Technical difficulties may occur while playing Yume Nikki and its fan games. Below are some common issues and instructions on how to fix them.  

Unzipping ProgramsEdit

Windows Edit


  • Simply Download the type for your computer

There are many unzipping programs you can use to unzip fangames, but it is highly suggested to download 7-Zip, because any other programs will mess up Japanese file names, and some you need to pay, or has only a demo version when 7-Zip is virus free and free to use!. You will need to set correct locale (in system settings or via locale emulator) in order to extract non-Unicode archives (most of zip ones).


For unzipping Chinese fangames it is best to use HaoZip, as it will keep the Chinese characters from messing up during extraction. It is completely free to use and virus free.


A free unzipping program that can change the code page easily (without system locale changes or locale emulators) and support many formats. (If your game's locale is Japanese, click Code Page on the upper right and choose Japanese to change the code, check the preview then extract the file)

Japanese SupportEdit

Most Yume Nikki fangames are Japanese, and coded in Japanese Locale, s for systems other than Windows, so you may need to use Wine or some other program to get a game working on Mac or Linux.

Windows XP or belowEdit

You must ABSOLUTELY have Japanese Locale (the last option on Applocale) on EVERYTHING. When extracting, use Applocale. When booting the game, use it. If you feel more comfortable, you can set your system's locale to Japanese instead of using Applocale.

Installing East Asian Languages on Windows XPEdit

NOTE: You must have your Windows XP installation CD or at least the necessary files. These can also be downloaded from Microsoft, but pirated OS's must stay far away from it.

  • Enter the Control Panel, then go to Date, Time, Language and Regional Options, and finally to Regional and Language Options. Sometimes you will be able to go directly to the Regional and Language options depending on your Control Panel display.
  • I386folder-0

    Select the path where the folder is located so Windows can copy the necessary files.

    Click on the Languages tab and check the Install East Asian Languages box under Supplemental language support.
  • Insert your OS installation CD and click Ok. If you don't have the installation CD, but have the /i386/ *NOT sure about this, since I have the Service Pack 3* folder with all the necessary files somewhere, click Ok and select the path where the folder is.

Downloading and using Microsoft ApplocaleEdit

Microsoft Applocale is a useful tool that 'emulates' another language's locale, so you can use programs in different languages without changing the whole computer's locale. It can be downloaded here.

After installed, using Applocale is very simple.

  • When you open the program, it asks if you want to add or remove programs or launch an application. Select the Launch an application box and then browse for the one you want. IMPORTANT NOTE: Applocale won't locale .rar and .zip files, so you'll have to search for your WinZip or WinRar .exe, and from there export your files. DON'T forget to always extract things with Japanese locale!
  • It then asks the language you want. Select the last one, or 日本語. That's Japanese.
  • It will then ask if you want a shortcut to the application. I usually make shortcuts for the games' RPG_RT.exe and for WinRar, so I won't have to do all the previous steps every time I want to play.

Just remember to use it EVERYWHERE related to Japanese games.

Microsoft Applocale alternativesEdit

Microsoft Applocale may not work with the latest versions of Windows. In this case you can try one of these programs:

Changing the System LocaleEdit

If you would rather change your whole computer's locale to japanese instead of using Applocale, do the following:

  • Go to the Control Panel and then Regional and Language Options.
  • Click on the Advanced tab.
  • Under System current locale, select the language from the drop-down list.

RPG Maker Run-Time PackageEdit

To play most of the fangames, you will need the RPG Maker 2000 Run-Time Package, RTP for short.

  • (If the installation stops at 44% with an error, you most likely forgot to extract it with Applocale, or Applocale doesn't work on your system.)

Missing File ErrorsEdit

Most of the time, an error will come up for a missing file, sometimes its a specific file in game, but most of the time it's a few RTP files that aren't used in-game, but are part of the RPG Maker engine.

Here is an album of common missing files

Missing Files Edit

WOLF RPG EditorEdit

WOLF RPG Editor games didn't need any of the RTP or extra download. After you downloaded the game, remember to extract the file with Japanese encoding, then use Microsoft Applocale to open the start button.

Other problemsEdit

I'm using Windows Vista and the game doesn't work!Edit

If you have any troubles with making any games work on Vista, you can try these:

  • Right-click the application and click on Properties.
  • Click on Compability and select Windows XP Service Pack 2 (?).
  • Click Ok.


  • Right-click the application
  • Click on Advanced
  • In the Dialog window, check the box Run As Administrator.

If neither of those work, you could always try running to the hills.

My character keeps going up without me pushing any buttons!Edit

This is a common problem in RPG Maker games, from 2000 to VX. The reason as to why this happens is still a mystery, but you could try one or all of the following:

  1. Try using the arrow keys on the numpad. These can usually regain control of the character.
  2. Reboot your computer.
  3. Turn your computer off for some minutes. Let it cool down, take a breath.
  4. Stay away from RPG Maker games for a while, even after rebooting.
  5. Reinstall RPG Maker (if you're using it).
  6. Reinstall the RPG Maker RTP of the game you're trying to play.
  7. Try to run the game with your computer in safe mode (click run, write administrative tool, click on system configuration, boot, boot options, safe boot, and select active directory repair then reboot your computer). If the problem continues, try to disconnect your computer from the internet or try with the minimal boot option. Note: to restore your computer to normal boot, repeat the steps and uncheck safe boot.
  8. Unplug peripherals such as webcams and joysticks.

Again, if those don't work, running to the hills sound like a good idea.

It's kind of laggy... / Fullscreen and Window ModeEdit

Size true

The game's ACTUAL resolution.

This is so common I don't even. The resolution most people use is actually x2 of the original, which might make the game lose its smoothness. Most people also don't realize they're playing it on x2.

There's some solutions to it:

  • Pressing F4 toggles Fullscreen on/off. If you start fullscreen and you don't want it, pressing F4 will help you. If you want to go back to fullscreen, F4 is your friend.
  • Alternatively, pressing Alt + Enter also toggles fullscreen mode on/off.
  • F5 toggles screen size from x1 to x2. Pressing F4 to leave fullscreen will, in most of the times, leave you with x2, as well as playtesting it from RPG Maker also gets you x2.

BGM (Background Music) Isn't Playing in RPG Maker 2000-2003Edit

Go to Control Panel and double click the "Sound and Audio Devices" icon. Then under the Audio tab, under Sound Playback, click the "Volume..." button. Once the screen pops up, just increase your "SW Synth" volume tab. You should be able to hear music in RPG Maker 2000-2003 now. (Taken from link)

DirectDraw Error (DDERR_UNSUPPORTED)Edit

This error most commonly occurs with games that open/try to run on fullscreen.

  • Right-click on the start up file (ie. RPG_RT.exe) and select Properties in the drop-down menu.
  • Click on the Compability tab in the Properties box.
  • Tick the box that says: Run this program in compatability mode for: [whatever OS is given by default].
  • Optional: Tick the box that says: Run in 640 x 480 screen resolution
  • Click OK or Apply and exit.

You should be now be able to run the game (in fullscreen) without crashes.

External LinksEdit

Uboachan Thread Edit

(A helpful thread with basic instructions also, and where you can request further information on any error not listed here or on the thead.)