Mongo Realm is an object oriented database system that persists objects in cross platform games. It can set or get native application objects (such as in Unity Environment C# objects). It also syncs data to cloud and Realm Instance.
It requries a Realm Object with a unique identifier (an object) within that realm data store. It is a player user id primary key in our case.
It is a simple endless runner game where you control a car in a curved world. Your aim is to drive as long as without colliding any other incoming cars to collect more score.