33553bf0_Web_oranges__3
[0] Built-in features [Wild Pockets] 1 [Silverlight] 0 [3] 
Wild pockets has a nice phisics engine and an average 3D renderer. I experimented with the beta particle engine. It was nice having all this out of the box. Input handling was pretty easy from keyboard, but a little bit more challenging from the mouse. In Silverlight you either do it yourself or get libraries from around.
Web oranges
3