The game is very simple, but its mostly good! Its kind of frustrating however that the amount of coins you win isn’t enough to unlock all the quizzes, and your forced to view more ads on top of an ad before every quiz, but they’re short and manageable. Gen 1 johto questions are interesting when referring to pokemon types as many are labeled fairy type in the quiz, but fairy didn’t exist back then, which then forced the player to guess in which context the quiz is referring as first. No glaring problems otherwise!
I’m a Pokémon fan and by hear I know Jigglepuff started out as a pure normal type! And on your “hard Kanto” you said it is fairy/normal. That is impossible for gen 1 since fairy types did not exist back then! Also Onix was a pure rock type last time I checked too
In Hoenn-9 in one of the guess the Pokémon says prinplup which is a GEN four Pokémon but Hoenn is GEN three so you should fix it and add a new Pokémon in it if you the creator of this reading