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Getting Started

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Welcome, new Cemu user!
This is a guide for everyone who never had any contact with emulation and/or forgot how to do certain things.
Please carefully read the explanation and the needed steps!

Be advised
WE DO NOT SUPPORT ANY ILLEGAL ACTION YOU ARE COMMITTING BY DOWNLOADING GAME FILES THROUGH THE INTERNET!
YOU SHOULD OWN THE ORIGINAL WII U AND KNOW HOW TO DUMP THE GAMES TO YOUR DEVICE!
ONLY DUMP GAMES THAT YOU OWN! PLAY & BE LEGAL!


What is Cemu?

Cemu what.PNG

WiiU runs the "Café OS", and Cemu emulates the system. It creates the possibilty to run Wii U data formats on a PC, e.g. dumped games.
For more advanced information about Café OS, check out this link: http://wiiubrew.org/wiki/Cafe_OS

System Requirements

OS: Windows 7 (x64) or above
API: OpenGL 4.0 (4.5 is used if available)
RAM: < 4 GB, 6 GB or more recommended
GPU:
  • NVIDIA GPU: Runs as expected on most recent driver.
  • AMD GPU: Runs as expected on most recent driver
  • Intel GPU: Not officially supported. Heavy visual glitches.

Download & Install Cemu

  1. Download the latest version of Cemu. Check the main wiki page for the download link.
  2. Unpack the cemu_x.x.x.zip file.
  3. Start the emulator by double-clicking Cemu.exe.
  4. Installing Extensions like Cemuhook for video playback.
  5. A Great text guide for setting up CEMU is maintained here: Text Guide for Setting up Cemu -- With Links! by Serfrost

Supported games

Before you begin dumping your games, check out http://compat.cemu.info/ or our List of games to know how the performance is or what bugs are existing.

Rating Icon Description
Perfect Smiley-Perfect.png Games rated this are games that have no discernible issues. No graphical or audio glitches, no crashes, no bugs that didn't exist in the original game. Quite simply, they run perfectly.
Playable Smiley-Playable.png Games in this category are playable to the end of the game. Can have some minor graphical or audio glitches or issues, but these do not greatly affect playability or prevent game completion.
Runs Smiley-Runs.png Games in this category can get in-game and usually run very well, but major graphical or audio glitches or game-breaking bugs make it difficult to continue playing or finish the game.
Loads Smiley-Loads.png Games in this category manage to load at least a screen before crashing, or can get through the in-game menus before crashing, or sometimes in-game before crashing, but they generally crash CEMU at some point.
Unplayable Smiley-Unplayable.png Games in this category do not load in CEMU. Either they crash immediately following the first load attempt, or they display a black screen until you close CEMU.

Configuration

Dumping game files

You'll need:

The following tutorial is made by Goldtex, using Mario Kart 8 as an example.

This tutorial currently as of 31/7/17 the browser exploit was patched by 5.5.2 if you're on 5.5.2 you can't dump content.

Physical copies

  1. Insert your SD Card into your computer. Follow the Starter Pack (Wii U Homebrew Pack) that was linked.
  2. Safely take out your SD Card, and place it into your Wii U.
  3. Turn on your Wii U, make sure there's no disc in the console. If you want to dump onto a USB drive, then plug it in right now. Tell the Wii U to not format it.
  4. Go to the internet browser, go to loadiine.ovh, and choose Homebrew Launcher. Once Homebrew Launcher opens, choose disc2app.
  5. Press A if you want to dump to the SD Card, or press B if you want to dump onto the USB drive. Once disc2app asks for the disc, insert it into the Wii U.
  6. The Wii U will start dumping the files off the disc. Be patient with this.
  7. The Wii U will go back to the main menu once it finishes dumping.
  8. Redo the steps to getting to the Homebrew Launcher. Instead of launching disc2app, open up ddd.
  9. (Windows 8 and above) Open up Task Manager, click more details, go to performance, then click on Ethernet/Wi-Fi. Look at the IPv4 address, and enter that into the ddd screen. Look at the gamepad screen for instructions.
  10. (Windows 7 and below) Go to the command prompt on your computer, and type in ipconfig. Look at the IPv4 address, and enter that into the ddd screen. Look at the gamepad screen for instructions.
  11. Tell ddd to go back to the home menu. Return to your PC, extract and place titledumper in a safe spot, and create a bat file where titledumper is at having these contents:"titledumper.exe /vol/aoc ./DLC"
  12. Open up the bat file. Go back to your Wii U, and open the game that has the DLC that you want to dump. The DLC should start dumping to your PC.
  13. Extract CDecrypt to a safe spot. Move the contents of the folder in install folder into the same spot as CDecrypt.
  14. Create a bat file with the following line:"CDecrypt title.tmd title.tik"
  15. Open up the bat file, and the dump should now start extracting.
  16. Once it's finished extracting, go to the meta folder in the game dump. Open up meta.xml.
  17. Look at the entry of title_id. In Mario Kart 8 USA's case, it contains "000500001010EC00"
  18. In the Cemu folder, go to mlc01\usr\title. Create a folder named 00050000.
  19. Look at the last 8 digits of the title_id. Once again for MK8USA, it's 1010EC00. Create a folder with the last 8 digits.
  20. Extract NUSGrabber to a safe spot, and create a bat file with the following: "NUSgrabber (titleid)"
  21. For the title_id, make sure that the 8th character is an E. For MK8, "000500001010EC00" would turn into "0005000E1010EC00"
  22. Open up the bat file, and the update should now start downloading. Afterwards, extract it in the same way with the game dump.
  23. Drag the extracted code, content, and meta folder into the last 8 digits folder.
  24. Create an aoc folder inside the folder with the last 8 digits. Create a content folder inside that aoc folder.
  25. Find where you dumped the DLC, and drag the number folders (ex. 0010) into the content folder.
  26. Open up the game in Cemu, and it should boot up with the update and DLC installed. Enjoy!

