Depending on the source, a "crt.7z" archive usually includes:

: PNG or JPEG images with transparency, often accompanied by configuration files for emulators like RetroArch.

: Link the extracted library files in your compiler settings (e.g., in MinGW or GCC).

: Move extracted overlay files to your emulator's overlays or shaders directory.

: Use a tool like 7-Zip or WinRAR to extract the contents.