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# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
3 File Associations

.REZ File Extension

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File TypeLithtech Game Engine Resource File
DeveloperMonolith
Popularity
4.3 (12 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryGame Files
File Format Description

Resource file used by first-person shooter games that are developed with the Lithtech gaming engine; contains game content, including meshes, textures, music, maps, and other game objects; commonly used to modify game content.

REZ files are used by the following Monolith games:

  • Aliens vs Predator
  • Aliens vs Predator 2
  • Blood II
  • Condemned 2: Bloodshot
  • Contract J.A.C.K.
  • F.E.A.R.
  • F.E.A.R. 2: Project Origin
  • The Matrix Online
  • Noone Lives Forever
  • Noone Lives Forever 2
  • Purge
  • Sanity: Aikens Artifact
  • Shogo: Mobile Armor Division
  • Tron 2.0
Other examples of games that use Lithtech resource files include:
  • Sierra Entertainment Die Hard: Nakatomi Plaza
  • Jarhead Games Marine Sharpshooter
  • Jarhead Games Marine Sharpshooter 2: Jungle Warfare
  • Jarhead Games World War II Sniper: Call To Victory
  • Valumedia World War II: Normandy
Many REZ files may be modified using Dragon UnPACKer, Game Extractor, or WinRez LT Studio. They may also be extracted using the program lithrez.exe, which is bundled with many Lithtech games.

The Lithtech gaming engine was originally developed jointly by Monolith Productions and Microsoft.

Program(s) that open .REZ files
Updated 7/16/2014

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File TypeFirstClass Resource File
DeveloperOpenText
Popularity
3.5 (2 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryData Files
File Format Description

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.

NOTE: REZ files are similar to .FC files except they only hold resources for the FirstClass interface instead of login data.

Program(s) that open .REZ files
Updated 4/1/2014

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File TypeEscape Velocity Plug-in File
DeveloperAmbrosia
Popularity
2.0 (1 Vote) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryPlugin Files
File Format Description

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.

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.

Program(s) that open .REZ files
Updated 10/27/2010