Dreamcast Games Highly Compressed !!top!! -

This is often found within the MAME tools package or dedicated emulator utility sites Batch Process: chdman.exe script in your game folder. The script will take your folders and turn them into single, tidy specific script

A modern, lossless compression format designed for emulators like Redream or Flycast . dreamcast games highly compressed

While primarily for GameCube/Wii, some modern multi-system setups may encounter this. This is often found within the MAME tools