This is my new game, Mega Memory for Kids.
It is a memory matchup game designed for kids.
Originally written in AndEngine but since last update it is written using LibGDX engine (which is awesome).
It supports realtime multiplayer, achievements and leaderboards using Google Games Services API.
Try it you might like it! 
https://play.google.com/store/apps/details?id=com.knepe.megamemory
