Unity has evolved to be the perfect MMO and virtual world client, both in the browser and stand-alone. Stream in limitless landscapes as your users travel your universe, customize characters, and load infinite locations and virtual items on demand.

Fig 1: unity tropical paradise demo
When Funcom, makers of Anarchy Online and Age of Conan, decide to use Unity for their upcoming browser based MMO project, you know it has to be good.
SOURCE: unity3d.com
Coupled with the capabilities for wii development unity3D is a must have for indi and pro game developers alike.
Unity Technologies recently announced that it is now supporting the Nintendo Wii console as an authorized middleware provider. The Unity game engine is the cutting-edge choice for creating visually-rich, 3D games for the desktop, Web, and leading mobile devices and video game consoles.

CLICK TO PUBLISH
Ready to run your game on your devkit? It couldn’t be easier. Build it with one click. Run it with another. That’s all! A build supervisor not required.
SCRIPTABLE CONTROLERS
A simple, straightforward, fully-featured remote scripting class lets you read data from the Wii RemoteTM, NunchukTM, and Classic ControllerTM effortlessly.
LEARN MORE
If you are interested in learning more about about using Unity to develop games for the Wii console then please visit the unity website at the following URL:
http://unity3d.com/company/news/wii-press