I Would Play the Heck Out of Pokémon Serenity and Anarchy
Artist Bobertbra has created his own concept art for a Pokémon game set in Fontou, called Pokémon Serenity/Anarchy. He's got a partially filled Fakedex, villainous teams, plus trainers and more. Check out some of his concepts:
Dismeth: Dark gym leader Christian and Christina: Normal gym leaders Rosie: Fighting gym leader Winter: Ice gym leader Juliet: Psychic gym leader Wolff: Ghost gym leader Levi: Dragon gym leader Chelsea: Water gym leader Audra: Electric elite 4 member Brynn: Fire elite 4 member Grungy: Poison elite 4 member Dustin: Ground elite 4 member Xavier: Champion, Fairy type master, Prince of Fontou