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REZ File - What is a .rez file and how do I open it?
Learn about .REZ files and view a list of programs that open them.
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Overview
What is a REZ file? A REZ file is an asset archive used by a video game developed using the LithTech game engine. It contains meshes, textures, music, maps, and/or other game assets. Game modders often modify the assets REZ files contain to alter a game's gameplay.
More Information LithTech is a 3D game development engine created by Monolith Productions. Monolith Productions and other video game development companies have used LithTech to create many popular first-person shooter games (and a handful of games in other genres). The following Monolith Productions games, all developed using the LithTech engine, use REZ files: Aliens Versus Predator 2 Blood II: The Chosen Condemned 2: Bloodshot Contract J.A.C.K. F.E.A.R. F.E.A.R. 2: Project Origin The Matrix Online The Operative: No One Lives Forever No One Lives Forever 2 Purge Shogo: Mobile Armor Division Tron 2.0 Some other games that use REZ files include: Piranha Games Die Hard: Nakatomi Plaza Jarhead Games CTU: Marine Sharpshooter Jarhead Games Marine Sharpshooter II: Jungle Warfare Third Law Interactive Elite Forces WWI: Normandy
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DeveloperAmbrosia
Popularity4.3 | 121 Votes
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.REZ File Extension
3 file types use the .rez file extension.
LithTech Game Engine Resource
| Developer | Monolith Productions |
| Popularity |
4.3 | 1273 Votes |
What is a REZ file?
A REZ file is an asset archive used by a video game developed using the LithTech game engine. It contains meshes, textures, music, maps, and/or other game assets. Game modders often modify the assets REZ files contain to alter a game's gameplay.
More Information
LithTech is a 3D game development engine created by Monolith Productions. Monolith Productions and other video game development companies have used LithTech to create many popular first-person shooter games (and a handful of games in other genres).
The following Monolith Productions games, all developed using the LithTech engine, use REZ files:
Some other games that use REZ files include:
How to open a REZ file
You can use Dragon UnPACKer (Windows) to extract the resources a REZ file contains. Additionally, some LithTech engine games include a program named lithrez.exe , which you can use to extract resources from a REZ file.
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Programs that open REZ files
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Platform
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Windows
Dragon UnPACKer
Free
Category: Game Files
Updated: July 24, 2023
FirstClass Resource File
| Developer | OpenText |
| Popularity |
4.2 | 220 Votes |
Resource file used by OpenText FirstClass, a conferencing and emailing program that enables collaboration and communication between users; contains resources that customize the FirstClass interface; includes pictures, forms, icons, and sounds.
More Information
NOTE: REZ files are similar to .FC files except they only hold resources for the FirstClass interface instead of login data.
Programs that open or reference REZ files
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Windows
OpenText FirstClass
Paid
Mac
OpenText FirstClass
Paid
Category: Data Files
Updated: April 1, 2014
Escape Velocity Plug-in File
| Developer | Ambrosia |
| Popularity |
4.3 | 121 Votes |
Plugin file used by Escape Velocity or EV Nova, a series of space adventure games by Ambrosia Software; adds new features, such as new ships, planets, and base stations; may also include new storylines.
More Information
REZ files can be viewed and edited with EVNEW, a free Windows utility available on the Ambrosia website. Note that this utility requires Apple QuickTime to be installed.
NOTE: Ambrosia Escape Velocity and EV Nova have been discontinued.
Programs that open REZ files
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Ambrosia Escape Velocity
Ambrosia EV Nova
Mac
Ambrosia Escape Velocity
Ambrosia EV Nova
Category: Plugin Files
Updated: September 13, 2019