MillionCube Challenges Up to 30 Players to Escape a Million-Room Maze
Japanese indie game MillionCube challenges up to 30 players to navigate four increasingly enormous mazes, culminating in one million rooms.
Key Takeaways
- MillionCube is an upcoming maze exploration game from Japanese indie developer PushForward, scheduled for October 2026 on Steam.
- Players can explore alone or cooperate online with up to 30 people, using markings on doors and environmental clues to navigate the maze.
- The game advertises a maze containing up to one million rooms, with English interface support listed on Steam.
A maze with one million rooms sounds like a nightmare to navigate. Japanese indie developer PushForward is turning that idea into a multiplayer game with MillionCube, an upcoming PC title where up to 30 players can search for the correct path together.
The game appeared on Steam on October 10, 2026, with its release announcement following on October 11. Its premise is straightforward: explore an enormous network of interconnected rooms, study the clues around each doorway, and find your way to the goal.
MillionCube is currently scheduled to launch on Steam in October 2026, although PushForward has not announced an exact release date.
Four mazes, from 1,000 rooms to one million
PushForward has designed MillionCube around four stages that increase dramatically in size. Each stage has one goal room, with the developer estimating that the later challenges could take hours or even days to complete.
The opening Backrooms stage uses three-digit door numbers to introduce the navigation system. The Aquarium increases the scale to 17,576 rooms, using three-letter identifiers and differences in the fish on display as clues.
Cyberpunk expands the maze to 373,248 rooms, with three-character Katakana identifiers and a neon-lit environment. The developer also describes alternative character displays, including Kanji and Hangul.
The final stage, Infinite Corridors, features one million rooms arranged in a distorted environment inspired by Japanese architecture. Its six-digit room identifiers become another part of the navigation challenge.
The completion estimates are PushForward's projections, not measured averages from released gameplay.
Door markings and scenery point toward the exit
Finding the correct room requires paying attention to more than the number above a doorway.
According to PushForward, door markings and environmental details provide clues about the goal's location. As players approach the correct destination, those details begin to offer stronger indications that they are on the right path.
In the Aquarium, that might mean observing the fish in different rooms. Other stages use numerical or written identifiers and changes in the surrounding scenery.
The objective remains the same throughout: locate the one goal room hidden within a much larger maze.
The developer describes the premise in its official Steam listing:
"Find the one correct room among up to a million rooms."
The game's emphasis is on observation and exploration, with relatively little action compared with traditional adventure games.
Thirty players can explore together or split up
MillionCube supports solo play and online multiplayer for up to 30 players.
Groups can search together or divide their efforts across different routes. PushForward has also included items designed to help teammates coordinate.
One item allows players to teleport to another player's location. Another helps identify which teammate is closest to the goal. Treasure chests can provide useful discoveries, although the developer warns that some may contain traps.
Players control customizable robot avatars called Cube. Their body colors, facial expressions, and accessories can be changed, giving participants a way to distinguish themselves during multiplayer sessions.
A slot machine system is also available in the lobby and after reaching a goal. According to the announcement, successful spins may award items that help during exploration.
For streamers, PushForward has included a dedicated mode that hides player names and chat messages and masks inappropriate room names. Its published streaming guidelines permit gameplay broadcasts and monetized videos without requiring individual permission.
MillionCube targets a late October Steam release
PushForward plans to release MillionCube for Windows PC through Steam in late October 2026.
The developer's announcement lists a Japanese price of ¥880 including tax. Steam currently displays the broader October 2026 release window, without a specific day.
PushForward notes that the timing could change depending on Steam's review process. The game is not yet available to purchase, but players can add it to their wishlists.
The Steam listing includes English and Japanese interface support, along with several additional languages. It also discloses the use of generative AI assistance in creating some game assets. According to the developer's disclosure, those assets were reviewed and edited by the team.
The official Steam page includes screenshots and an announcement trailer showing the game's different environments.
Players can wishlist MillionCube through its Steam store page ahead of its planned October launch.
