BioHazard: The Mercenaries 3DS brings the fan-favorite Mercenaries mode from the Resident Evil series to Nintendo 3DS as a standalone, mission-based action shooter. Developed by Tose and published by Capcom, this Japanese-region CIA release lets you jump straight into wave-based combat with a roster of familiar characters, each carrying distinct loadouts and abilities. If you own a 3DS with custom firmware, this is a compact, pick-up-and-play way to experience one of the handheld's most focused shooters.

The game first launched on June 2, 2011, and remains a cult favorite for its arcade-style pacing. You pick a character, choose a stage, and survive timed enemy waves while chaining combos and collecting pickups. The CIA format means the title installs directly to your system's home menu, so you can launch it like any other downloaded game rather than swapping cartridges.

Technical Specifications

What BioHazard: The Mercenaries 3DS Offers

At its core, the game is a score-attack shooter. Each stage throws timed enemy waves at you, and your job is to clear them efficiently while building combo chains. The faster and more accurate your takedowns, the higher your rank and the better your rewards. You will find a cast drawn from Resident Evil lore, and each character plays differently — some lean toward close-quarters melee, others favor ranged crowd control. Choosing the right fighter for a stage is half the strategy.

The 3DS hardware shapes the experience in practical ways. The dual-screen layout keeps your map and inventory on the lower display while the action stays on the top screen. Circle Pad Pro support adds a second analog input for camera control, which makes aiming noticeably smoother if you have the accessory. The game also supports local wireless co-op, so two players can tackle missions together when both own the title.

Key Features

• Wave-based Mercenaries mode: Timed enemy waves with combo scoring and rank rewards.
• Multiple playable characters: Each fighter has a distinct weapon set and playstyle.
• Stage variety: Different maps demand different approaches to crowd control and positioning.
• Local co-op: Team up with a nearby player over local wireless.
• Circle Pad Pro support: Optional second-stick camera control for smoother aiming.
• CIA install format: Installs to the home menu on custom firmware systems.
• Compact download: The 686MB file is small enough to store without eating your SD card alive.

Who This Release Is For

This JPN CIA build suits players who already run custom firmware on a Japanese or region-free 3DS setup and want a quick, arcade-style shooter without a cartridge. It is also a practical pick for anyone who prefers digital installs over physical media, or who wants to revisit the Mercenaries formula on original handheld hardware. If you mainly play on PC, note that decrypted ROMs can run through the Citra 3DS emulator, which is a separate path from installing the CIA on a console.

Because the release is region-locked to Japan, the in-game text and menus are in Japanese. That is a real limitation if you do not read the language — mission objectives and character prompts will require some familiarity or outside reference. The game is also mission-focused rather than story-driven, so players expecting a full narrative campaign may find the structure repetitive after extended sessions.

Pros & Cons

• Pros: Fast, focused action; strong character variety; local co-op; small 686MB footprint; straightforward CIA installation on CFW.
• Cons: Japanese-only language; region-locked to JPN; repetitive wave structure; no full story campaign; co-op requires a second player and copy.

Installation Guidance

You install the .CIA file using DevMenu or BigBlueMenu, or with FBI. Place the .cia file properly on your BigSD Card first, then run your installer of choice and select the file. The input does not include a step-by-step firmware guide beyond these tools, so follow your CFW setup's standard CIA installation flow.

For extracting any RAR archives, use WinRAR or 7zip. The uploaded game files carry no password, so you should not need one to unpack them. If an archive reports damage or a RAR CRC error, re-download that part rather than trying to repair it.

Download Links

JPN (686MB)

MegaUp | Tusfiles | MediaFire | 1Fichier

Version Freshness and Publisher Details

The article was last updated on December 1, 2020, by Berry, and the version field is listed as an estimated current build rather than a fixed number. The original release date is June 2, 2011. Capcom published the game and Tose developed it; the CIA packaging and hosting are handled by the download site, not by Capcom. Treat the download as a community-hosted file and verify the checksum against the source if integrity matters to your setup.

If you enjoy squad-focused tactical games, you may also like Mercenaries Saga 2 -Order of the Silver Eagle, which shares the mercenary theme with a very different turn-based approach.

Notes and Troubleshooting

• For multi-part RAR extraction, check the FAQ Section before asking in the comments.
• Update your WinRAR software — older versions sometimes prompt for passwords that are not actually set.
• There is no password on any game file uploaded here; all games are password-free.
• If a RAR file shows damage or a RAR CRC error, re-download it.
• For broken, missing, or dead links, use the Reupload Request page.

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If you like this game, buy it and support the developers.

Frequently Asked Questions

Is BioHazard: The Mercenaries 3DS (JPN) CIA completely free?

Yes, the download is listed as free. The game itself is a commercial Capcom title, so buying a legitimate copy supports the developers.

How do I install the CIA file?

Place the .cia file on your BigSD Card, then install it with DevMenu, BigBlueMenu, or FBI on a custom firmware 3DS.

What languages does this version support?

Japanese only. This is the JPN region release.

Can I play it on PC?

Decrypted ROMs are playable on PC with the Citra 3DS emulator, which is a separate route from console CIA installation.

What is the file size?

The download is 686MB.

Is there a password on the archive?

No. The uploaded game files are password-free.

Recommended For You: If you enjoy this game, also check out Mercenaries Lament: Requiem of the Silver Wolf (v1.0) and Bee Simulator The Hive Switch for more top-rated gameplay.

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