Installation

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Please note that this page is devoted mainly to the PC versions (Windows, Mac) of Oni, as the PS2 version doesn't really require any instructions.

Obtaining

Demo

You can get the Windows demo HERE, and the Mac demo HERE, repackaged for modern computers. There is no demo for the PS2 version.

Retail

The Windows and Mac versions are no longer available to purchase new, but are often for sale secondhand on eBay and Amazon. The PS2 version is still sold by Rockstar here.

Installation process

After installing retail Oni on a modern OS, you will need to install a patch of some kind to run it. The original demos also require patches to run. However, the repackaged demos (linked to above) come with the needed patches, so the "Patches" section below does not apply.

After following the instructions below to install a retail copy of the game, see the Patches section, then check out the Troubleshooting page if you still encounter problems.

Windows

When the Oni CD is inserted, the installation will automatically start with the following steps :

  • Language selection: for example, if you happen to have the European TakeAdvantage edition of Oni, you can choose between English/German/French
  • Installation process itself: usual stuff (software license agreement, installation folder selection...)
  • Installation of DirectX/OpenGL: skip this, as the versions of DirectX or OpenGL provided with Oni are very old.

A shortcut is automatically generated and placed on your desktop.

Mac

The installer requires Mac OS 9 to run, so simply open the CD and drag the "Oni ƒ" folder to the desired place on your hard drive. It's recommended that you then rename the folder to simply "Oni". See the Patches section below to get the right version of the Oni game application for your system. If Oni still does not run properly, see Troubleshooting.

Installation notes

All of Oni's files will be found in C:\Program Files\Oni on Windows, and wherever you dragged the folder to on the Mac. The name of the folder does not have to be "Oni" and the Oni application can be renamed, too, but it is not recommended (some community tools expect the app to be called by its original name). Look at this page for a listing of the files you should have and a description of what they do.

Windows

  1. Oni does not create any important registry entries, so an installation of Oni is essentially a copy of the Oni folder; this makes it easy to back up Oni before experimenting with it (hint, hint!).
  2. Retail versions of Oni sometimes check for the installation CD. You can get rid of the CD check using the Oni.exe that gets installed automatically by the AE (found here). Otherwise, you need to have an Oni CD in the drive in order to play (any CD will do as long as its volume name is "ONI").
  3. If Oni.exe is opened by double-clicking it or its shortcut, it first looks for the GameDataFolder in the same directory as the EXE. If Oni.exe is launched from the command line, it first looks for the "GDF" in the directory of the command or .bat that called it. Wherever it starts looking, Oni will also look for a folder in that directory called "OniEngine" and look inside there too for a GameDataFolder. If neither location contains the GDF, Oni progressively checks the parent directories, all the way up to C:\ if necessary, looking for the GDF (or an OniEngine folder with the GDF inside) at each level.

Mac

  1. The Mac app never checks for the Oni disc in the CD-ROM drive.
  2. When opened, the app first looks for the GameDataFolder in the same directory as itself. If the "GDF" is not found there, it continues to look in each parent directory up to the root of the hard drive. Unlike in Windows, the app does not look for "OniEngine/".

Patches

Retail Oni will not run on any modern computers without a patched game application. For the sake of historical completeness, below is a table of Oni's compatibility with every version of Windows and the Mac OS going back to the minimum required OS that was listed for Oni when it launched in 2001. If you still encounter problems after following these directions, see the Troubleshooting page.

Windows
Version Notes
Windows 98, 2000, ME The original version of Oni should work out of the box.
Windows XP, Vista, 7 A crashing bug began to manifest in Oni around the time of XP. It is fixed by installing the Daodan DLL by itself or by installing the AE modding framework, which includes the DLL.
Windows 8, 10 As above, install the Daodan DLL. Starting with Win8, however, you may experience mouse-pointing issues, which requires turning off display scaling for Oni. See the Troubleshooting page if you don't know how to do that.
Macintosh
Version Notes
Mac OS 8.6-9.x The original version of Oni should work out of the box.
macOS 10.0-10.5 Use the community-patched version of Omni Group's "Mac OS X port" found HERE.
macOS 10.6 Use the archived Feral Interactive build of Oni for Intel Macs found HERE.
macOS 10.7-10.12 Use the latest Feral Interactive build of Oni for Intel Macs found HERE.

Customization

For information on customizing the controls and making other changes to Oni's settings, see Customizing.

Mods

The community has produced a number of mods. You can browse the mods on the Mod Depot, but you might just want to start at the Anniversary Edition page since mods are generally installed through the Anniversary Edition's Installer.

The central introduction to making your own mods is found HERE.