Jelly Quest Mania is a nice online match 3 game for kids.
Collect the jellies in this fun match-3 puzzle game. Whenever you want to hang out, this game can provide you with the right experience thanks to its cool gameplay. Match three or more jellies of the same type to combine them. Complete all objectives before you run out of time or moves. In each level you play against time and limited moves. Some jellies are locked, free them by making a pair.