As noted, Omega Ruby is a 3DS game. However, the GBA has a massive library of that reimagine modern Pokémon games in the 2D, tile-based style of Ruby/Sapphire/Emerald . Searching for "GBA" here confirms the user wants a demake or fan game, not the original 3DS title.
Contiene criaturas desde la Gen 1 hasta la Gen 9. pokemon omega ruby 14 rom 0 gba espanol