28天半衰期: Summoning Ritual Unleashes Interdimensional Exchange Students

8/21/2026, 12:49:20 AM

Release date: 8/1/2026

Tags: #rpg #visual-novel #2d-platformer #2d #anime #cartoon #comedy #emotional

User Reviews

Score: 100%3 user reviews
Review Count: 3 reviews
Fetched At: 8/21/2026, 12:49:20 AM

Reference prices

Japan

¥ 655 (JPY)

Steam JP

$4.99 (USD)

Steam Global

Live Store Snapshot

Body text may reflect the state at publication time. For the latest sale, price, and review changes, prioritize the live price panel, review panel, and the Steam store listing.

Japan Price: ¥ 655
Global Price: $4.99
Price in Your Region: ¥ 655Prices as Steam lists them per country. What you are actually charged depends on your Steam account settings.Regional prices checked: 30 Aug 2026
Sale Status: Regular pricing
Price Checked At: 8/25/2026, 3:21:31 AM

The price snapshot and review snapshot differ by about 99 hours. Because they are not always refreshed at the same time, confirm the latest Steam listing before making a purchase decision.

Key highlight

Embark on a surreal RPG adventure in "28天半衰期" where a biology thesis turns into an interdimensional summoning ritual, unleashing six otherworldly exchange students. Developed by Singularity Studio, this single-player tit

Who this is for

A narrative-driven RPG with a unique premise and unpredictable story twists. Recommended for players who enjoy being drawn into bizarre, experiment-gone-wrong scenarios.

🖥️ Hardware Guide for Comfortable Play

Based on the game's recommended specs, showing a comfortable performance target and example parts (PassMark reference)

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CPU

Game's recommended spec

Intel Core i3 or better

Comfortable play target

9,100 pts(~130% above spec of 7,000 pts)

Parts near this range

Mediatek MT8798Z-CNZA9,110 pts Intel Core i7-8809G @ 3.10GHz9,081 pts AMD Ryzen 5 PRO 3400G9,126 pts

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GPU

Game's recommended spec

Dedicated GPU with OpenGL 3.0 support and 1 GB VRAM

No PassMark data — please check the manufacturer's site

* Scores are reference values. Actual performance varies by in-game settings, resolution, and system environment.

Build a PC to match this performance → BTO Guide

Details

Overview

Prepare for a bizarre turn of events in "28天半衰期" (Half-Life of 28 Days), a unique RPG experience developed and published by Singularity Studio. What begins as a seemingly mundane biology thesis for senior student Xiao Ming quickly escalates into an interdimensional incident.

Tasked with observing classified fungal samples, Xiao Ming's research is dramatically interrupted by his childhood friend, Hua Jia, whose accidental ammonia spill triggers an extraordinary summoning ritual.

Overview

This isn't your typical lab accident; it's a full-blown summoning ritual. Xiao Ming, a biology major with a penchant for survivalism, finds his thesis work on Russian fungal samples turned upside down when a chaotic accident involving industrial ammonia and a bag of peaches results in six girls emerging from a petri dish.

These aren't ordinary girls; they bear jade boarding passes and official university documents, introducing themselves as this year's interdimensional exchange students. Players will navigate this surreal scenario, blending elements of RPG gameplay with a compelling narrative.

Highlights

Developed and published by Singularity Studio, "28天半衰期" offers a single-player RPG experience.
The game features a unique premise involving a summoning ritual, interdimensional exchange students, and a biology thesis gone awry.
Released on August 1, 2026, it supports Steam Cloud and Family Sharing, with content suitable for all ages.

Who It's For

"28天半衰期" is for players who enjoy narrative-driven RPGs with a comedic and emotional twist. Fans of visual novels and 2D platformers might also find the blend of genres appealing.

If you're looking for a story that starts with a science experiment and ends with otherworldly visitors, this game is worth exploring.