I am sitting in on a presentation at MIX, “Silverlight as a Gaming Platform” by Joel Neubeck and Scott McAndrew of TerraLever. They created a very cool scrolling puzzle game using Silverlight 2 Beta 1, named Tunnel Trouble, which is currently available on Miniclip.com. Miniclip is probably the most popular casual games site on the internet. I don't think Miniclip is allowing the game to be found through their search function yet, so I'm not even sure they will keep the game accessible...

The game is a tile-based scroller inspired by Valve’s Portal (part of the Orange Box), in which a beaver needs to rescue his children in an underground maze. The designers used TileStudio to design the tile-based levels. Very cool!