Look. Just because it says “Kids” in the title, that doesn’t mean it’s just for kids. Was “Toilet Kids” just for kids? No. Was “Virtua Fighter Kids” just for kids? No. MC Kids? Survival Kids? Kid ‘n’ Play Make My Video? Of course not. So shut your mouth.
The aim of the game is to get rid of all the shapes that are on the screen. You do this by making two shapes of the same colour touch, which floods the background with that colour absorbing all the other shapes of that colour. Finish off with the colour the screen border is, and you win! Even kids can do it. Not that it’s for kids. Despite my daughter having already completed it. Shush.