Online Games and Online Gaming
When Nintendo joined the latest generation of consoles in 2006 on releasing the Wii, despite the company's famous innovation they were unable to halt the progress of gaming, and decided to go with the flow and put all their efforts, in terms of multiplayer into the online experience. Here is House of Nintendo's Top 3 online games;

The Conduit
The most recent release on the list, it's offline story-mode is hugely entertaining. Bringing your console online, however, is well worth it as The Conduit has some excellent team and individual matches, using futuristic weapons developed from alien technology or normal, earthly uzis and shotguns!
Mario Kart
This game can be incredibly addictive offline when trying to complete all the championships. It's when you go online though that it becomes one of last decade's best racing and most entertaining racing games, a must-own for the Wii.
Call of Duty: World at War
Top of the list for its nature as an ongoing game which encourages you to develop online, potentially without ever being completed. By rising through the ranks you unlock better weapons with which to wage war and hasten your climb to the top, all in one of the most addictively competitive, and adult, FPS games for the console.