When you're making a video game of a sport like darts it must be hard to come up with ways to improve the experience year on year. You'd assume that the mechanic of throwing a dart into a board could more or less be perfected first time around, but PDC World Championship Darts 2009 on Wii is a solid attempt to give fans an improved experience, even if the casual player might not notice much of a difference.
The key things to note this year are dart weight, real life player averages and a completely re-built throwing system. The most important of these three is the throwing system, which while far from perfect does feel somewhat natural once you've got used to what the game wants you to do. You point the Wii Remote at the screen in order to target the area on the dart board you want to hit, hold down A or B to lock that target in place, and then mimic a throwing action with the remote, releasing the button when you want to throw the dart.