Pokémon Sinister Sun is a romhack of Pokémon Ultra Sun. Like some of my other projects it primarily changes the shiny odds (to 1/100), shiny colors of every obtainable Pokémon and adds some re-typed forms in the new sinister Pokémon.

Other features include re-skinned ride Pokémon, the entire Alola Pokedex being obtainable and most Pokéballs having a new look!