Unity 3D has number of useful tools which makes our game development easy and interactive,which we use through IDE.Some of the major components we will be using throughout game development in Unity include:

1)Toolbar-It remains at the top of IDE and contains important manipulation tools for the Scene and Game Windows. It also holds the Play button used when you want to test out the environment you have created.

2)Scene View-Building and editing of the components of our game are done here.A fully rendered 3-D preview of the currently open scene is displayed and allows us to add, edit, and remove GameObjects.

3)Hierarchy-It displays list of all game objects ,we are using in the current scene. If we select an object within the Hierarchy it is also selected within the Scene view and vice versa. New objects can be added to the Hierarchy via the Create menu.

4)Project Window-It contains Assets directory for all models, textures, scripts, and prefabs used within project. In large, complex games, the Project Window makes it easy for you to search for specific game assets as needed.

5)Game View-It is most interesting part where we can actually play our game and test the look and feel of our game.Most important,while playing our game we can also make changes at the same time.Very few (if any) other game engines allow for this functionality and it truly sets Unity 3D apart from other game development engines.