Unity (game engine)

Unity is a type of game engine that was developed by a video game development company called Unity Technologies. The Unity engine allows developers to make both 2D and 3D games.  It currently supports only the C# programming language. It supports Direct3D, OpenGL, OpenGL ES, Metal, Vulkan, and proprietary API. Since 2016, Unity offers services on the cloud.
Unity is supported on Windows and macOS, as well as 27 more platforms. In 2016 Unity changed from one time purchase into a subscription model. There currently exist one free and three paid licensing options: Personal (Free), Plus, Pro, Enterprise.
Unity has a robust collection of official tutorials to help familiarize new developers with the engine. Additionally, it has thorough documentation that they update to be accurate with each new Unity release. The tutorials and documentation make use of pre-built assets that are available in the default Unity program. Developers can use these instead of being forced to write all of their code from scratch.