Extract text from Unreal Engine packages (U)
To convert U packages to another format, you need Unreal Engine or other Game software.
To convert other file formats to the "Game Script Package File" file type, you need software like Unreal Engine or a similar tool.
The .U file extension primarily identifies an Unreal Engine Script Package created by older versions of Unreal Engine (typically versions 1 through 3). These files contain compiled UnrealScript byte code, game logic, textures, and 3D mesh assets used by classic games like Unreal Tournament, Lineage II, and Killing Floor. A smaller subset of .U files are UnityFS asset bundles used by the Unity engine, or biometric user databases for ZKTeco hardware.
The main disadvantage of the .U format is its heavily proprietary, binary nature. It is deeply tied to legacy game engines and specific game builds. You cannot natively open these files in modern text editors or 3D modeling software without seeing scrambled data. Modders and developers face significant hurdles because reading the bytecode requires specific, often outdated decompilers. Furthermore, if the file is a Unity asset bundle, it is compressed and totally unreadable without specialized extraction tools.
To inspect the code or modify game assets, you must extract and convert the internal data. For viewing raw game scripts, convert the bytecode to TXT or UC (UnrealScript) formats. For extracting textures and meshes from asset bundles, convert to universal formats like PNG or OBJ. Just drag and drop your file here to analyze and convert it securely right in your browser. Our tool can identify the exact internal architecture - whether it is an Epic Games package, a Unity archive, or a proprietary database - and extract the usable files instantly.
Use Convert.Guru to open and convert your U file.
Users also converted PDF, BSM, PCC, USX and G files.
If you want to convert U file to G, MP3, WAV, AAC, FLAC, OGG, WMA, M4A, AIFF, OPUS, ALAC or APE, you can use Unreal Engine or similar software from the "Game Engine Script Package" category. In the File menu, look for Save As… or Export….
To convert MIDI, AAC, TTA, AU, WV, DTS, MID, FLAC, RA, MP3, PCM or WAV files to U, try Unreal Engine or another comparable tool in the "Game Engine Script Package" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our U converter.