One of the first games I played over blockchain and still been playing is cryptogalaxy. It's a mobile only game.
It's a Strategy based games where you buy robots to mine on planets owned by yourself or others. If you are rich, you can buy a planet for yourself.
The game is in Zeepin blockchain and has its own GALA tokens. If you'd like it I can provide you my invitation code, as it's a compulsion to sign up.