FROGMAN -RAINFALL- ~Rain : It's the beginning of the Feast~

"On a rainy night, a faceless monster wielding a hoe appears — FROGMAN — dragging people away into a world of eternal rain——"

A Japanese horror visual novel featuring branching choices that dramatically alter the story, with 5 multiple endings.

Set in an eerie village, a tale of madness, terror, and mysterious talking French Bulldogs known as "KEROBULL" unfolds into a bizarre, mysterious night.

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◆ 🩸 1. Story

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One month ago, MOMOKA's younger sister YUZUHA vanished after joining a "sweet potato digging tour" at Ama-imo Village.

With police searches turning up nothing, MOMOKA follows unsettling rumors spreading online and ventures alone into the eerily silent village on a stormy, rain-drenched night.

An abandoned station with no one in sight. A mysterious shop selling nothing but sweet potatoes.

And a group of strange, talking French Bulldogs — the KEROBULL.

Amid the relentless downpour and rolling thunder, a cold presence creeps closer from behind, footsteps carving through the mud.

Can MOMOKA rescue her sister from this otherworldly village — and make it out alive——?

5 multiple endings await. One wrong choice, and you too will be swallowed by the world of rain……

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◆ 🎮 2. Controls

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■ Basic Controls

・Input : Action

・Left Mouse Click : Advance text / Next page

・Enter Key : Advance text (disabled during choices)

■ Space Key — 3-Stage Cycle

・State : Space Key Effect

・Text displayed : Hide UI and show background fullscreen

・Choices displayed (1st press) : Hide text box only, highlight choices

・Choices displayed (2nd press) : Hide all UI including choices, show background only

・Video playing : Skip video and proceed to next scene

■ System Features

- LOG (History): Review past dialogue and narration

- KEROBULL Album: A card collection of all rescued KEROBULL characters

- Fate's Branching Map (Flowchart): Track story progress and unlocked endings

- Fullscreen: Switch browser to fullscreen mode

- Text Speed: Choose from 4 speeds — Slow / Normal / Fast / Instant

- Auto-Save: Automatically saves at each story branch point

[NOTICE] [KEROBULL Rescue Note]

To unlock the true ending, do NOT use the flowchart's time-skip (warp) feature. You must play through from the beginning without skipping, and give Yaki-Imo (roasted sweet potatoes) to every KEROBULL you encounter.

Playtime : Approx. 20–30 minutes to unlock all endings / complete the flowchart.

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◆ ✒️ 3. Font Information

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This game uses a combination of Google Fonts and high-quality OS system fonts to balance visual quality and readability.

■ 🌐 1. Web Fonts (Google Fonts — All languages / Latin characters / UI)

All fonts are available for commercial use under the SIL Open Font License 1.1.

- Cinzel (Title logo, chapter titles, atmospheric decorative text)

Licensed under SIL Open Font License 1.1 (https://openfontlicense.org/)

- Inter (UI text, English body font)

Licensed under SIL Open Font License 1.1 (https://openfontlicense.org/)

- JetBrains Mono (Status bar, numbers, system display)

Licensed under SIL Open Font License 1.1 (https://openfontlicense.org/)

■ 🇯🇵 2. Japanese Version Font Rendering

For kanji, hiragana, and katakana in the Japanese version, high-quality system fonts are applied as fallbacks depending on the user's device, harmonizing with the Web font Latin characters.

- Gothic (UI / Dialogue): `Inter`, `system-ui`, `Hiragino Kaku Gothic ProN`, `Meiryo`, `MS PGothic`

- Mincho (Horror decoration / Title effects): `Cinzel`, `Hiragino Mincho ProN`, `MS PMincho`

■ 🇺🇸 3. English Version Font Rendering

All story text, choices, and UI in the English version are rendered directly using Google Fonts (`Cinzel`, `Inter`, `JetBrains Mono`).

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◆ ⚖️ 4. License & Commercial Terms

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The following are copyright notices for open-source libraries used in this game.

All libraries are used under licenses that permit commercial use.

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・React / React DOM

Released under the MIT License

https://opensource.org/licenses/MIT

・Vite / @vitejs/plugin-react

Released under the MIT License

https://opensource.org/licenses/MIT

・TailwindCSS / @tailwindcss/vite

Released under the MIT License

https://opensource.org/licenses/MIT

・Motion (Framer Motion)

Released under the MIT License

https://opensource.org/licenses/MIT

・Lucide React

Released under the ISC License

https://opensource.org/licenses/ISC

・TypeScript

Released under the Apache License 2.0

https://www.apache.org/licenses/LICENSE-2.0

・esbuild

Released under the MIT License

https://opensource.org/licenses/MIT

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◆ 🎨 5. Asset Generation Credits

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This story is entirely fictional. Any resemblance to real persons, organizations, locations, or events is purely coincidental.

All images, video, music, and audio content in this game were created and edited using generative AI tools.

Due to the nature of AI generation, unintentional similarities to real-world subjects may occur, but no specific individuals or organizations were used as models.

All AI-generated assets included in this work are protected.

Unauthorized reproduction, data extraction, secondary use (incorporating extracted data into your own works), redistribution (re-uploading or sharing online), and use for AI training (including scraping) of any data comprising this work are strictly prohibited.

The copyright of all programs, text, and originally generated/edited assets belongs to the creator.

(Rights to open-source libraries and fonts used in part belong to their respective rights holders.)

■ Content Warning (Flashing Lights & Horror Elements)

This game contains some horror elements and scenes with flashing lights.

Players who are highly sensitive to flashing lights or extremely uncomfortable with horror content should exercise caution.

If you feel unwell at any point during play, please take a break or stop playing.

■ Disclaimer & Recommended Environment

This game is designed for PC play. Mobile devices are not supported.

The creator assumes no responsibility for any damage or inconvenience (including device or browser issues) arising from downloading, installing, or playing this game. Play at your own risk.

■ Generative AI Credits

All image, video, and audio assets used in this work were generated under legitimate paid commercial plan / subscription agreements.

・Category | Tool | Plan

・Images | Google Flow / Nano Banana | Google AI Pro

・Videos | Google Flow / Gemini Omni | Google AI Pro

・Videos | Kling AI | Standard

・BGM | Google Flow Music | Google AI Pro (AI Plus equivalent)

・Sound Effects (SE) | ElevenLabs | Starter

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◆ 📹 6. Streaming & Let's Play Guidelines

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- Streaming / Let's Play videos: You are welcome to stream and monetize gameplay videos.

- Prior approval: Not required. Reporting or notifying the creator is optional.

- Optional request: If possible, please include the game title "FROGMAN -RAINFALL-" in your video description.

- Prohibited uses: Publishing on sites that violate public morals; use for political or religious activities.

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◆ 🛠️ 7. Tech Stack

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- Framework: React + TypeScript

- Build Tool: Vite

- Styling: TailwindCSS v4

- Icons: Lucide React

- Sound: Web Audio API (synthesized ambient sound)

[Credits]
Programming & Development Support: Google Antigravity (AI)

Planning, Production & Assets: BROOT (AI-generated assets are created in compliance with paid commercial licenses.)

This is the very first visual novel game I have created and published. I would be highly grateful if you could play it with a warm and supportive heart!

More information

Published	8 hours ago
Status	Released
Platforms	HTML5
Author	BROOT
Genre	Visual Novel
Tags	AI Generated, Horror, japanese-horror, Multiple Endings, Singleplayer
AI Disclosure	AI Assisted, Code, Graphics, Sounds, Text

FROGMAN -RAINFALL-

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