Pokemon Diamond (Hack) ROM Download can be obtained free for Gameboy Color on EmuGames.net only. Play Pokemon emulator game in English for the USA region. Pokemon Diamond is a GBC ROM that you can download to your computer or play online within your browser. You can also download roms such as Pokemon HeartGold Version and Pokemon Black Version that work on all devices including desktop and mobile. Be sure to rate the game if you enjoyed playing this ROM.