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Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Kaiju No. 8: The Game was first announced on June 15, 2024, alongside its debut trailer and key visual. The project has since launched: the overall service began on August 31, 2025 (UTC), while Steam lists September 30, 2025 as the PC release date. It is a free-to-play turn-based battle RPG for iOS, Android and Windows PC via Steam, with in-game purchases.
What is Kaiju No. 8: The Game?
KAIJU NO. 8 THE GAME is the official game adaptation of the Kaiju No. 8 franchise. Akatsuki Games develops, operates and publishes it, with TOHO and Production I.G credited for cooperation. The June 2024 announcement initially presented the project under a tentative title; the released game uses KAIJU NO. 8 THE GAME. The anime’s official site announced the project on June 15, 2024 and said its first trailer and key visual were released at the same time.
The adaptation retells Kafka Hibino’s story and adds original narrative content. The anime itself is based on Naoya Matsumoto’s manga, so the game sits within an adaptation chain rather than replacing the source material.
When did the game come out?
The dates differ by platform context. Akatsuki Games announced an August 31, 2025 (Japan Standard Time) release date, and the official game notice records the start of service at 2025-08-31T01:00:00Z. Steam, separately, lists September 30, 2025 as the Windows version’s release date. These describe the broader service start and the Steam listing date, respectively.
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The official game notice reports that worldwide pre-registrations exceeded one million. That is a launch milestone, not a player-count figure. The official notice records the service start and milestone.
How does the gameplay work?
The developer describes the game as a turn-based Kaiju-slaying battle RPG. Players choose skills for Defense Force officers and can unleash ultimate attacks when a Kaiju’s core is exposed. The April 2025 announcement also highlighted cinematic ultimate moves and detailed Kaiju models; those were promotional descriptions, not independent performance or review findings.
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The Steam description says the game retells the anime’s story and includes exclusive original narratives. Its own summary of combat calls it an “intuitive turn-based combat system, packed with strategic depth.” Akatsuki Games’ April 2025 announcement provided the gameplay overview and described development as ongoing at that time; the game has since launched. The Steam page has the current product description.
Is Kaiju No. 8: The Game free to play?
Yes. Akatsuki Games describes it as free-to-play with in-game purchases, and Steam lists the PC version as free-to-play. Free access to download and begin playing does not mean every item or feature is necessarily free; the sources establish that purchases are available but do not specify their full contents here.
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What platforms is it on?
The announced platforms are iOS, Android and Steam for Windows PC. Akatsuki Games’ April 2025 global pre-registration announcement listed Japanese, English, Traditional Chinese, Simplified Chinese, Korean and French. Availability can vary by region and storefront, so check the relevant store for the current listing in your country. The developer’s announcement lists platforms and supported languages.
Windows PC requirements listed by Steam
Steam lists these minimum requirements and graphics recommendations for its PC version. Store requirements can change, so consult the Steam listing for the latest details before installing.
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| Category | Minimum listed | Recommended listed |
|---|---|---|
| Operating system | Windows 10/11 64-bit | Not stated on the Steam listing |
| Memory | 8 GB RAM | Not stated on the Steam listing |
| Storage | 20 GB available space | Not stated on the Steam listing |
| Graphics | GeForce GTX 1650 or higher | GeForce GTX 1070 or higher |
Is the manga required to understand the game?
No requirement to read the manga is established. The game retells the anime’s story and adds original material, while the anime is based on Naoya Matsumoto’s manga. Reading the manga—starting with volume 1—is an optional way to explore the source story, not a prerequisite for playing.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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