The games received mostly positive reviews, obtaining an aggregate score of 81 percent on Metacritic. Most critics praised the fact that the games introduced new features while still maintaining the traditional gameplay of the series. Reception of the graphics and audio was more mixed, with some reviewers complaining that they were too simplistic and lacked improvement compared to the previous games, "Pokémon Ruby" and "Sapphire". "FireRed" and "LeafGreen" were commercial successes, selling a total of around 12 million copies worldwide. Nearly two years after their original release, Nintendo re-marketed them as Player's Choice titles.