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TOKYO WALLED CITY turns a sealed cyberpunk district into an immersive-sim playground
TOKYO WALLED CITY is interested in the useful parts of a cyberpunk city: the vent you can crawl through, the rooftop above a guarded street, the camera waiting to be hacked and the dark corner that lets you avoid a fight entirely. GRIM RONIN has revealed its first game as a first-person immersive sim built around exactly that kind of improvisation.
By Kader TOKYO WALLED CITY 
Neo-Tokyo is built vertically
Players take the role of mercenary Reiko Kimura, trapped inside a mysterious walled-off section of Neo-Tokyo. GRIM RONIN describes the game as a retro-cyberpunk stealth-action immersive sim with survival-horror and RPG elements.
Its city is designed as a handcrafted vertical space rather than a sequence of flat combat arenas. Abandoned markets, residential blocks, neon alleys and slums are joined by rooftops and hidden passages, giving players different ways to move through the district and approach danger.
The toolset is similarly flexible. Reiko can climb, hide, peek, hack and throw objects, while weapons range from silent pistols and blades to improvised gadgets, traps and grappling equipment. Enemies include gangs, augmented opponents and androids.
Stealth is supported by systems for visibility and noise propagation. That means remaining unseen is only half the problem: moving carelessly can reveal Reiko through sound even when she is physically out of sight.
Early Access is planned, but not dated
The important limitation on the announcement is timing. TOKYO WALLED CITY is not currently available on Steam, and its store page lists the release date as “To be announced.” GRIM RONIN intends to launch it through Early Access, but has not announced a specific Early Access date.
Once that phase begins, the studio expects it to last roughly 18 to 24 months, depending on development progress and community feedback. Planned additions include more districts and locations alongside new weapons, enemies, implants and mechanics.
GRIM RONIN says the initial Early Access version is intended to contain one fully realized area with the core stealth, survival and combat systems in place. Balance changes, bug fixes and broader mechanical refinement are then expected throughout development.
The interesting promise is interaction, not just atmosphere
TOKYO WALLED CITY has an immediately recognizable cyberpunk vocabulary, but its pitch depends less on neon signs than on what players are allowed to do underneath them. The environment is supposed to be climbed, bypassed, hacked and used as part of the solution.
That distinction matters for an immersive sim. A convincing city is useful; a city that lets the player notice an unexpected route and actually take it is much harder to build. GRIM RONIN is promising the latter, while sensibly leaving one detail unresolved for now: there is still no confirmed date for when its Early Access experiment will begin.