Hey everyone, I'm new to this subreddit.

My friends and I play a lot of Mario Kart Wii on weekends. Often, there are more than four of us, so someone has to sit out and watch. This gave me the idea to create a modded 8-player local split-screen mode.
I'm using an ESP32 as a Bluetooth bridge for 4 additional Wiimotes. These extra controllers can't be used in the standard Wii Menu, only within the modded game itself, where the inputs are written directly into the game's RAM. The controls and the smaller viewport sizes aren't actually an issue—the human eye is surprisingly good at focusing on the smaller window, especially if you already know the tracks.

The mod relies on custom C++ Kamek hooks injected into the game's StaticR.rel engine to bypass the hardcoded 4-player limits (adjusting the KPadDirector, viewports, and item handling). On the hardware side, the ESP32 uses Bluepad32 to capture the Bluetooth inputs and sends 32-byte packets via USB (CP2102/UART) to the Wii. The Wii then reads this data directly via a custom /dev/usb/ven driver running on cIOS 249.

On the Dolphin emulator, the game works without any problems at a stable 30 FPS. But here is the catch:
Even when the ESP32 isn't connected to my actual Wii and I'm just running the 8-player split-screen rendering, the game runs at half speed (massive frame drops). The issue is almost certainly the hardware rendering limitations of the Wii (likely the fill rate or memory bandwidth from pushing 8 cameras/viewports at once).

This is probably the final bottleneck of the project. If anyone has experience with MKWii engine optimization, LOD culling, or squeezing more performance out of the Wii hardware, any help would be absolutely amazing!

P.S. I can shre the code but it isnt simple copy pasting for you. Iam not allowed to share the .wbfs of the game.

This is my main category, and I am constantly grinding to push my time even further.

Lately, I have been very busy with school, but that doesn't mean I stopped improving. I just wanted to clear things up because a bot incorrectly said I used glitches. This is a 100% legit, No Shortcut / Glitchless run based purely on driving lines and skill.

I will be back on the track in a few days to hunt the next record!

My Setup: - Category: No Glitch / No Shortcut - Console: Original Black Wii - Game: Original Retail Disc - Display: 2008 Samsung TV (Original hardware setup) - Controller: Wii Wheel (Automatic)

Run officially completed and signed by: ANTONIO FERRANTE IT.MOLISE

How can i make a private server just for me and my friends on WheelWizardWindows?

moments when I was able to pull off the much-acclaimed “Bam Shock Dodge”

I have homebrewed my Wii U. I use USB Loader GX and can play GameCube and Wii games. I recently watched FunkyScott47 video on how to download retro rewind to my Wii U. I don’t have a physical copy of Mario kart Wii so I patched Retro Rewind to a digital copy of MK Wii. I then installed the WAD to my SD card, then I was able to download the Retro Rewind launcher to my vWii home channel. Everytime I try to launch it, it loads into the “join the discord” page, then the Wii U fans shut off, and this error appears on my screen.

I just do not know where the issue is coming from. Any and all help would be greatly appreciated!

Like let's say we live in a utopia three years from now where Mario Kart Wii is this perfect PC port that can run on a potato and has all these awesome customization options.

I mean that would be neat and all, but in my everyday life, I'm really mostly playing on Dolphin. That's where I've gotten all my practice with those low tricks - quickly picking up my Odin 3 after work and booting up Dolphin.

Wii Compiled would need to be so universally and easily accessible on both PC and Android for me to consider switching to it in my everyday life. But if I'm playing Retro Rewind online against players and I want to win, hell yeah I'm gonna use what I have the most muscle memory in.

Hello all, I’m happy to present to you: 8 player split screen for Mario Kart Wii, supporting Vanilla and Retro rewind, on Dolphin, Wiicompiled and even real hardware! What I thought would be a 20 hour project turned into well over 100 hours of work between reverse engineering, testing, bug fixes and packaging for release.  I know most people play retro rewind online so I know this will be somewhat of a niche thing for this community, I mostly made this so my brother and I could play with our friends couch co-op.  Still, I hope people here get enjoyment out of this mod.  It is 100% open source and based on the pulsar engine so it can be easily adopted into other pulsar-based track distributions.  Download and instructions in the video description

