Introducing Sand Castle at Dusk — A sad summer love story that begins with a solo trip

HOW TO PLAY

Controls and goals

How to operate: Advance the text with left click or Enter/Space/Z and select with arrow keys. Open save and settings with Esc, X, right click, or the menu button on the top right.
Goal: Follow the conversations and choices you make while traveling and see how your love with Natsuki ends.

ABOUT THE GAME

Follow your travel encounters with options

``Twilight Sand Castle'' is a love adventure in which the main character, bored with his daily life, goes on a solo trip and meets a woman named Natsuki. As you read the text and choose options, follow the story of how a summer encounter turns into love.

GAMEPLAY

From the usual room to the train

After leaving the room, the protagonist heads off on a journey by train. You can read the background and the text at the bottom of the screen, and then use the menu button on the top right to go to save and settings.

The beginning of Twilight Sand Castle.
The message ``I don't have any plans.'' is displayed with the main character's room in the background, and there is a menu button in the upper right corner. — Inside the train at the beginning of the journey through Sand Castle at Dusk. Below the background of the car, a text depicting commuters on summer vacation is displayed.

Actual play shooting: Detour Playlist Editorial Department / ©2016 Sofaiafactory/HetareRuisu / Background material: Toriyaka, Masasuke Aya (Kimagure After), ©2001 ENTERBRAIN, INC. / Tools and attached materials: ©2015 KADOKAWA CORPORATION./YOJI OJIMA

Read summer travel and love

Depicts his relationship with Natsuki, whom he meets while traveling alone. This is a story that begins with an opportunity to leave everyday life and follows the fate of a summer love.

You can redo your selection

Progress through conversation and simple choices. There is a function that allows you to go back if you make a wrong choice, and you can proceed with the story while checking the branching.

Divided into two endings

The official guide provides two types of endings, excluding the bad ending. There is room to compare how the stories end.

PLAY NOTES

Play notes

Time/Language: The official guideline is approximately 1 hour. The text and choices are in Japanese, and the focus is on reading the story.
Fees/Startup: The browser version is free. Start from "Play the browser version" on the distribution page and set the frame rate etc. for the first time. The officially recommended browser is Chrome, and a communication connection is required.
Save: You can save manually from the menu. At the specified point, it will be auto-saved to file 40. The browser version is saved within the browser, so be careful when deleting the data.

PLAY THE GAME

Leave the room,
Let's start our summer trip.

Play Sand Castle at Dusk for free on the official website

The official work page and official web version were confirmed on September 22, 2026. The two published images were taken by the editorial department on the official web version. Sources: Author's official work page, Author official distribution/work introduction, Official ReadMe/Operation and Distribution Guide

STREAMING INFO

Streaming and video uploads

Streaming allowedMonetization permission unconfirmed

The author welcomes live videos and live streaming, and advises that no prior or subsequent contact is required. It is not clear whether it will be monetized or not.

Checked: September 22, 2026 · Official sources: Author's official ReadMe/Video distribution guide

READER COMMENTS

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