Oni (folder)/GameDataFolder

GameDataFolder (commonly called "GDF") is a subfolder of the main Oni folder. It holds the following:

• Oni's game data, in binary format (see OBD for more info)
• the level logic, in plain-text (in the IGMD subfolder; see BSL for more info)
• the intro and outro animated sequences, in the Bink video format

First we show the purpose of each file in this folder – but don't miss our helpful notes below this directory listing.

Directory listing

You should have all the files below in your GameDataFolder, though the movie files are optional (see note at bottom). The "PS2" column shows the numbers assigned to each file name on disc; the .raw and .sep file for each level are in subdirectories titled 20/ and 21/. Beside each set of level files, we list the subfolders of IGMD which hold the corresponding level logic. SPOILER WARNING: The "Chapter" column links to summaries and analyses of Oni's storyline.

File name			Level logic folder	Chapter	Location (seen in Load Game dialog)
Windows	Mac	PS2
IGMD/		1	--	Contains all level logic
intro.bik		2	--	Movie plays when Oni is launched
level0_Final.dat level0_Final.raw	level0_Final.dat level0_Final.raw level0_Final.sep	3 20/1 21/1	IGMD/global	Used in all Chapters (see notes below on "level0_Final" and "IGMD/global")
level1_Final.dat level1_Final.raw	level1_Final.dat level1_Final.raw level1_Final.sep	11 20/9 21/9	IGMD/EnvWarehouse	0: COMBAT TRAINING 1: TRIAL RUN	TCTF Training Syndicate Warehouse
level2_Final.dat level2_Final.raw	level2_Final.dat level2_Final.raw level2_Final.sep	12 20/10 21/10	IGMD/manplant	2: ENGINES OF EVIL	Manufacturing Plant
level3_Final.dat level3_Final.raw	level3_Final.dat level3_Final.raw level3_Final.sep	13 20/11 21/11	IGMD/lab	3: PUZZLE PIECES	Bio-Research Lab
level4_Final.dat level4_Final.raw	level4_Final.dat level4_Final.raw level4_Final.sep	14 20/12 21/12	IGMD/Airport	4: TIGER BY THE TAIL	Airport Assault
level6_Final.dat level6_Final.raw	level6_Final.dat level6_Final.raw level6_Final.sep	15 20/13 21/13	IGMD/Airport_III	5: HOT PURSUIT	Airport Cargo Hangars
level8_Final.dat level8_Final.raw	level8_Final.dat level8_Final.raw level8_Final.sep	16 20/14 21/14	IGMD/tctf	6: COUNTERATTACK	TCTF Regional HQ
level9_Final.dat level9_Final.raw	level9_Final.dat level9_Final.raw level9_Final.sep	17 20/15 21/15	IGMD/power	7: A FRIEND IN NEED	Atmospheric Conversion Center (exterior)
level10_Final.dat level10_Final.raw	level10_Final.dat level10_Final.raw level10_Final.sep	4 20/2 21/2	IGMD/power_II	8: AN INNOCENT LIFE	Atmospheric Conversion Center (interior)
level11_Final.dat level11_Final.raw	level11_Final.dat level11_Final.raw level11_Final.sep	5 20/3 21/3	IGMD/state	9: TRUTH AND CONSEQUENCES	Regional State Building
level12_Final.dat level12_Final.raw	level12_Final.dat level12_Final.raw level12_Final.sep	6 20/4 21/4	IGMD/roof	10: CAT AND MOUSE	Rooftops
level13_Final.dat level13_Final.raw	level13_Final.dat level13_Final.raw level13_Final.sep	7 20/5 21/5	IGMD/dream_lab	11: DREAM DIVER	Doctor Hasegawa's Lab
level14_Final.dat level14_Final.raw	level14_Final.dat level14_Final.raw level14_Final.sep	8 20/6 21/6	IGMD/neuro	12: SINS OF THE FATHER	TCTF Science Prison
level18_Final.dat level18_Final.raw	level18_Final.dat level18_Final.raw level18_Final.sep	9 20/7 21/7	IGMD/tctf_ii	13: PHOENIX RISING	TCTF Regional HQ (redux)
level19_Final.dat level19_Final.raw	level19_Final.dat level19_Final.raw level19_Final.sep	10 20/8 21/8	IGMD/compound	14: DAWN OF THE CHRYSALIS	Syndicate Mountain Compound
outro.bik		18	--	Movie plays when Oni is beaten

Notes

"Missing" levels

Players in 2001 were puzzled when they first installed Oni and looked inside GameDataFolder to find that there were strange gaps in the file numbering: specifically there's no level5, level7, level15, level16 or level17. There isn't something wrong with your installation: the game's content was reshuffled late in development and Bungie West apparently felt it would be too dangerous or disruptive to re-number the level files. The existing files tell a complete story from Chapter 1 to Chapter 14.

level0_Final

The level 0 data is only loaded once, when Oni starts.

intro.bik, outro.bik

• The movie files are not needed for Oni to run. You can thus rename or remove intro.bik to avoid the need to click through the movie.

• When the game is beaten and outro finishes playing, the game will quit. Sometimes players think that the game has crashed, but this is by design. Note that if you remove outro.bik, Oni will quit immediately after beating the game.

• A bug currently exists where the ending movie plays only its sound, with the screen remaining black. You will have to play outro.bik by double-clicking it if you want to watch it. See next point.

• Epic Games Tools, the makers of the Bink video format, offer standalone apps for all platforms if you want to watch the .bik files on their own. However ffmpeg also understands the Bink format, meaning that you can use VLC or another ffmpeg-based client to watch the movies.

How Oni finds its GameDataFolder

In Windows, Oni's engine first looks in the working directory (aka "."). If ".\GameDataFolder" is missing, Oni tries parent folders all the way up to the root (e.g., it looks for "C:\Program Files\Oni\GameDataFolder", then "C:\Program Files\GameDataFolder", then "C:\GameDataFolder"). As a last resort, it looks for ".\OniEngine\GameDataFolder" the same way.

The Mac Oni app follows the same search pattern for GameDataFolder/, but does not look for OniEngine/GameDataFolder/.