MattFiler CathodeLib by: MattFiler .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. 18,545 total downloads last updated 5/11/2026 Latest version: 0.12.0 alien modding alien isolation mod tool file utility Provides support for parsing and writing common Alien: Isolation formats from the Cathode engine.