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{{Infoboxemulator|image logo = Cemu-Logo.png|first version = {{CemuVer}}|second active = Yes|third platform = Windows|fourth architecture = x86_64|target = [[Wii U emulators|Wii U]]|developer = Exzap, Petergov|fifth website = [http://cemu.info Cemu]|sixth license = Closed -sourcefreeware|support = [https://www.patreon.com/cemu Patreon]}}'''[[wikipedia:Cemu|Cemu]]''' is a closed-source [[Wii U emulators|Wii U emulator]] for Windows. System requirements are pretty high if you want games It is known to run at full speed, although there are numerous bugs be the very first Wii U emulator ever that can crash boot games due to unimplemented features. It emulates the GamePad, Classic, and Pro controllers. A compatibility list can be found [http://compat.cemu.info/ here] or [http://docs.google.com/spreadsheets/d/19WV2YQvS2PkiHnQTlYP7cE2eHOPl06Rx4tCvfud_Hpw/edit?pref=2&pli=1#gid=0 here].

==DownloadsDownload==* {| cellpadding="4"|-|align=center|{{Icon|Win-big}}|'''[http://cemu.info/index.html#download Latest public release]'''<br/><small>Available one week after the Patreon builds release</small>|-|colspan="3"|<hr/>|-|align=center|{{Icon|Win-big}}|[https://yiff.party/patreon/2814971 Cracked Patreon builds]|}

You will also need enough storage for the [[Wii U emulators|Wii U]] games. Running Cemu on WINE [[Wine]] has been reported to work just as well as Windows.

* Graphics Card: Supports at least OpenGL 4.01

* Graphics Card: Supports OpenGL 4.0 or newer 6 (avoid integrated graphics)* Memory: 6 8 GB or more

==Setting upGame Formats and Files Needed=====Physical dumpsDumps===CemuYou's directory needs proper values ll first need to fill in the "keys.txt" filein Cemu's directory. The example It has a sample line can be deletedwith a bogus key and a comment, which you may as well delete.

You need yours to Your file must have many lines like this; , one for the Wii U Common Key(D7B00402659BA2ABD2CB0DB27FA2B656), and one line for the Game Key of each for game. Sharing these keys isn't exactly safe legally, but ROM sites at least share [http://pastebin.com/GWApZVLa the Game Keysones]. Note that for games that use using the Loadiine format, you donwon't need a Game Key at all, only the latest version of but those will need Cemuversions from 1.4.0 onward.

Formats supported are Your ISO must be either uncompressed, compressed using WUD compressedformat, and or in Loadiine ISOsformat (only possible for versions 1.4.0 onward) to boot in Cemu. Here's a [http://docs.google.com/spreadsheets/d/19WV2YQvS2PkiHnQTlYP7cE2eHOPl06Rx4tCvfud_Hpw/edit?pref=2&pli=1#gid=0 compatibility list]. Dump your discs using [https://gbatemp.net/threads/wudump-dump-raw-images-from-a-wiiu-game-disc.451736/ Wudump].

===Amiibo supportDigital Copies===CEMU can read binary Cemu supports either physical games dumps from NFC tags by going in WUD, or compressed WUX format, as well as game dumps converted to NFC -> Scan NFC Tag from filethe Loadiine format. Support is incomplete, Loadiine games come as multiple directories with game files and not all figurines may be compatible yet due to potentially bad readsa .rpx file.

The Wiimote still isnCemu added native support for Wii Remote controllers as of 1.12.0. Cemu cannot connect to a real (or emulated) [[Nintendo 3DS emulators|3DS]]. ===Cemuhook===Using this is completely optional but highly recommended. Without Cemuhook, some games won't emulated yethave texts, have laggy cutscenes and display numerous other bugs. Download [http://sshnuke.net/cemuhook/ the latest version] compatible with your Cemu version, unpack it to the same directory as cemu.exe and right-click on dbghelp.dll, check Proprieties, Digital Signatures tab, but select a signature and press Details. This should make it no longer crash at start-up. Make sure you can also have up to 8 GamePads set in the menulatest GPU driver installed, as well as both x86 and x64 versions of the [https://aka.ms/vs/15/release/vc_redist.x64.exe Microsoft Visual C++ 2017 X64 Redistributable].

