Some games support custom soundtracks:

• Excite Truck
• Endless Ocean

Music files have to be .MP3. They can be saved anywhere on the SD Card. You can't do nice things like have certain folders for certain games, it just finds all the music files. You select one song at a time, or tell it to pick one at random.

You can also hack-in your own music to other games:

• http://wiki.tockdom.com/wiki/Custom_Music

There are three different types, I would say.

1. A shell with no electronic parts. You put a Wiimote in, and attach a nunchuck if required.
2. A shell with nunchuck built-in. Still requires insertion of wiimote.
3. A stand-alone gun.

The only ones I've tried are the first type. The form-factor of the official shell is good for some games, like the Sega Model 2 ports. For other stuff I tend to use a little Nyko pistol shell with an uncomfortably wide grip. There are now some clones with the same design.

• Light Gun Reviews 138: Best ways to play Wii light gun games - Good notes on Wii lightguns.

Though the Wii has two USB ports on the back, games typically don't support controllers that use that interface, and if they do, they're controllers specifically designed to work with that game. USB controller support is a per-game thing, in other words.

An exception is using Nintendont to play Gamecube games, which will handle communication with USB HID interfaces, so you can, for example, use a joystick with SNK v. Capcom 2.

You can of course use controllers from other consoles via adapters, though depending on what you want to use this can get a bit convoluted. At least they're not expensive. This video runs through pretty much everything: PS4, Joy-Con, N64, Xbox & more Controllers all working on Nintendo Wii. Pretty surprising to me that the only adaptors that go directly into the Wiimote are for NES and SNES, Gamecube, and PS2, but hopefully I can figure out how to wire up other pads to Wii connectors at some point (NB: http://www.hardwarebook.info/Wiimote_Expansion_Port).

• https://gbatemp.net/threads/vwii-wii-hid-usb-support-why-is-it-limited-to-nintendont.458055/

A resistive tablet and pressure-sensitive stylus developed by THQ. You attach and dock the Wiimote inside, and there are some games released for it that take advantage of the tilt functionality.

A version was later released for the PS3 and 360. It looks a little different, and seems to add some multitouch functionality.

• uDraw GameTablet

When I got my Wii I spent a bit of time agonising over rechargeable battery packs. There are a bunch available, but not much concrete info on them. Took me a while to realise that the clear best option is to just buy good quality rechargeable AAs, namely Eneloops. You can get little starter kits with a charger and a quantity of AAA and AA cells 👌

There are lots of cool projects based round using it as an interface with a PC. Seems pretty straight-forward to get it to work.

• https://kenmooredesign.blogspot.com/2008/11/wii-theremin.html
• http://johnnylee.net/projects/wii/

• There's a paintbrush-shaped nunchuck for that Epic Mickey game.
• There's a sonic screwdriver wiimote for Dr. Who.

• There's a bowling ball-shaped wiimote shell.
• There's a pair of dumbbells, dunno if they have any extra weight.
• Cooking Mama and Trauma Center have similar Wiimote shell sets. One part is a swiss-army-knife type thing with multiple implements, the other is a flat thing that makes sense as a frypan, but for Trauma Center/ I dunno what it's even supposed to be.
• Thrustmaster made a lightsabre one.
• There are pom-poms!
• I found a pic of a boxing glove that doesn't even look real, let alone comfortable.
• There's a 'airplane controller stand' that I'd like. Not sure what games it'd work well with though.

• List of games that support Wii Balance Board.
• https://wiki.gbatemp.net/wiki/List_of_Wii_games_compatible_with_Wii_Balance_Board - WikiTemp.

Highlights / curiosities from that list (now with notes~):

Just dumping links for now.

• https://www.colorado.edu/neuromechanics/research/wii-balance-board-project
• https://softwarebakery.com//projects/wiidevicelibrary
• https://www.youtube.com/watch?v=t4UciZLl2Hk
• https://github.com/pierriko/wiiboard
• https://www.mattcutts.com/blog/linux-wiimote-via-bluetooth/
• https://www.mattcutts.com/blog/linux-wii-balanceboard/
• https://stackoverflow.com/questions/19214805/how-can-i-permanently-pair-a-wii-balance-board-with-an-ubuntu-pc
• https://lifehacker.com/operate-your-computer-with-wii-controllers-5042254?IR=T
• https://dvdhrm.github.io/xwiimote/
• https://dani33l.wordpress.com/2012/11/11/using-python-with-balance-board-ubuntu/

Wiis are very easy to mod, which lets you do stuff like re-enable online services and play, and run games from external drives and the SD card.

• List of homebrew emulators - WiiBrew wiki.
• What are the best emulators to use on the Wii in 2021? - GBATemp thread.
• Emulation On Wii / Playability Guide - 2019 video. Penultimate chapter has a summery of his recommendations.

Dumping some links on home-brewing Wii stuff.

• https://wiibrew.org/
  • http://wiibrew.org/wiki/Making_homebrew
  • http://wiibrew.org/wiki/Tutorials
  • http://wiibrew.org/wiki/List_of_development_tools
• https://wiki.gbatemp.net/wiki/Category:Wii
• http://www.codemii.com/category/wii-programming-tutorials/
• https://devkitpro.org/wiki/Getting_Started
• http://www.wiimc.org/about/ - Wii Media Centre. Wii struggles with video over 720p though, I believe.
• https://github.com/abstrakraft/cwiid - another wiimote library

RiiConnect is a way to use the online functions of the Wii even though those services are now shut-down :)

It's a simple script you run that generates some files, that you then copy onto your SD card, and install via the Homebrew Channel/

NB: I also had to install the dependencies mono and xdelta3 to get it to run.

• https://wii.guide/riiconnect24

Wiimmfi (I keep calling it WiiFML in my head) is the replacement for online features in games. There's a general patch that works for most stuff, but some particular games have their own patch, which does some extra stuff like change text in the game data.

Mario Kart and Smash Bros. are probably the most popular online Wii games (2021/22), but it works for Animal Crossing, PES, and other stuff too.

• https://github.com/RiiConnect24/acw-patcher
• https://gbatemp.net/threads/how-to-play-wiimmfi-on-wii.510577/
• https://wii.guide/wiimmfi.html
• https://wiimmfi.de/

You can easily convert an ISO to a WBFS file with the command-line tool Wit (or using a GUI frontend for it) using the copy command. Simply wit copy [filename].iso [filename].wbfs will do the job quickly!

• https://wit.wiimm.de/wit/cmd-copy.html

• Notes on Wii Games.
• https://twitter.com/NintendoMemo/status/1354396097964347392 - logo concepts.
• Wii - Technical info. on Hardware Book, including Wiimote pinout.