Closed source, free multiplayer browser game (WebGL graphics inside browser), written in C# - in progress, playable.
Star Trader is a open ended space (SciFi) game in progress. The player starts as a pilot of a small space vesell and works its name up into the hall of fame.
Due to limited free time the game has much less features than I was hoping for. You can have a sneak peak with the demo/demo account, but be warned - the game has down times when I am working on it.