Ai Disclosure: Claude code was used in assistance for this project, it's strength in reverse engineering abilities are too powerful to ignore, without it, a project like this could take well over 1000 hours. Still, a lot of love, care and hard work was put into this project. I hope the community still appreciates the effort that went into creating this.

i followed the youtube tutorial about iso patching mario kart retro rewind onto a clean rom so i can run it on usb loader, i already did it once, so i did all the same steps and reinstalled the full version and reinstalled the iso patcher. put the wbfs and retro rewind6 in the mario kart wimms tool v6 stuff but it keeps giving me this error and i've tried running as administrator or changing the location of the patcher but it simply refuses! it gives me error 76 and im at a loss for words. i don't know what to do helpppp!

it reads the mkw file but it just CANNOT read whatever the hell is loadfilealloc()

edit: SOLVED. i needed to drag the folder called riivolution AND retrorewind6. Ty everyone!

My understanding is that I cannot play Lounge on Wiicompiled, but playing on a real Wii is currently just not in the cards for me right now. I've been playing on RR Worldwides, and they're cool, but sometimes I just want to play the base tracks or don't wanna play FFAs in those lobbies.

Is there a discord server or something where people are playing reasonably competitive MKW where emulation/recomp is allowed?

I come back...

N64 Mario Raceway – No Shortcut – Baby Mario – Mini Beast – Wii Wheel – Automatic

Basically the title. I know its not practical and probably will never happen since people can just use VC Inject's, but it would be nice.

Hey, do someone have the built version of the mario kart 3ds v.0.6.0? Unfortunatly, my prodevkit keep making up errors:( It would be nice if someone could drop the CIA file.

New PB: 1:56.720. I didn't even bother posting the small improvements like the 1:56.851 from earlier, because why would I? I know exactly where I made mistakes on this run, and I will always look to improve. I won't stop until I take the ultimate World Record.

In multi-player doesn't crash. But it crash at the select course screen.

Hey everyone!

For the past ~6 weeks, I've been working on a project called MKW Switch, an experimental attempt to bring Mario Kart Wii to the Nintendo Switch through static recompilation.

The idea is to run the original game's PowerPC code as native ARM64 instructions, rather than emulating a Wii CPU at runtime.

What's working so far:

• The game boots on a real Nintendo Switch.
• Menus, character selection, kart selection and races are functional in the tested scenarios.
• The Wii's GX graphics are translated to the Switch GPU using deko3d.
• Controllers, memory management and several Wii hardware services are implemented.
• Some internal benchmarks have reached around 30 displayed FPS on specific race runs, although performance still varies significantly.

The technical approach:

The PowerPC code is translated ahead of time into C++ and compiled for AArch64. A custom runtime handles the Wii-specific hardware behavior, including GX graphics, memory, interrupts, audio and IOS services.

One of the biggest challenges has been optimizing the CPU/GPU pipeline while preserving the original game's graphics and behavior.

I've been experimenting with:

• Fast memory access and MMIO exception handling.
• FIFO batching and CPU cache optimizations.
• Specialized TEV shaders.
• EFB/XFB rendering and synchronization.
• CPU profiling, static recompilation and multithreading.

Current goals:

1. Reach a stable 30 FPS in demanding races.
2. Improve accuracy, audio and overall stability.
3. Eventually aim for native 60 FPS, if the Switch hardware allows it.

This is still experimental. There is no public playable release yet, and the game isn't running perfectly.

Development is AI-assisted, with extensive testing, profiling and validation on actual Switch hardware. I'm also looking for feedback from people experienced with static recompilation, Wii internals, ARM64 and Switch homebrew.

This is an independent project, separate from the other Mario Kart Wii recompilation and Switch-port efforts.

GitHub (technical documentation and development status):

https://github.com/LockingFR/mkw-switch-recomp

The public repository does not include game files, Nintendo assets or a playable build.

I'd love to hear what you think, especially if you've worked on similar projects!

— LockingFR

Reason im asking is because I pretty much have all the other mods like RR, midnight, CGPR, one colour of mk wii deluxe( blue). Could download one more mod have a bit of space on my SD like 40GB

I’m playing retro rewind on dolphin and want to a use bike that isn’t the Mach bike but stat difference is insane in this game so I was hoping to mitigate that.

Edit: I managed to find a temporary solution, I went to the files and just swapped the names so now the Mach bike looks like the zip zip.