Got a little question here, but nothing technical

Hi all, long story short, I have a niece who's addicted to Tab Games (not my fault), may it be an Android or iPad.

I'm trying to redirect her attention from Tab Games, and I'm starting to shift it to PS4 CO-OP games (she has a little sister, who's getting influnced by her. so I decided CO-OP games so they will not fight - my way of curing their battle over a single Tab).

I have very few knowledge of what games can be played by 2 little girls in split screen. So if you know...

Got a little question here, but nothing technical