Some important Unity 3D components include:

► Toolbar: It features several important manipulation tools for the scene and game windows.

► Scene View: It is a fully rendered 3 D preview of the currently open scene is displayed and enables you to add, edit and remove GameObjects

► Hierarchy: It displays a list of every GameObject within the current scene view

► Project Window: In complex games, project window searches for specific game assets as needed. It explores the assets directory for all textures, scripts, models and prefabs used within the project

► Game View: In unity you can view your game and at the same time make changes to your game while you are playing in real time.