Pokemon Ultra Sun is the enhanced Alola adventure that Nintendo and Game Freak released for the Nintendo 3DS on November 17, 2017. This CIA package delivers the EUR/WORLD build as a region-free file, so you can install it on a 3DS system that is not locked to a single region, or run the decrypted ROM on a Windows PC through the Citra 3DS emulator. If you have been searching for a clean, multi-language release that pairs the full retail experience with a straightforward install path, this is the file you want.

The core hook is Necrozma. The game builds on the Sun and Moon story and pushes the mysterious Legendary into the spotlight, tying it to Solgaleo and Lunala and to signature Z-Moves you will not find anywhere else. You get the same turn-based battling, island trials, and creature collecting that define the series, wrapped in a version that adds new content and a tougher late-game challenge.

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Technical Specifications

What Pokemon Ultra Sun Actually Offers

Ultra Sun is not a small patch over the original Sun. It is a full second pass through the Alola region with a reworked story, new locations, and a roster that includes creatures that did not appear in the first pair of games. The headline is the Legendary Necrozma, whose secret you spend much of the campaign uncovering. Solgaleo and Lunala return with new Z-Moves, and their connection to Necrozma drives the late-game plot in ways the original story did not explore.

You play as a young trainer who moves to the Alola islands and takes on the island challenge instead of the traditional gym circuit. That means trials, totem battles, and a final confrontation with the region's guardians. The pacing is friendly to newcomers, but the post-game and the Ultra Wormhole content give veteran players something to grind toward. If you enjoy team building, type matchups, and hunting for rare encounters, the loop holds up for dozens of hours.

The CIA format matters here. A CIA file is the installable package format used on the 3DS, and this build is labeled EUR/WORLD and region-free, which means it is not tied to a single territory. That makes it convenient if you own a system from a different region or if you prefer to run the decrypted ROM on your PC. Decrypted ROMs are playable on PC with the Citra 3DS Emulator, which is the practical route for most Windows users who do not own a modified handheld.

Key Features

• Necrozma-centered story: the Legendary takes a central role, and its link to Solgaleo and Lunala reshapes the climax of the Alola campaign.
• New Z-Moves: Solgaleo and Lunala gain signature Z-Moves that change how you approach key battles.
• Region-free EUR/WORLD CIA: installs without a single-region lock, which suits import systems and emulator setups.
• Multi-language support: the package ships with multiple languages, so you can play in the language you are most comfortable with.
• Full RPG-adventure loop: island trials, totem battles, team building, and a large post-game to keep you busy after the credits.
• Emulator-ready: the decrypted ROM runs on Windows through Citra, giving you a PC path if you do not want to modify a handheld.
• Split-archive download: the file is delivered in parts, so a dropped connection does not force you to restart a 3.6GB transfer.

Pros & Cons

• Pros: enhanced story over the original Sun and Moon; region-free CIA works across territories; multi-language package; solid post-game content; playable on PC via Citra.
• Cons: you must download and extract every part before the CIA is usable; a 3.6GB total is a large transfer on slow connections; installing a CIA requires DevMenu, BigBlueMenu, or FBI, so there is a setup step if you are new to 3DS homebrew; the game is a 2017 3DS title, so the visuals and frame rate reflect that hardware generation.

Download Links and Package Details

The EUR (Retail) package is split into four parts totaling 3.6GB. The WORLD package is split into three parts totaling 2.1GB. Download every part from the same host before you extract, because multi-part RAR archives will not open if a piece is missing.

EUR (Retail) — Part 1 to 4 (3.6GB)

MegaUp → Part1 | Part2 | Part3 | Part4
DataNodes → Part1 | Part2 | Part3 | Part4
1Fichier → Part1 | Part2 | Part3 | Part4

WORLD — Part 1 to 3 (2.1GB)

MegaUp → Part1 | Part2 | Part3
1Fichier → Part1 | Part2 | Part3

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Installing the CIA File

Once you have the full archive extracted, you will have a .CIA file. Place it on the BigSD card in your 3DS and install it with DevMenu or BigBlueMenu, or use FBI. The install step is the part that trips up first-timers, so confirm the card is formatted correctly and that the CIA sits in a folder your installer can browse. If you are running the decrypted ROM on Windows instead, point Citra at the extracted game file and launch it from the emulator's game list.

For extracting the multi-part RAR files, use WinRAR or 7zip. There is no password on the game files, and all games are password-free. If a part reports a damaged archive or a RAR CRC error, re-download that specific part rather than the whole set. If a link is dead or a file is missing, use the reupload request page linked on this site.

Who This Release Is For

This package fits a few clear situations. You own a Nintendo 3DS and want the enhanced Alola adventure in a region-free package with multiple languages. You prefer to keep your physical cartridges sealed and want a digital copy you can install. Or you do not own a handheld at all and plan to play the decrypted ROM on Windows through Citra. The tradeoff is that the CIA route assumes some familiarity with 3DS homebrew tools, while the emulator route assumes a reasonably capable Windows PC. Neither path is a one-click install.

If you like fast, high-energy action rather than turn-based battles, the site also covers titles like ULTRAKILL Free Download (Build 22957324), which sits at the opposite end of the genre spectrum.

Version Freshness and Publisher Details

The game shipped on November 17, 2017, and the package here reflects that retail release rather than a later patch. Developer and publisher credits in the listing point to Berry for the distribution package, while the game itself was developed by Game Freak and published by Nintendo. Because this is a fixed retail build, there is no rolling changelog to track; the file you download is the same release regardless of when you grab it. What can change is link health, so if a host is down, check the alternate mirrors above before assuming the file is gone.

Treat the download as you would any large archive from the web: extract with an updated WinRAR or 7zip, verify that all parts are present, and keep the extracted CIA in a known folder before installing. The listing does not make any malware or cleanliness claims beyond the password-free note, so verify files on your own system.

Related Reading

If you are working through the Ultra Sun story and want more region-free 3DS content, the earlier Pokemon Sun 3DS CIA (Region Free) release pairs naturally with this one for comparison. Players who enjoy the "Ultra" naming theme but want a different genre can also look at Ultra Cop (v1.019) or the arcade-style ULTRA0.

If you enjoy this game, support the developers and buy a copy.

Frequently Asked Questions & Setup Guide