The Azahar 3DS emulator is getting Android multiplayer

The development team behind the Azahar Nintendo 3DS emulator has released the first release candidate for version 2126.0. It brings full multiplayer support to the Android build. This update unifies a lot of small improvements that have been brewing in the background over the last few months. I use Azahar on the AYN Thor and it works great, so seeing these new multiplayer functions roll out to the Android version is a welcome surprise.

The team shared the update details over the weekend. Alongside the new networking capabilities, the release candidate includes a revamped GDB stub for developers who need to debug homebrew applications. The initial rollout hit a minor speed bump right out of the gate. The developers had to quickly upload a second release candidate to GitHub to fix a critical stability issue that caused the Android build to crash on startup.

A fix for Luigi's Mansion

The most interesting technical addition is a highly experimental toggle for simulating 3DS GPU timings. The Nintendo 3DS uses a quirky proprietary graphics chip called the PICA200. Emulating the exact timing of how this chip processes rendering commands is notoriously difficult. Azahar now has an improved GPU interrupt queue that more closely mirrors how the real hardware behaves.

You have to manually enable this feature in the graphics settings. It is disabled by default because the code is still in active testing. This timing fix solves a long-standing problem with Luigi's Mansion 2: Dark Moon. The game previously suffered from severe graphical timing issues that broke the rendering pipeline. With the new toggle flipped on, the ghost-hunting adventure is finally fully playable.

Local wireless on a phone

The original 3DS hardware was built entirely around local multiplayer and passive wireless communication. Getting those features to work accurately on a desktop PC took years of reverse engineering. Translating that local wireless communication to Android devices introduces a whole new layer of networking headaches due to how different phone manufacturers handle Wi-Fi permissions and background tasks.

The addition of Android multiplayer means players can finally trade Pokémon or race in Mario Kart 7 with other people using mobile devices. It bridges a major gap between the desktop and mobile emulation experience. The AYN Thor handles the standard emulation overhead without breaking a sweat. Having proper multiplayer support makes the Android handheld feel much closer to a real Nintendo console. You can actually play with friends in the same room again.

Back up your saves

The developers are treating this build as a strict release candidate. They plan to let it sit for seven days to catch any lingering bugs. If users do not report any major problems, version 2126.0 will become the new stable release.

The team strongly advises everyone to back up their user data directory before installing the update. Pre-release software always carries a risk of corrupting save files. We have all been there. You stare at a corrupted save file at 2am and wonder why you didn't just copy the folder first. If you prefer a stable experience, you might want to wait until the testing period concludes later this week.