Mainu cover art

Mainu

Mainu is a fast-paced action adventure set inside a mysterious 13-floor mall consumed by energy. When Tonu meets a girl named Venera, he learns that a powerful being named Ormatsu has unknowingly infused his…

25 August 2025

Mainu is an arcade developed by Kanmai, released 25 August 2025 on Mac and PC (Microsoft Windows).

Verified Sources: IGDB , Steam

What Mainu is

Mainu is an arcade game developed by Kanmai and released in 2025. It is available on Mac and PC (Microsoft Windows). It runs on Unity.

The premise, in the publisher's words

Tonu, like any other high schooler, has a dream to be an artist — but lately, he has stopped practicing his drawings and stopped believing in himself. One night, while sleeping, he meets a yokai named Ormatsu, the ruler of a realm called Ginga. To keep the realm alive, Ormatsu traps the dreams of people who give up and transforms their souls into dog-like creatures called Mainus. There is only one way to escape this world: solve the Ormatsu Puzzle and defeat him. Ormatsu gives each dreamer a chance to escape by collecting all the Mainus and mastering six elemental powers — Fire, Lightning, Water, Wood, Ice, and Wind — to defeat the fifteen rulers of the realm. Tonu has just eight hours in…
Description from the publisher · source

How it plays

It is played from a side view perspective. Its themes are action and fantasy. It is a single-player game with no multiplayer component.

What it launched against

Mainu launched on 25 August 2025, within three weeks of Hollow Knight: Silksong, Mafia: The Old Country, Metal Gear Solid Delta: Snake Eater and Hell is Us.

Released around the same time: Hollow Knight: Silksong, Mafia: The Old Country, Metal Gear Solid Delta: Snake Eater, Hell is Us.

Screenshots

All media

Quick answers

Mainu — frequently asked questions

When did Mainu come out?
Mainu was released on 25 August 2025 for Mac and PC (Microsoft Windows).

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