PLAYISM and Cyber Space Biotope announced a free demo for side-scrolling action strategy game Million Depth is now available for PC via Steam. The Million Depth demo features one of the game’s three main routes.

Moreover, the Million Depth demo will be playable at Tokyo Game Show 2025, which runs from September 25 to 28 at the Makuhari Messe in Chiba, Japan. Players who visit the PLAYISM booth can earn an exclusive double-sided A3-sized mini poster as a play bonus. In addition, fans can expect a special stage event for Million Depth with mini live performance by VTuber Ririsya and a behind-the-scenes development talk with developer αPop.

Million Depth launches on November 12 with English, Japanese, Traditional Chinese, and Simplified Chinese language options. Lastly, here’s an overview of Million Depth, via the game’s official Steam page: 

About Million Depth

Million Depth is a “deep-diving action strategy game” where Moma, a human girl from outer space, visits Earth to find her only friend, and dives into the million-floor deep underground world known as Naraka Akasha.

As Moma, players will have to design and craft their own original weapons and engage in strategic time-freezing battles to survive the hostile environment of Naraka Akasha in order to reach the bottom and uncover the true identity of Moma’s elusive friend.

To Moma, left drifting all alone in space, messaging her Earth friend was the only thing that kept her going.
After all of her dearest crewmates died from a virus, the only thing to do was the daily aptitude test.
But as long as Moma could imagine the scenery of Earth as described by her friend, she managed to live through the boredom and solitude of life on the ship.

“This will be my last message. I’m sorry. Thank you.”

Her friend never sent another message, but Moma knows where they are—a million-floor deep abyss known as Naraka Akasha, the only place on Earth fit for human survival.
Even though she has no idea what they look like, Moma decides to dive into the underground world in search of her only friend…

Strategically Craft Your Own Weapons and Shields

Million Depth has a crafting system where you can freely combine blocks to build your very own original weapons and shields. Every creation has different offensive and defensive abilities depending on its shape and materials used, and combining the same type of block can create parts that have special effects. Editing your weapons and shields and working towards the best creations for your playstyle through trial and error only gets more enjoyable as the going gets tougher.

Mind-Boggling Time-Freezing Battles

When Moma moves, so does the enemy, but when Moma stops, the enemy stops too. In this time-freezing battle system, you will engage in hectic, overwhelming battles… one physical step at a time. Every enemy attack and the power of each attack is clearly shown on-screen, which means you can take your time to analyze the situation and deal with them one by one. The key to winning is using your brain every step of the way to make the best decisions.

Deep-Diving Exploration

Naraka Akasha is very, very deep, and floors can either be completely empty or swarming with dangerous creatures. Scanning the upcoming areas is crucial to effective exploration, and by doing so you can choose between a wide variety of floors. Will you face off against hostile creatures, trade at a shop, expand your crafting abilities, recover some health, or gather much-needed resources? Dive deeper and deeper into the abyss and aim for floors of civilization, locations strongly connected to the secrets of the story.

What Awaits at the Bottom?

Depending on what floors you visit as well as other criteria, you will reach one of multiple story endings. What’s more, over multiple playthroughs, NPCs will act differently, and you might even be able to affect Momas from different worlds…