MONOWAVE is out now!

MONOWAVE is out now on Steam!
After more than three years of development, we can finally share the full adventure with you. Thank you to everyone who played a demo, stopped by our booth, or followed us along the way.
Meet Mono, a newborn guardian spirit
In this puzzle-platforming adventure, Happiness, Sorrow, Anger and Anxiety each give Mono different abilities. Sing to share those feelings with nearby spirits, then use their reactions to solve puzzles and open new paths.
Across four worlds, you’ll meet four Emotion Spirits, each overwhelmed by one feeling. Help them make room for the others.
Play solo or bring a friend
The full adventure is playable solo or in local two-player co-op. One player controls Mono, while the other flies alongside them as Prism, sharing emotions and helping with puzzles.
Local co-op: Play with two controllers, or a keyboard and a controller.
Steam Remote Play Together: One player owns and runs the game, then invites a friend from their Steam friends list. Your friend does not need a separate copy. A stable internet connection is recommended.
Thank you for being here
We’ve met so many of you at events and through the demos. Today, we get to send Mono out into the world with you.
If you’d like to share a moment from your adventure, we’d love to see it. You can also leave questions or report issues in the Steam discussions.
https://store.steampowered.com/app/2680440/MONOWAVE/?utm_source=steam&utm_medium=o&utm_campaign=r01r4
Take the music with you
The MONOWAVE Original Soundtrack brings together 38 tracks, from the main theme to the music of the four Emotion Spirits. Listen again to the moments you remember, even after you leave the game.
https://store.steampowered.com/app/5234700/?utm_source=steam&utm_medium=o&utm_campaign=r01r4
Join us on Discord
Share screenshots, talk about your favorite spirits, or find someone to play with in our Discord.
Join the MONOWAVE Discord
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Studio BBB
This announcement was originally published by Studio BBB Inc. on Steam on Sep 16, 2026.
Open the original on Steam