I have started to design a game. I have weighed up the options of XNA, Unity, and Silverlight. I am going with Silverlight... Is there anything I important that I am missing that I need to know?
I sketched the structural design yesterday: http://carnotaurus.tumblr.com/post/4921541502/old-school-game-to-be-written-in-silverlight
Not to repeat the game specifications at great length, a description of the 2D old school game can be found here: What approach would you take to develop an old school game?