TamagawaSoft’s handcrafted 2D action platformer is coming to Steam first on January 19, 2027, with Nintendo Switch planned later and no Switch date yet.
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Store links: isekizima: Ruins and Tails Journey on Steam
A January Steam launch, with Switch still waiting its turn
TamagawaSoft has set the Isekizima: Ruins and Tails Journey release date for January 19, 2027 on Steam for Windows PC, while the Nintendo Switch version remains planned for a later date with no confirmed timing. That split is the useful detail for indie release trackers: the game now has a firm PC launch day, but Isekizima Switch plans are still undated.
Gematsu, GamesBeat, Noisy Pixel, VGChartz, HappyGamer, and GamersHeroes all reported the January 19 Steam date from TamagawaSoft’s announcement, with Gematsu and VGChartz listing the PC price at $17.99 / ¥2,250. HappyGamer also reported CNY 69 as another listed regional price. Noisy Pixel reported that the game will launch at $17.99 on Steam and that a Nintendo Switch version is planned later.
That makes Isekizima one of the early 2D platformer January 2027 releases to keep an eye on, especially for players who follow smaller action platformers before they are swept into the wider release calendar. The immediate question is whether to play on PC at launch or wait for Nintendo’s platform. For now, only the Steam version has a date.
The hook is a handcrafted island built around a nekomata’s journey
Isekizima: Ruins and Tails Journey follows Kijino, described by TamagawaSoft and multiple reports as a nekomata, a two-tailed cat spirit from Japanese folklore. The setup sends her through an island of ancient ruins reclaimed by forest, moving from quiet woodland paths into caves and ruins beneath the island.
The game is being presented as a handcrafted 2D action platformer rather than a procedural or systems-first project. GamersHeroes called it a handcrafted 2D platformer, while GamesBeat described the game as TamagawaSoft’s handcrafted 2D platformer. The difference matters because the reported design pitch leans on scene-by-scene escalation: new environments, new traversal ideas, and music tailored to each area.
TamagawaSoft’s own comment, quoted by Gematsu, GamersHeroes, and Noisy Pixel, frames the project around preserving the excitement of a game’s first level through to the ending. The developer said the forests and ruins were built one scene at a time, with stages designed to introduce new ways to play as the journey unfolds. That is a strong platformer promise, because the genre lives or dies on whether its verbs keep evolving after the opening hour.
One developer, eight years, and a platformer shaped by pacing
HappyGamer reported that TamagawaSoft is the studio of a single developer based in Japan, with nearly 20 years of game development experience, and that Isekizima took eight years to make. The same report says the game is self-published. GamersHeroes also shared a post from TamagawaSoft in which the developer said development took eight years before the January 2027 Steam release was finally set.
That production context gives the January date a different texture than a routine release announcement. A solo-developed platformer can be intensely personal, but it also carries risk: animation polish, checkpoint tuning, combat readability, and late-game variety all sit on a very small team’s shoulders. The materials released so far point to a game that has tried to solve that by building around distinct stages rather than a single repeated loop.
Reported details support that reading. Gematsu’s overview from TamagawaSoft says the journey spans more than 30 stages. Noisy Pixel reported the soundtrack contains 43 folk-inspired compositions, while other reports describe more than 40 tracks. Those numbers suggest a game structured around changing scenery and mood, with music treated as part of the level identity rather than background filler.
Combat and movement are doing the heavy lifting
The Steam-facing pitch reported by Gematsu, GamesBeat, Nintendo Everything, and others describes a platformer with both action combat and traversal gadgets. Kijino fights skeleton pirates, slimy monsters, and ghostly foes using punch and kick combos that leave claw-like flashes in the air. Landing hits feeds the flames in her two tails, strengthening a special attack that can hit multiple enemies at once.
On the movement side, the reported toolkit includes running, jumping, dashing, swinging across gaps with a grappling wire, riding minecarts into caves, and taking control of a golem. GamersHeroes also highlighted dashing and triple jumping as part of the 2D platforming flow. Those details point toward a game interested in switching rhythm between precision movement, enemy pressure, and set-piece traversal.
