If you have gotten a JP copy of TTYD (Or F Zero GX), you may have noticed that it doesn't work properly with a Freeloader. This is because the game is programmed to rely on the game region of your console when booting up. If you try to boot the game in any region that is not Japanese, then you will get an error message saying "No messages", and closing this dialogue box then causes the game to crash. (F Zero GX will not crash like this, but there will still be some other issues within the game)

To get around this, you need to have your console's game region set to Japanese. The only way to do this is to either have a Japanese GameCube, or to have a Wii with the Homebrew Channel on it.

For the Homebrew Channel approach, there is a guide on the Resources page for how to do this: https://www.speedrun.com/resourceasset/hrqgm

It should also be noted that the memory card you use for this will also need to be formatted to Japanese as well. Any GameCube memory card will work for this. All you need to do is have the memory card inserted, and the game will detect that the memory card is not in the correct format, and will then ask you if it should format it. By doing this, you are also deleting all of the saves that were previously on the memory card. If you want to keep these saves, you can use a Homebrew Channel app called GCMM to back up the saves onto an SD/USB. This app is included in the guide as well.

Another thing to note is that it is possible to boot and play English games while you have the console's game region set to Japanese. You do need some type of Freeloader to initially boot the game (Such as Priiloader, which is included in the guide), but afterwards the game will work perfectly fine, and you will even be able to save onto the Japanese-formatted memory card. Doing this does not cause any issues with different versions of the same game, as each version uses different IDs (For example, the Japanese version of TTYD has an ID of G8MJ01, while the English version has an ID of G8ME01). One thing to mention, however, is that you cannot use a Japanese-formatted memory card with PAL games. I'm not sure why, but the game simply wont allow you to save onto it, even though it works with English-formatted memory cards.