Pokemon Crush is a hack made from Pokemon Ruby and it is in Spanish, not English. The author, RedMort, is a Spanish himself (maybe this is the most reasonable excuse for the language of this game).
Pokemon Creepy Black is a very strange Pokemon hack made from Pokemon Fire Red. This is not an ordinary hack. Instead, it has a creepypasta along.
Pokemon: Chronicles of Soala is a hack version made from Pokemon FireRed. Its author is a moderator on PokeCommunity some years ago. At the first place, he didn’t intend to do it because it was an April Fool joke.
Pokemon CAWPS is the first Pokemon hack which is never be the same as the others before. Usually, players become a hero-trainer in a Pokemon game and have a mission: save the world from an evil team with a bad ambition, bla bla bla…
Pokemon Blazed Glazed is a “hack in hack” Pokemon version. Why do I say this? Well, because it is a hack made from another hack. Its author, tudou on PokeCommunity, got the permission from another hack of another author named Redriders180.