Pokémon Altered Emerald

What happens when you take (almost) every move and ability from gen 1 to 7, add some new ones to the mix, and then cram them into just 386 Pokémon? You get an amount of diversity the main games only dream of. Around half the abilities are signature abilities, and moves are no different. You can catch all your favourites here, and you'll find them stronger and more defined than ever before. On top of that, I've rebalanced and re-teamed the trainers and gym leaders, then freshened up every route in Hoenn and added five new ones. And I love the puzzles: they're optional, fair, and absolutely devilish.

Source: TheGamesDB