.VDX File Extension
File Type 1Visio Drawing XML File
What is a VDX file?
File Type 2The 7th Guest Video File
This file is saved in a binary format, which requires a specific program to read its contents.
.VDX File Association 2
Video file used by The 7th Guest, an older 3D puzzle game developed by Trilobyte and released in 1993; saves cutscenes and other movie clips played back during the game; can be converted to .AVI video using VDXExt, which is included in The 7th Guest Toolset.