PLAYISM is proud to announce Million Depth, an action strategy game by Cyber Space Biotape where parallel worlds intersect, is out now!

A two-week 10% OFF launch sale is also now underway! Those who purchase the soundtrack bundle will receive an extra 5% discount. Don't miss this special opportunity to experience Million Depth at a reduced price!

Million Depth Available Now! Demo version earns "Very Positive" Reviews on Steam

The deep-descent Action strategy game Million Depth has officially launched!

In the full version, players will traverse three parallel worlds, uncovering multiple endings as they pursue the game’s true ending. In each world line, not only does fate itself change, but so does everything surrounding Moma, and the true identity of a mysterious figure that is…”you”.

Huge thanks to everyone who played the demo and gave it fantastic reviews! We’re happy to announce that the demo will remain available for play even after the full game’s release.
We’d like to give players the opportunity to experience one of the routes (Alpha Route), with transferable save data to the full version and we felt this is perfect for those who want to get a taste of the adventure before diving deeper.

To celebrate the launch, two new trailers have been released, each showcasing different aspects of the game. The Story Trailer delves into the core of the narrative that spans across parallel worlds, while the Gameplay Trailer highlights the game’s structure, core mechanics, and the unique experience of shifting between different timelines. Be sure to check them out!

Story Trailer：https://youtube.com/shorts/-iIwix3OSDg

■Regarding Streaming/Content Creation for Million Depth!

We’re happy for streamers and content creators to make content of Million Depth!
We’d be incredibly grateful if you could add the Steam Store page link in the description of your videos/streams as it’d really help support the game. For those who are planning on making content of the whole game including the true ending, please be sure to add a spoiler warning in the title and/or descriptions/tags!
We along with the devs are really excited to see everyone’s playthroughs and we can’t wait to share the full game with you!

Steam Store Page: https://store.steampowered.com/app/2555950/Million_Depth/

72 Track Original Soundtrack incl. Theme Song is Available Now!

The Million Depth Original Soundtrack, featuring all 72 tracks, is now available!

In addition to the background  music that brings the game’s intersecting parallel worlds to life, the soundtrack includes the theme song “Re,Future” performed by singer-songwriter VTuber Ririsya. The music video for the song has received high praise from fans both in Japan and abroad, earning over 1000 likes to date. 

A special piano arrangement of “Re,Future” is also included as a bonus track. After completing the game, take a moment to revisit the world of Million Depth and let its music carry you back into its emotional depths.

Music Video: https://www.youtube.com/watch?v=yVxTsDZTMC8
Soundtrack: https://store.steampowered.com/app/4126490/Million_Depth_Soundtrack/

Save Data Transfer from Demo Ver.

Save data from the demo version can be carried over to the full release, though some elements will have certain limitations.

Achievements earned in the Alpha Route of the demo will need to be unlocked again by replaying the corresponding sections in the full version. Additionally, any relics and group parts unlocked using Karma in the demo will remain usable in the full release. However, they will still appear as locked in the collection screen until they are obtained again.

For those who wish to fully complete the game, we invite you to enjoy thoroughly exploring the world in the full release.

What is Million Depth?

A Deep Descent in Search of You

Moma sets off on a journey in search of her friend, who she believes is in the million-floors-deep underground world of Million Depth. However, what awaits is a constantly changing world. The true story behind Million Depth differs between timelines, and Moma's fate too changes with the world around her.

Moma's past decisions have consequences that ripple into the future and even other timelines in unimaginable ways. She will have to piece together fragmented clues from her journey to solve the many mysteries she comes across.

Freeze Time to Strategize

Moma has a "biotope jammer", an incredible device that stops time around her as long as she also stays motionless. It's her key to survival in Million Depth, where all sorts of dangerous creatures lurk in the shadows. Even if she finds herself surrounded by enemies, she can stop them in their tracks to figure out a way to break through.

However, Moma's weapons and shields only have limited durability. During battle, they deteriorate and eventually break. Until they're repaired, Moma becomes completely defenseless, but this is when the biotope jammer comes in clutch. Freeze time, carefully plan your next move, and ensure Moma's survival.

Get Creative with Weapon Crafting

Moma can equip two pieces of equipment, both hand-crafted by combining different types of blocks.

Some blocks can be upgraded by being placed with others of the same type. Use them wisely to craft any weapon, from long-range guns to sturdy shields.
Ultimately, your creativity is what will give you the upper hand.

Barter with Shopkeepers

Throughout Moma's journey, she will encounter several shopkeepers offering crafting blocks, items, and relics that can enhance her abilities.

However, shops in Million Depth don't take traditional payment. Barter with the shopkeepers while keeping a keen eye on the value of your offer and the shopkeepers' mood to get the best deal possible. If it goes well, they might offer you valuable items at bargain prices, but if you get too greedy, you risk upsetting the shopkeeper, who might hike the prices in response.

What's more, the underground world is also home to a strange resource called stockinum, the value of which fluctuates constantly...

Product Information

PLAYISM Game Page　|　Steam Store Page

■Developer： Cyber Space Biotope
■Publisher： PLAYISM
■Genre: 　 Deep-Diving Action Strategy
■Platform: Steam
■Release Date: November 12, 2025
■Languages: Japanese, English, Chinese (Simplified/Traditional)
■MSRP: Base Game: $16.99
Soundtrack: $8.99
※A two-week 10% OFF launch sale is also now underway. Those who purchase the Soundtrack Bundle will receive an extra 5% discount.
■Player Count: 1
© Cyber Space Biotope. All Rights Reserved. Licensed to and published by Active Gaming Media Inc.