Getting Started
Requirements and initial setup.

Requirements

You will be denied support if you are using a pirated copy of OMORI.
OMO CEP for Windows
OMO CEP Lite for Steam Deck
  • A registered installation of 64-bit Windows 11 or Windows 10
  • An unmodified installation of OMORI from Steam
  • At least 1 GB of free space on your drive
OMORI on the Xbox for Windows app / PC Game Pass is not supported.
The Xbox version uses a different engine that doesn't let us add plugins.
  • A Steam Deck running the latest version of the SteamOS software
  • An unmodified installation of OMORI from Steam
  • A USB-C hub with a connected keyboard and mouse
  • At least 1 GB of free space on your system
An external display connected to your USB-C hub is highly recommended.
What are the differences between OMO CEP and OMO CEP Lite?

Show File Extensions

By default, Windows Explorer hides the extensions of file types it recognizes (.EXE, .PNG, etc.). It's important that these be visible when setting up mods or asking for support, so we will make sure Windows always shows file extensions for all file types.
Windows 11
Windows 10
Steam Deck
  • Open a File Explorer window (it doesn't matter where).
  • Click the View button at the top of the window.
  • Click Show > File name extensions.
  • Open a Windows Explorer window (it doesn't matter where).
  • Click the View tab at the top of the window.
  • Check the box labelled File name extensions if it is not checked already.
File extensions are automatically shown in SteamOS Desktop Mode.
Move onto the next step!

Download OMO CEP

If you've already downloaded OMO CEP, skip this step.
  • Open the page for OMO CEP at mods.one/mod/cep.
  • Scroll to Available releases at the bottom of the page and click the download arrow next to either OMO CEP for Windows or OMO CEP Lite for Steam Deck.
What's mods.one?

Next Steps

Have you modded OMORI before?
This is my first time modding OMORI
I'm using OneLoader
I'm using GOMORI
You're all set!
Move onto the next page.
Sounds good. Move onto the next page.
Be aware that some of your mods may not be compatible with OMO CEP.
You will need to reset your game files before continuing.
  • Open your OMORI\www folder.
  • Back up the save folder inside by copying it to another location on your computer.
  • Delete every folder inside the www directory except the folder named save.
Make sure not to delete the save folder!
It contains your save data, and OMORI does not have cloud save support!