Some games have been created with the Unity Engine. If you want to learn about the engine and what type of games can be built with it, here is a good link to read and learn.
https://unity.com/
ETA: and for some who may doubt it can deliver good graphics check out what games are being created or have been created with Unity engine. A.C. was one if anyone doesn't know, and so was City Skylines. So, the creator working on the new life simulator has the tools (if he wants) to make a graphically pleasing game and it doesn't have to look like a mobile game. Though many mobile and iPad games are being created with Unity. But some other big games such as A.C. and City Skylines were, too.
https://unity3d.com/games-made-with-unity
