Engine Directory Structure

The Unreal Base Directory

This directory is where the game itself is installed. By default, it's called {drive}:\{game name}, eg C:\UnrealTournament, C:\WheelOfTime etc. Throughout the Unreal Wiki, you'll see it referred to as {Base Directory}. Within this directory there are several sub directories which varies depending on the engine version.

Unreal Engine 3

+{GameName}\ ++Binaries\ ++Engine\ +++Config\ +++Localization\ +++Shaders\ +++Stats\ ++{prefix}Game\ +++Config\ +++CookedPC\ +++Localization\ +++Logs\ +++Movies\ +++Published\ +++Splash\ +++Src\ +++Unpublished\

Unreal Engine 2

+{GameName}\ ++Animations\ ++Benchmark\ ++Cache\ ++Demos\ ++ForceFeedback\ ++Help\ ++KarmaData\ ++Maps\ ++Music\ ++Prefabs\ ++Save\ ++Saves\ ++ScreenShots\ ++Sounds\ ++Speech\ ++StaticMeshes\ ++System\ ++++editorres\ ++Textures\ ++UserLogs\ ++Web\

Exported Script

Unreal Engine 3

Exported scripts for this engine version will go in one of two directories:
{User Documents Directory}\My Games\Unreal Tournament 3\UTGame\ExportedScript

Unreal Engine 2

Exported scripts for this engine version will go in the games {Base Directory}.

The User Directory

In unreal engine 3 things were changed some and it now uses the user documents directory for storing some things. As an example UT3 will use the directory:
{User Documents Directory}\My Documents\My Games\Unreal Tournament 3