The big design question is how tightly those ingredients fit together. The sources describe controls that are easy to learn and immediate retries from the last checkpoint after mistakes. That is encouraging for a platformer built around frequent novelty, because new mechanics are less punishing when the reset is quick. It also suggests TamagawaSoft is aiming for approachable momentum first, with optional difficulty pressure layered on top.
Challenge options, achievements, and completion estimates give it replay shape
Noisy Pixel reported that the main story takes approximately 10 hours to complete, with full completion around 20 hours. That estimate is especially useful for players weighing a $17.99 indie platformer purchase, because it places Isekizima in the space between compact evening game and long-form exploration project.
Challenge is being handled through optional settings rather than a single fixed difficulty identity. Nintendo Everything and Gematsu both reported that newcomers can progress steadily, while experienced players can try three optional challenge settings. Examples given in the announcements include fiercer enemy attacks and capping maximum HP at its starting value.
Steam achievements appear to be used as another layer of replay design. Gematsu and GamesBeat reported 47 Steam achievements, including objectives that encourage different approaches, such as reaching a goal without defeating any enemies. Noisy Pixel also reported 47 Steam achievements and specifically noted alternate approaches to stages. For platformer players who enjoy routing and self-imposed constraints, that detail is more meaningful than a simple collectibles count.
The game also includes hidden treasures and collectible outfits, according to Gematsu, GamesBeat, Nintendo Everything, and Noisy Pixel. Those are familiar indie platformer rewards, but in this case they fit the reported structure: a treasure hunt across a ruin-filled island, with visual customization as an extra reason to poke into corners.
Music is central to the sell, and a Supporter Pack lands day one
TamagawaSoft’s announcement repeatedly ties the game’s identity to its soundtrack. Gematsu’s overview says music was composed to match the scenery of each area, and the developer comment quoted across reports says the composer received landscape material while areas were still taking shape. The pitch is that the music gives the island a voice of its own.
Noisy Pixel reported that the soundtrack contains 43 folk-inspired compositions, while Gematsu describes the Supporter Pack as including a complete original soundtrack with 43 MP3 tracks. GamersHeroes reported that the release date trailer features vocals by Erum Nagi and music by colt. For players drawn to smaller platformers because they feel authored and specific, the soundtrack focus is a real part of the game’s appeal.
The Supporter Pack will launch on Steam alongside the base game on January 19, 2027, according to Gematsu and GamesBeat. It includes the 43-track soundtrack in MP3 format, a digital artbook with 184 images in JPG / PNG formats, and one bonus outfit. Gematsu and GamesBeat both report that the artbook contains concept art, character designs, rough sketches, guest artwork, story illustrations, and related material.
That pack is separate from the base game in the reporting provided. Pricing for the Supporter Pack was not included in the source material, so buyers should check the Steam page at launch before assuming a bundle cost.
Should you wishlist on Steam or wait for Isekizima Switch?
If you want the earliest confirmed version, Isekizima: Ruins and Tails Journey Steam is the only dated release. The Steam launch is set for January 19, 2027 on Windows PC, with the base game priced at $17.99 in the reporting provided. Noisy Pixel and GamersHeroes both reported that a demo is available on Steam, with Noisy Pixel saying it contains one to two hours of gameplay. GamersHeroes also cited TamagawaSoft’s post saying the demo offers more than an hour of play and supports Japanese, English, Simplified Chinese, Traditional Chinese, Brazilian Portuguese, and Russian.
If you prefer handheld or TV play on Nintendo hardware, waiting may make sense, but only with patience. Nintendo Everything reported that TamagawaSoft confirmed Isekizima for Nintendo Switch and that release timing for that version will be shared later. Gematsu, GamesBeat, Noisy Pixel, HappyGamer, and VGChartz all describe the Switch version as planned for a later date. None of the provided sources confirm a Switch price, release window, physical edition, or feature differences.
For indie platformer fans, the practical path is simple: wishlist or try the Steam demo now if the PC version is an option, then wait for TamagawaSoft to provide firmer Isekizima Switch details if Nintendo hardware is your preferred home for precision platforming. The confirmed pitch is promising and specific: a solo-developed, folklore-tinted 2D action platformer with over 30 stages, quick checkpoint retries, optional challenge settings, collectible outfits, and a soundtrack built closely around its forest-and-ruins setting. The remaining unknown is how soon Switch players will get to follow Kijino onto the island.