Cemu

What Cemu is

Cemu is a free, open-source program for running Wii U games and applications on Linux, macOS, and Windows computers. The project says most Wii U games and homebrew can reach a playable state. It emulates the GamePad, Pro Controller, and Classic Controller, with partial support for Wiimotes; keyboard and USB controllers are supported too. Cemu offers netplay, graphics upscaling, and support for most online features. Pretendo support is experimental and limited to 2.0 experimental releases. Players can customize aspects of games with graphic packs, which are available through a button inside Cemu. The listed graphics requirements include OpenGL 4.5 or Vulkan 1.2. The minimum memory requirement is 4 GB RAM, and 8 GB or more is recommended. Intel GPU support is limited, with Vulkan recommended for Intel GPUs. Downloads are available for all three desktop platforms; Windows has installer and portable versions, and Linux releases are also on Flathub. The native macOS build is experimental and may not provide stable, issue-free gameplay. Users of .wud and .wux games need to supply their own decryption keys; the FAQ recommends .wua files, which do not require keys.

Who it suits

Cemu suits Wii U players who want to run games or homebrew on a Linux, macOS, or Windows computer, with options for controllers, graphics upscaling, and netplay. It is also open source under Mozilla Public License 2.0, with stated exceptions for some dependency and source files.

Limits

The native macOS build is experimental and is not considered stable or ready for issue-free gameplay. Pretendo support is experimental and appears only in 2.0 experimental releases. The listed minimum is 4 GB RAM, with 8 GB or more recommended; Intel GPU support is limited.

Getting started

1. Visit the Cemu website and choose a Windows, Linux, or macOS release.
2. On Windows, choose the installer or portable format; Linux releases are also available on Flathub.
3. Check that the computer meets the listed graphics API requirement and has at least 4 GB RAM.
4. Launch Cemu and use the community graphic packs button to download graphic packs if desired.
5. For .wud or .wux games, provide your own decryption keys; the FAQ recommends .wua files, which do not require keys.

Verdict

Choose Cemu if you want a free, open-source Wii U emulator for a desktop computer, especially if you want controller options, netplay, or graphics upscaling. Look elsewhere if you need a stable native macOS build or want to use .wud or .wux games without supplying your own decryption keys.