Tantei Bokumetsu SWITCH is an Adventure-Simulation title developed and published by Nippon Ichi Software, released in Japan on May 27, 2021. This page covers the base game in both NSP and XCI formats plus the Update 1.0.1 patch, giving you a complete package for a Japanese-region Nintendo Switch setup. If you enjoy narrative-driven detective games with simulation mechanics, this release is built around exactly that combination.

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What Tantei Bokumetsu Offers

Tantei Bokumetsu blends investigation work with simulation elements. You follow a detective storyline, gather clues, and work through scenarios that reward careful observation rather than fast reflexes. The game ships in Japanese only, so reading comprehension of Japanese is required to follow the plot and dialogue. That language lock is the single most important thing to know before you download — the files here do not include an English patch, and none is bundled.

The title sits comfortably alongside other Nippon Ichi Software releases, which are known for distinctive art direction and character-driven writing. If you want a broader look at the publisher's catalog on Switch, the Earnest Evans Collection Switch NSP [Update] (eShop) is another release worth comparing for genre and file structure.

Technical Specifications

Key Features

• Detective adventure gameplay — investigate scenes, follow leads, and progress through a story-driven campaign.
• Simulation mechanics — management and decision elements sit alongside the narrative, giving the game a slower, more methodical pace.
• Two file formats — choose NSP (1.7GB) for a standard install or XCI (2GB) if you prefer a cartridge-style image.
• Update 1.0.1 included — the 51MB patch is provided separately as an NSP file so you can apply it after installing the base game.
• Japanese region release — Title ID 0100CBA014014000, matching the original eShop version.
• Firmware requirement — the game needs system firmware v11.0.1 or newer.

Pros & Cons

• Pros: Complete package with base game and update; multiple download mirrors for both NSP and XCI; small update file that is quick to apply; no password on any game files.
• Cons: Japanese language only with no English option; requires custom firmware or a jailbroken console to install; the XCI file is larger than the NSP; the update is distributed separately, so you need to install it in the right order.

Version Freshness and Installation Guidance

The 1.0.1 patch (v65536) is a small 51MB NSP update, which tells you it is a maintenance-style release rather than a content expansion. Install the base game first, then apply the update on top. If you skip that order, the console may not recognize the patch correctly. The base game requires firmware v11.0.1 or newer, so check your system version before you begin.

For extracting the RAR archives, use a current version of WinRAR or 7-Zip. Older extraction tools sometimes prompt for a password even when none exists — every game file on this page is password-free. If an archive reports damage or a CRC error, re-download that part rather than trying to repair it. Broken or dead links can be reported through the reupload request process.

NSP files install through a title installer such as Goldleaf, and XCI files can be mounted or installed depending on your setup. Some Switch titles also run on PC through emulators like YUZU or Ryujinx, though compatibility varies by game and is not guaranteed for this title.

Download Links

Base Game — NSP (1.7GB) | XCI (2GB)

NSP: MegaUp | TusFiles | LetsUpload | Mega | 1Fichier

XCI: MegaUp | LetsUpload | MediaFire | Mega | 1Fichier

Update 1.0.1 (v65536) — JPN NSP (51MB): ZippyShare | TusFiles | LetsUpload | Mega | 1Fichier

Who This Release Is For

This download suits players who already run a modified Switch and want the Japanese version of Tantei Bokumetsu with the latest patch applied. It is not a good fit if you need English text or if your console is on stock firmware. If you are building a library of Nippon Ichi titles, you can pair this with other Switch NSP releases such as Scurge: Hive Switch NSP (eShop) for variety in genre.

If you like this game, consider buying it to support the developers.

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Recommended For You: If you enjoy this game, also check out Arcade Archives: Route 16 Switch NSP (eShop) and Arcade Archives: Raiders 5 Switch NSP (eShop) and Final Fantasy Resonance Switch NSP [DLC/Update] (eShop) [US/AS] [Full Game] for more top-rated gameplay.

Looking for more top titles? Explore our complete rankings in the Best Nintendo Switch Games guide.

Frequently Asked Questions & Setup Guide