Are there any really good pokemon Romhacks out there? - eviltoast

Title. Ideally I’d like one that has pokemon from all the generations, and reasonably difficult.

Main reason I’m looking into romhacks is because I don’t want to pay $60 for a game that’s designed to be easy for 3-7 year olds, I’d like a bit of a challenge.

If it has furry stuff that’s a bonus