File Type Reference

File types in game archives (v9.00)

Extension Count Description
.ogg 292,881 Audio (Ogg Vorbis) – music, sound effects, voice
.xpm 72,427 Egosoft packed texture format
.xmf 40,157 Egosoft mesh format (3D models)
.jcs 31,756 Compressed data (JSON)
.gz 10,884 Gzipped data (textures, shaders)
.xml 6,391 Game data, scripts, configuration
.ANI / .ani 2,448 Animation files
.wav 1,678 Audio (WAV)
.xsm 1,116 Egosoft skeletal mesh animation
.xac 471 Egosoft actor format
.psb 418 Particle system binary
.glsl 290 OpenGL shader source
.dds 93 DirectDraw Surface textures
.lua 81 Lua scripts (UI)
.xsd 41 XML Schema definitions
.xpl 81 Compiled Lua (proprietary)
.dae 19 COLLADA 3D models

Most commonly modded file types

  • .xml – scripts, libraries, configs (can be diff-patched)
  • .lua – UI scripts (must be replaced entirely or function-patched)
  • .ogg – audio replacements
  • .dds – texture replacements


x4cat — MIT License

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