Digital copies

  1. Insert your SD Card into your computer. Follow the Starter Pack that was linked. Don't forget to also place ddd onto the SD card.
  2. Safely take out your SD Card, and place it into your Wii U.
  3. Turn on your Wii U, go to the internet browser, go to loadiine.ovh, and choose Homebrew Launcher. Once Homebrew Launcher opens, choose ddd, and open that app up.
  4. (Windows 8 and above) Open up Task Manager, click more details, go to performance, then click on Ethernet/Wi-Fi. Look at the IPv4 address, and enter that into the ddd screen. Look at the gamepad screen for instructions.
  5. (Windows 7 and below) Go to the command prompt on your computer, and type in ipconfig. Look at the IPv4 address, and enter that into the ddd screen. Look at the gamepad screen for instructions.
  6. Go back to the home menu. Return to your PC, extract and place titledumper in a safe spot, and create a bat file where titledumper is at having these contents:"titledumper.exe /vol ./GameNameGoesHere"
  7. Open up the bat file. Go back to your Wii U, and open the game that you want to run in Cemu. The game should start dumping to your PC. This will take a while depending on how large the game is.
  8. Once the dump is done, press the home button. If nothing appears for at least a minute, go back to the Wii U menu. It should dump the meta folder and finish up the game dump.
  9. Once it's finished dumping, go to the meta folder in the game dump. Open up meta.xml.
  10. Look at the entry of title_id. In Mario Kart 8 USA's case, it contains "000500001010EC00"
  11. In the Cemu folder, go to mlc01\usr\title. Create a folder named 00050000.
  12. Look at the last 8 digits of the title_id. Once again for MK8USA, it's 1010EC00. Create a folder with the last 8 digits. Create an aoc folder inside that folder.
  13. Create a content folder inside the aoc folder. Find where you dumped the DLC, and drag the number folders (ex. 0010) into the content folder.
  14. Open up the game in Cemu, and it should boot up with the DLC installed. Enjoy!

both tutorials taken from http://pastebin.com/WVqrbWg2

Compressing game files

Compressing game files is purely optional, but will save tons of space on your hard drive, as most uncompressed size of dumped games are very large (~23,3 GB).

Starting

Update Games and Installing DLCs

Using dumped games

Compatible Files by File Extension
File extension
wud: Wii U Disc Images
wux: Wii U Disc Images
iso: Generic file extension for disc image files.
wad: Wii U Disc Images
rpx: Wii U executable
  1. Start cemu.exe.
  2. File -> Load
  3. Select the file you want to load
To load a wud, wux, iso, wad file:
  • Load the Wii U Disc Images by selecting the image file (wud, wux, iso, wad).
To load a rpx file:
  • Browse to the game folder and open the folder code\ and select the *.rpx file

Shortcuts

Alt + Enter Toggle between windowed or full screen.
Ctrl + Tab Toggle between TV or GamePad display.
Esc Leave full screen
Shift + Print Copy a current-res screenshot to the clipboard

Game settings

Command line option

To start a game via command line, open Command Prompt in the folder (by e.g. Shift + R -> cmd and use cd to open the Cemu dictionary or Shift + RIGHT_CLICK -> Open command window here inside the application folder.)
Arguments:

-g "path" Loads a game
-ud Enable upside-down render mode.
-f Launch in fullscreen mode.
-nsight Allow debugging via NVIDIA Nsight

Usage example: cemu.exe -g "C:\games\example.wud"