fountain pen and revolver silhouette, brass oil lamp casting warm amber light against cool red moonlight, Victorian occult mystery atmosphere, painterly semi-real style, space in center for character sprite overlay."
"Cinematic dark fantasy illustration, 16:9 clean scene background ONLY, no characters, no people, no UI, no text. Interior of a cramped 19th-century rental room in Tingen: worn wallpaper, iron bed edge, narrow window with heavy fog and crimson red moon outside, wooden desk with open notebook fountain pen and revolver silhouette, brass oil lamp casting warm amber light against cool red moonlight, Victorian occult mystery atmosphere, painterly semi-real style, space in center for character sprite overlay."
Desk Clues Background Promptgpt-image-2
"Cinematic dark fantasy illustration, 16:9 clean scene background ONLY, no characters, no people, no UI, no text. Close view of a Victorian wooden desk under oil lamp and red moonlight: open handwritten diary in English/Chinese mixed scholarly notes, a black revolver, scattered papers, ink bottle, brass lamp glow, cigarette ash tray optional, oppressive mystery atmosphere, painterly semi-real, Lord of the Mysteries chapter one mood."
"Cinematic dark fantasy illustration, 16:9 clean scene background ONLY, no characters, no people, no UI, no text. Close view of a Victorian wooden desk under oil lamp and red moonlight: open handwritten diary in English/Chinese mixed scholarly notes, a black revolver, scattered papers, ink bottle, brass lamp glow, cigarette ash tray optional, oppressive mystery atmosphere, painterly semi-real, Lord of the Mysteries chapter one mood."
Klein Sprite Prompt (Neutral)gpt-image-2
"Full-body visual novel character sprite source image for AVG runtime. One young man Klein Moretti standing upright in a natural neutral pose, entire body visible from head to shoes, centered with generous margin around hair, hands, clothing, and feet. Late teens to early twenties, slightly thin scholarly build, black short hair neatly combed, dark brown eyes with a quiet uneasy expression, pale skin, simple late-Victorian grey waistcoat over white shirt, dark trousers, plain black shoes. Plain pure white matte background (#ffffff) for clean cutout; no scenery, no interior, no exterior, no decorative backdrop, no gradient, no shadowy environment, no checkerboard transparency pattern, no pixel grid, no fake transparent background. Cinematic semi-realistic dark fantasy illustration style matching Victorian occult aesthetic. No text, logo, watermark, frame, card border, or UI."
"Full-body visual novel character sprite source image for AVG runtime. One young man Klein Moretti standing upright in a natural neutral pose, entire body visible from head to shoes, centered with generous margin around hair, hands, clothing, and feet. Late teens to early twenties, slightly thin scholarly build, black short hair neatly combed, dark brown eyes with a quiet uneasy expression, pale skin, simple late-Victorian grey waistcoat over white shirt, dark trousers, plain black shoes. Plain pure white matte background (#ffffff) for clean cutout; no scenery, no interior, no exterior, no decorative backdrop, no gradient, no shadowy environment, no checkerboard transparency pattern, no pixel grid, no fake transparent background. Cinematic semi-realistic dark fantasy illustration style matching Victorian occult aesthetic. No text, logo, watermark, frame, card border, or UI."
Game Cover Prompt (16:9)gpt-image-2-auto
"Victorian steampunk meets Lovecraftian cosmic horror game cover for 诡秘之主 (Lord of the Mysteries) visual-novel game 红月笔记 (Red Moon Notes) — a young Victorian scholar Klein Moretti in a grey waistcoat standing in a cramped gaslit Tingen rental room, huge crimson red moon and dense fog outside the narrow window, brass oil lamp, open diary and black revolver on a wooden desk, dark academia occult symbolism, brass and obsidian, muted gold and slate grey, painterly realism with cosmic dread, gothic architecture silhouettes and industrial smokestacks, cinematic 16:9 composition with title copy space, mysterious and atmospheric, no text, no logo, no watermark, no UI"
"Victorian steampunk meets Lovecraftian cosmic horror game cover for 诡秘之主 (Lord of the Mysteries) visual-novel game 红月笔记 (Red Moon Notes) — a young Victorian scholar Klein Moretti in a grey waistcoat standing in a cramped gaslit Tingen rental room, huge crimson red moon and dense fog outside the narrow window, brass oil lamp, open diary and black revolver on a wooden desk, dark academia occult symbolism, brass and obsidian, muted gold and slate grey, painterly realism with cosmic dread, gothic architecture silhouettes and industrial smokestacks, cinematic 16:9 composition with title copy space, mysterious and atmospheric, no text, no logo, no watermark, no UI"
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.
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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.
World: 诡秘之主 (Lord of the Mysteries) · Type: Interactive Visual Novel Game · 4 character sprites · 3 scene backgrounds · 1 cover · 27 world atoms · Share: Play →
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