More "wow" for a lot less "ow". iTween is a simple, powerful and easy to use animation system for Unity.
Focusing on the established solutions and frameworks of projects such as TweenLite, Tweener, and other Flash-based tweening and interpolation systems, iTween is a battle-tested solution for streamlining production in the Unity environment.
If it needs to come alive; it shouldn’t be frustrating. iTween exists to help you reach your goals without making the journey difficult, allowing polish to coexist in tandem with production.
At it's core, iTween is an interpolation system that takes one value and animates it to another over a given amount of time. Where iTween shines is in its action-specific syntax that frees you from a production or coding mind-set and places you in more of an action-movie director position. At the end of the day iTween allows you to command, point, and lovingly coerce, while speeding up nearly every facet of your development process without sacrificing production value.
iTween is a single C# file that can be used with ANY of the programming languages that Unity supports, as well as all versions of Unity. If you program in JavaScript or Boo you will need to create a "Plugins" folder (if you don't already have one) in your “Assets” folder for iTween to live in. If you plan on using C# you can place it anywhere you want within your "Assets" folder. Painless installation but powerful results.
Take a look at the examples page to get a taste of what's possible with iTween and I hope it helps with everything big and small in Unity.