Wii U GamePad bindings:* Touch Controls: Mouse left click.* Tilting and Gyro Controls: Holding After the first boot of Cemu with cemuhook installed, accept to download the mouse right-click and dragging. It's lacking Z-axis key binding at missing shared fonts to make the momenttext in some games (Super Mario Maker among others) display correctly.* Switch Screens between TV and GamePad: "TAB" keyWhenever you boot Cemu now, "Ctrl+TAB" to keep focus. TV this cemuhook tool is enabled by defaultand offers various additions for better motion control emulation or some graphical hacks that greatly enhance Zelda BOTW in particular.* MicrophoneVarious way to take advantages of the cemuhook motion control emulation are listed [http: Spoofed, a configurable key simulates blowing on the mic//compat.cemu.info/wiki/Motion_Sensing#Full-motion_Solutions here].

Enabling "GX2SetGPUFenceSkip (HACK)" enhances graphical emulation in BOTW in particular. A pre-installed Graphical Pack that comes with recent versions of Cemuhook, "LWZX Crash Workaround", as well as the "GX2DrawDone()" option under Experimental, should help with some general crashes specific to BOTW. ===Shader Caches===When your game is loaded, check for its ID on the title bar in front of "SaveDir:" and note it down. The directory where transferable shader caches are stored is <code>.\Cemu cannot go online or connect \shaderCache\transferable</code>. They're generated the first time you play through a game and at that time cause noticeable stuttering. You can download a complete cache from places like [http://www.reddit.com/r/Cemucaches/comments/7bv7el/complete_shader_cache_collection_1110c_v2/ here] and rename them to match your game version's ID to spare yourself most of that unpleasant experience. Just keep in mind that shader caches from versions older than 1.8.0 are incompatible with later versions of Cemu. At startup, Cemu will prepare a real (compiled version of that cache under <code>.\Cemu\shaderCache\precompiled</code> and that one depends on your GPU driver, so you might want to erase it if any problems or emulated) [[Nintendo 3DS emulators|3DS]]crashes when compiling shaders at startup occur.

Shaders are normally cached as you play the game. This can cause a lot of stutter stutters and slow the game down.

Cemu accepts other shader caches that can be traded online. You can go to [https://www.reddit.com/r/CEMUcachesCemucaches/ /r/CEMUcachesCemucaches] and search for the ones you want. It's often very difficult to generate a complete cache for large games, and will not completely eliminate stuttering.

Some games' transferable caches may cause slowdowns on some graphics cards like the GeForce GTX 970. If this is the case, you will have to generate your own shaders and delete the ones you downloaded. In the case of the GeForce, also consider deleting the .bin and /.toc file in your GLCache at <code>%APPDATA%\NVIDIA\GLCache\(hexstring)\(hexstring)</code>.

MP4 videos are often encoded for Wii U games with the expectation that the hardware plays it back on-the-fly, but because the x86 architecture is not PowerPC, this is resource-intensive for Cemu since it has to run the PowerPC video decoder. An unofficial utility called [https://sshnuke.net/cemuhook/ CEMUhookCemuhook] bypasses this by playing H.264 video directly from Windows codecs that are programmed for x86.

Cemu may not be programmed well with hyperthreading. To disable it, go into the Task Manager, right -click cemu.exe and then set these affinities:

To work around emulation bugs and other problems the way [[Dolphin]] does, "Graphic Packs" are title-specific property sheets which defines define advanced settings you might not be able to change in the interface. Basic rendering options including shadow resolution and quality, post-processing effects like bloom, lighting and godraysgod rays, custom anti-aliasing, and such can be applied here. You can even use them to ''reduce'' the internal resolution for an increase in the framerate. This is not to be confused with '''Texture Packs''', which are replacement textures; CEMU Cemu doesn't support that, but it is planned.

* The emulator is still unfinished and unoptimisedunoptimized, as noted in the lack of efficient and stable H.264 video decoding, causing glitchy videos. This is worked around with Cemuhook entirely, but its approach to video decoding is unlikely to be taken into the emulator.

Until 1.7.5 was released, one developer from Team Cemu, mudlord, spun off the project out of creative differences with the team, and in protest he put out cracked versions of early builds on his personal blog. These were also used to expose people breaching licenses for other emulators. A subreddit and Discord server was made to discuss Cemu piracy.

The official subreddit for Cemu advises against downloading unofficial "builds", saying they could potentially be traced with malware, and have made it is part one of their rules not to counterargueadvocate it. The Cemu piracy subreddit has encountered malware authors taking advantage of this.