Always ensure your antivirus is active when browsing ROM sites, and never download .exe files disguised as games. A legitimate ROM hack will always be a .gba file or a patch file.
Once patched, you can play the game on your PC using mGBA or on your mobile device using MyBoy! . Why Play the "Completed" Version? download 18 pokemon pigment ruby completed exclusive
You will need a clean "1.0" version of the original Pokémon Ruby (USA) ROM. Always ensure your antivirus is active when browsing