When trying out Zooo one title resounded in my head: Candy Crush Saga! Yes this is the ancestor of this great game and it's also suitable for kids. In normal mode, swap animals and aling three equal to make them disappear and get score. Watch the gameplay video to quickly get the essentials. There are several selectable game modes, and the game comes packed in a nice 5-language suite. Tasty!
Download link for Zooo (Multilanguage)
Size: 5 MB
Platform: any GameBoy Advance emulator