Unity is a closed-source engine with many built-in functions, which is used to develop games in 2D/3D graphics. Unity technologies introduced and released it in 2005 at Apple Inc. worldwide Developers Conference.
Initially, it is exclusively a macOS X game development engine. But later, in 2008, it was upgraded and extended to support more than 25 platforms. As a developed and well-structured game engine, it comes with all built-in features, which helps you make a game of your imagination.
Now the Unity app development is not just a game development. With its powerful tool animation, currently, the most developed world industries like film, video games, architecture, engineering, construction, and the automobile used it for their benefit to make their work easier.
Most importantly, unlike other applications, 3D Unity mobile development comes with a free version. It attracts more developers towards it, as they can introduce the most attractive and imaginative games to the market without paying for the software and earn money.