Kaiju No. 8 THE GAME brings the manga and anime world to mobile as a turn-based battle game. Players assemble squads of Japan Anti-Kaiju Defense Force officers, using unique skills to expose kaiju cores and deliver finishing blows, with 3D graphics recreating familiar fights.
The game is developed and operated by Akatsuki Games in cooperation with Toho and Production I.G, and launched on August 31, 2025 on iOS and Android.

Quick Facts
- Release: August 31, 2025 (iOS, Android); Steam September 30, 2025
- Developer: Akatsuki Games in cooperation with Toho and Production I.G
- Platforms: iOS, Android, Steam; no console release
- Model: Free-to-play with optional in-app purchases
- Genre: Turn-based combat with officer squads
Story
The game follows the world of the original Kaiju No. 8, where giant kaiju appear and the Defense Force fights them. Familiar characters and officers from the manga and anime are added as playable roster members.
It recreates the source world with advanced 3D graphics for spectacular kaiju battles, and adds anime tie-in content such as Reno Ichikawa's Numbers Weapon 6.
Behind The Scenes
Kaiju No. 8 THE GAME is developed and operated by Akatsuki Games, with planning and production involving Toho and Production I.G. It launched globally on August 31, 2025 on iOS and Android with a free 5-star character and 20 gacha pulls.
The Steam version was scheduled for September 30, 2025, and the game will not release on Xbox, PlayStation or Nintendo consoles.
Experience
Turn-based combat
Players assemble their favorite officers and use each one's unique skills to expose kaiju cores and then deliver a finishing blow. Each officer can be customized with weapons and skills, offering varied playstyles, and the control system is described as intuitive.

Visuals and anime tie-ins
3D graphics recreate the kaiju fights of the source. The game ties into the anime through content such as Reno Ichikawa's Numbers Weapon 6, keeping the game world close to the adaptation.
Live-service model
The game is free with optional purchases, launching with a free 5-star character and 20 gacha pulls per the developer's announcement. Progression follows a live-service approach, suited to events and roadmap updates.
Strengths
- Faithful to the source with many familiar characters
- Approachable turn-based combat with officer customization
- 3D graphics recreate spectacular kaiju battles
- Anime tie-ins create fresh content
Weaknesses
- No console release
- A mobile gacha game with a familiar combat loop
- Solo content is limited in OtaHub's view
What Critics Say
There is no aggregate critic score for the game yet. Public information centers on the worldwide launch on August 31, 2025 with a free 5-star character and 20 gacha pulls, the Steam release on September 30, 2025 and anime tie-in content.
OtaHub assesses the game on design, direction and fidelity to the source, so the score reflects an editorial judgment rather than critical consensus.
Who Is It For
For Kaiju No. 8 fans who want to play with familiar characters and those who like turn-based mobile games. If you seek tactical depth or rich solo content, the game may not be enough.
OtaHub Score
Verdict
Kaiju No. 8 THE GAME is a faithful, easy and good-looking mobile adaptation suited to fans of the source. OtaHub scores it 8.5/10.
FAQ
Is the game free?
Yes, free-to-play with optional in-app purchases.
Is there a Steam version?
Yes, the Steam version on September 30, 2025.
What is the gameplay?
Turn-based combat, assembling Defense Force officers and exposing kaiju cores.