Pokemon Marble is really a professional Pokemon Hack Game. If you often play Hack ROMs, you will know Pokemon Quartz and Baro.
Pokemon Liquid Ocean is an amazing Pokemon ROM Hack of Pokemon Fire Red. You play in the new region Soala.
Pokemon Liquid Crystal is a hack based on Pokemon Fire Red ROM but it is truly a wonderful remake of GBC Pokemon Crystal.
Pokemon Lightning Yellow is a ROM Hack of Pokemon Fire Red with some changes. Pikachu, Eevee are the Pokemon Starters.
Pokemon Light Platinum is one of the most popular Pokemon ROM Hacks ever. There are 2 Language Versions: English and Portugal.