Pokemon games tend to retain some beloved features from the existing games and build upon them, such as regional variants in Pokemon Sun and Moon. For example, Pokemon X and Y introduced Mega Evolutions, which were retained in Generation 7 before ultimately being removed in Generation 8 to make room for Dynamaxing and Gigantamaxing. Not long ago Nintendo of America expressed interest in the idea of introducing non-binary Pokemon, which would be different from the existing genderless and Legendary Pokemon, but such a major shift would require changes across the board.