Loving this fangame since I started just two days ago, but I can't help but notice one game design choice that sticks out like a sore thumb amidst a sprawling, content-packed game that is one of the best I've played.
The nullifier items. They're awful. And if I ever gain access to them, I'd feel dirty giving one of 'em to my pokemon. They're extremely unfair, ruining balance kept in check by typing. Certain pokemon are balanced by the fact they have a single, glaring weakness. Remove that, and they are such a hassle to deal with. I haven't encountered one yet, but Salamence with Ice Nullifier seems like an absolute monster.
But the fact that they are there, in all honesty, I feel as though is not the biggest problem. After all, Air Balloon exists. And whether a Nullifier is permanent instead of a one-and-done is also not the main issue as once you find out there is a Ground Nullifier, you won't use another Ground move anyways, like you'd behave against an Air Balloon. The problem is you have to discover a nullifier is being held, whereas an Air Balloon announces itself. This part is the cancerous bit. It doesn't involve thinking, it doesn't involve any strategy. You see a pokemon, you pick an effective move against it, it doesn't work at all, and you just gave your opponent a free turn. That's really annoying.