Gather the ultimate Pokemon and use their Mega Evolutions in this fun ROM hack for the classic role-playing game - Pokemon Omega Ruby! Pokemon Omega Ruby is a 2014 ROM hack of the original Pokemon strategy RPG - Pokemon Ruby for the Game Boy Advance (GBA). In this ROM hack, the story remains mostly the same with a few changes and improvements. However, the game features Mega evolutions along with some new sprites and minor improvements. The game highlights the Mega Evolution of the 22 Pokemon that makes these Pokemon stronger than ever and will even learn new moves.