There are a ton of awesome games like Clash of Clans. If you don't already know clash of clans, it is a game where you can build a base and attack other people's bases. It gets really addicting and it's so fun! It's also great because it's free!💰
Another game is called Kingdom Rush. Basically there are different rounds or waves of monsters, and you have to survive each wave. It's also free witches nice. This game is kind of like Ballon TD Battles, if you've ever heard of that game.