Streamer Game "Mousou Shojo" Launches February 8th, Beta Version Now Available

UNCHAIN Inc. (Headquarters: Shibuya, Tokyo; CEO: Win Rei) announces the official release of Mousou Shojo on February 8th, a game featuring the viewer-participation system "THIRD" that allows viewers to directly intervene in games during live streams. Beta version access begins today free of charge.

About the Streamer Game "Mousou Shojo"

Escape Through Delusion. Non-Stop Streaming Survivor

A vertical shooting action game with streaming UI integration that transforms streaming frustrations into delusional monsters to fight back.

While malicious listeners and haters attack as enemies, escape across the screen, use skills to defeat them, and keep your stress level under control!

As irritation levels rise, the game becomes affected, with attacks becoming more vicious and unreasonable.

While this is a shooting game about defeating oncoming enemies, the biggest feature is viewer intervention through the "THIRD" system. The experience of streamers and viewers sharing emotions in real-time, such as viewers deliberately increasing enemies to spice up the stream or lending a helping hand during desperate situations, has garnered significant response.

Title: Mousou Shojo
Platform: Steam®
Genre: Shooting Action
Players: 1 player
Release Date: February 8th, 2026 (Sunday)
Price: Free

Steam Store Page

Streamers Operating Streamers: Non-Stop Battle

About the "THIRD Mode" for Playing with Viewers

"THIRD" evolves traditional "watch-only" streaming into "participatory" experiences where viewers influence the outcome.

1. Viewers Become the "Hand of God" Through "Intervention Actions"

Through THIRD Actions (item purchases), viewers can both "help" and "challenge" the streaming player.

Viewer Intervention Item Examples

<Support (Cooperation) Items>

"HP Up": Drops items that recover the player's HP.
"Speed Up": Increases the player's speed for a certain period.

<Obstruction (Opposition) Items>

"Named Enemy": Summons an enemy with your username.

2. Bi-Directional Communication Where "Who Did It" Is Immediately Clear

The usernames of intervening listeners are displayed in-game as delusional monsters or support effects. This creates live, wrestling-style exchanges unique to intervention games, such as "Hey, Mr. ○○! You said you'd help but don't send in 'Instruction Grandpa' (laugh)!" or "Nice recovery, Mr. ○○! Looks like we can finish without losing to the trolls (ghosts)!", accelerating community excitement.

About the Development Background

The previous intervention game "I'm It" generated significant response immediately after release, trending on X (formerly Twitter) and recording a hit beyond expectations.

However, many users provided feedback that "the intervention system is interesting, but I can't play horror games." In response, this title focuses on "streamers' daily stress" as its theme. To allow more people to easily experience the new culture of "intervention games," this title is provided "completely free".

How to Receive the Beta Version

Please check the following beta version access methods and try playing during this opportunity.

Join the "THIRD Official Discord" (https://discord.gg/4KPxhqmbpZ)
Register as a "THIRD Streamer" (https://live-ctl.zendesk.com/hc/ja/articles/4905046732958)

◦ ※Registration is required as revenue reception will occur.
Beta key distribution via registered email address or Discord

About THIRD

From "spectating" to "participating." "THIRD" is UNCHAIN's proprietary game system that evolves traditional "watch-only" live streaming into "streaming-oriented games" where viewers can directly intervene in games in real-time.

Streamers play games equipped with "THIRD" in their "usual streaming environment," and viewers perform "intervention actions" through THIRD Actions (item purchases), such as:

Increasing enemies (obstruction)
Recovering the player's health (support)
Sending special items

These actions allow viewers to influence game development in real-time. Moving one step beyond traditional "watching only," it creates new excitement where streamers and viewers build streams together through "cooperation and opposition relationships."