DirectX 9.0c "extra" files refer to the optional, side-by-side components included in the DirectX End-User Runtimes (June 2010)
This "Extra Files" pack (v1.10) was a third-party alternative to the official Microsoft redistributables. It packaged these critical legacy components into a single, easy-to-install application for both 32-bit (x86) and 64-bit (x64) systems. Key Components of the Package The installer typically adds support for: D3DX Components: Legacy graphics libraries. XInput & XAudio: Legacy controller and sound support. directx 90c extra files x86 x64
Reinstalling the game often fails because the bundled installer is outdated. The solution is to download the official or later, which contains all x86 and x64 extra files. This package extracts into a folder (e.g., DXSETUP.exe and a DXRedist folder with hundreds of CABs). Running it installs every possible version of every DLL, ensuring any legacy title functions correctly. DirectX 9