What is Cemu used for?

Cemu is a wii U emulator written in C++ that runs most Wii U games and homebrew on 64-bit Windows, Linux and macOS. It is a good fit for playing Wii U games on a PC and testing Wii U homebrew software.

Yes. Cemu is open source under the MPL-2.0 licence. Its source code is on GitHub at cemu-project/Cemu and is written mainly in C++.

Yes. Cemu is open source, so the software itself is free to use.

Can I self-host Cemu?

Yes. Cemu can be self-hosted on your own server or infrastructure.

What are some alternatives to Cemu?

Similar open-source tools in the Games & Emulation category include PCSX2, RetroArch and DuckStation. SaaS products in the same category include BacklogShuffle, BlueStacks and Boosteroid.

Is Cemu actively maintained?

Yes. The most recent commit to Cemu was on 1 October 2026, and the latest release is v2.6, published on 6 February 2025. The project has 9.9k stars on GitHub.

Cemu: open-source games & emulation

About Cemu

Cemu is an emulator for the Nintendo Wii U console. The project says it can run most Wii U games and homebrew in a playable state. It is written in C and C++ and under active development, with new features and fixes added regularly.

It is available for 64-bit Windows, Linux and macOS. Windows users can choose an installer or a portable build, Linux users can also get it from Flathub, and releases are posted on GitHub. The native macOS build is described as experimental, with known performance problems related to MoltenVK and Rosetta on ARM Macs. Companion resources include a compatibility list, a setup guide, language files and community graphic packs.

Cemu is licensed under the Mozilla Public License 2.0, with exceptions for the dependencies directory and a few individual source files that carry their own licenses. Bugs go to GitHub Issues, an older bug tracker remains online, and the project is reachable through a subreddit, Discord and a Matrix server.

Key features

Wii U game and homebrew emulation
Windows installer and portable builds
Linux and Flathub availability
Experimental native macOS build
Community graphic packs
Public compatibility list

Good fit for

→Playing Wii U games on a PC
→Testing Wii U homebrew software

Built with: C++
Tags: emulator; wii-u; nintendo; gaming; cpp; cross-platform; retro-gaming

Cemu: questions and answers

What is Cemu used for?: Cemu is a wii U emulator written in C++ that runs most Wii U games and homebrew on 64-bit Windows, Linux and macOS. It is a good fit for playing Wii U games on a PC and testing Wii U homebrew software.
Is Cemu open source?: Yes. Cemu is open source under the MPL-2.0 licence. Its source code is on GitHub at cemu-project/Cemu and is written mainly in C++.
Is Cemu free?: Yes. Cemu is open source, so the software itself is free to use.
Can I self-host Cemu?: Yes. Cemu can be self-hosted on your own server or infrastructure.
What are some alternatives to Cemu?: Similar open-source tools in the Games & Emulation category include PCSX2, RetroArch and DuckStation. SaaS products in the same category include BacklogShuffle, BlueStacks and Boosteroid.
Is Cemu actively maintained?: Yes. The most recent commit to Cemu was on 1 October 2026, and the latest release is v2.6, published on 6 February 2025. The project has 9.9k stars on GitHub.