Sayonara! HakoBoy! is the third and final chapter in Hal Laboratory's BoxBoy trilogy, and it arrived on the Nintendo 3DS on February 2, 2017. This page gives you the decrypted .3DS ROM (Japanese region, 131MB) that you can load in the Citra 3DS emulator on Windows. If you enjoy tight puzzle-platformers built around a single clever mechanic, this is the send-off the series deserved.

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Technical Specifications

What Sayonara! HakoBoy! Actually Is

Qbby, the little white cube hero, returns for one last adventure. The premise stays refreshingly simple: you create chains of boxes from your own body to bridge gaps, climb walls, block hazards, and reach the goal. Every stage is a compact puzzle where your box budget is limited, so the challenge comes from planning the shape and order of your boxes rather than reflexes alone.

Hal Laboratory uses that one mechanic to explore a surprising range of ideas across the campaign. Early levels teach you the basics in a few moves, then the game layers on new wrinkles — boxes that behave differently, timers, moving hazards, and multi-step routes that force you to think two or three moves ahead. Because each stage is short, you can retry quickly and experiment without frustration.

This third entry also leans harder into story than its predecessors. The title itself — Sayonara, meaning goodbye — signals a farewell arc for Qbby, and the game closes out the trilogy with a warmer, more emotional tone. That makes it a satisfying finale if you have played BoxBoy! and Bye-Bye BoxBoy!, though the puzzles stand on their own if this is your first.

Key Features

• Box-chain puzzle mechanic: Generate boxes from Qbby's body to build bridges, ladders, and barriers, all within a per-level limit.
• Stage-based progression: Dozens of short, self-contained puzzle rooms that introduce new twists as you advance.
• Collectibles and optional challenges: Hidden crowns and bonus objectives reward players who want to squeeze more out of each stage.
• Story-driven finale: A closing narrative arc that wraps up Qbby's trilogy.
• Decrypted .3DS format: Ready to load in Citra without the encryption layer that trips up some emulator setups.
• Compact download: The whole ROM is 131MB, so it downloads and stores easily.

Pros & Cons

• Pros: Elegant, easy-to-learn puzzle design; short stages that suit handheld-style play; a heartfelt conclusion to the trilogy; small 131MB file; decrypted format simplifies Citra setup.
• Cons: Japanese-only language, so you'll need to work through menus and story text without English; the visual style is deliberately minimal; the game is built around touchscreen and dual-screen conventions, which can feel different on a PC emulator; it assumes some familiarity with the earlier games' rhythm.

Who This ROM Is For

You'll get the most from this download if you already run Citra on Windows and want a polished, low-stress puzzle game to play in short sessions. It suits fans of logic puzzles, players who finished the first two BoxBoy titles, and anyone collecting complete 3DS series runs. If you need English text, keep in mind this is the JPN release — the puzzle solving itself is largely visual, but story beats and menus are in Japanese.

If you're building out a puzzle lineup, you might also enjoy Puyo Puyo Chronicles 3DS CIA & Decrypted (JPN) ROM Free Download, which offers a very different take on the genre with its matching-puzzle battles and RPG structure. For something action-oriented in the same region format, Beyblade Burst [Decrypted] 3DS (JPN) ROM Free Download is another option worth a look.

Version Freshness and Publisher Details

This listing reflects the original Japanese release of Sayonara! HakoBoy! from February 2, 2017. No later regional or patched build is included, so the version you get matches the launch content. The download is hosted under the developer credit Berry and is distributed as a free file. Because this is a fixed, single-release game rather than actively updated software, there is no changelog to track — what you see is the complete title.

The file size of 131MB is modest for a 3DS ROM, which is one reason the download moves quickly and fits comfortably on any modern drive. The decrypted format means you won't need to handle encrypted CIA files or additional decryption tools before Citra can read it.

Practical Installation Guidance

To play, download the ROM, extract it if it arrives in an archive, and point Citra at the resulting .3DS file. Citra may ask for shared font files or throw archive/fatal errors on first launch; the shared fonts are available from the Citra emulator page, and installing them usually clears those messages. For extracting archives, use a current version of WinRAR or 7-Zip — older extractors sometimes prompt for passwords that don't exist. There is no password on the game files here, and single- and multi-part games are both password-free.

If a file reports as damaged or you hit a RAR CRC error, re-download that part rather than assuming the whole set is broken. Broken or dead links can be reported through the reupload request page. Make sure your extraction software is up to date before you start.

Download Links

JPN (131MB)

ZippyShare | MegaUp | LetsUpload | 1Fichier

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Related Titles You May Like

If you're exploring English-patched options, Digimon Universe: Appli Monsters (English Patched) 3DS CIA & [Decrypted] ROM Free Download is a good companion pick. And if you want the direct predecessor to this game, the Bye-Bye BoxBoy! Decrypted 3DS ROM is the natural next stop.

If you enjoy this game, support the developers by buying a legitimate copy where available.

Frequently Asked Questions & Setup Guide