I am using @EncryptedCoding Pokémon RPG to make a Pokémon game based on Gen 3 and 4, but there were a lot of big changes I had to make! First of all, I added pretty Pokeballs. In Pokémon, the player stays aligned with the tiles, which I had to implement. Animation is also in sync with this. I also had to create a true-to-the-game (Gen 4) input override system, if that's what you call it. Basically, it means that if you're going up and press left while still pressing up, you will switch directions, press P to shoot a Pokeball. The player is aligned with tiles how they are in Pokémon Gen 3 and I will use assets from Gen 3 in the future.
