Dokapon Up Mugen No Roulette English Translation Switch

May 2024 ยท 2 minute read

This mod requires version 1.0.3 of the game, you can legally purchase the game by creating a Japanese Nintendo account and using gift cards to purchase it.

The mod itself is a LayeredFS patch and can be installed on a homebrewed Switch or on Yuzu Emulator.

On a homebrewed Switch:

On Yuzu emulator:

Also, in theory, you should be able to do online multiplayer. But it is not tested nor this is recommended.

Yuzu Workarounds

On Yuzu, there is currently a glitch where the submenus in the main menu won't display properly. Here are the instructions on how to start a game blind:

Local Multiplayer:

Story:

Technical Details

On the more technical side, the game is a Unity game, and in it were some files in a few asset bundles that needed to be extracted, modified, and repacked. Some of the text was in JSON, which was easy to modify. After that, it was figuring out what broke the game when translated and then not translating that. From there, it was modifying the UI, which meant modifying a large number of textures and repackaging them.

The story text turned out to be the hardest, due to difficulties in understanding how it was saved. Turns out, it used MessagePack (pretty much serialized JSON), and with that, all of the text could be modified. Finally, a bunch of scripts, custom programs, and Google Sheets make the whole translation come together. Lots of bumps along the way, but it's finally finished.

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