Needless to say, game development is not easy, you must have professional and technical knowledge of programming along with a well professional game development engine to accomplish your task. A smart developer is not relying on a particular type of game engine, he decides the selection criteria of the game engine based on the need or target he wants to achieve. Game engine selection is one the most crucial hassle in terms of development. There are many well-known and best game engines in the market but the most common are unity and unreal. If you plan to hire mobile game developer or you can do the development yourself unity is the best choice. The unity game engine is developed by Unity Technologies. The best thing about the unity engine is beginner-friendly and you can use it without paying a single penny.