An attempt to fill in the void of affordable/open-source MMO engines written in C#. Newly updated using XNA, Lidgren and a custom physics engine. Checkout the ForgeRealm project which we have now merged with.
Fully customizable server emulator for the 'DOOMVAS' engine used in online games like Nexus TK (www.nexustk.com) and Dark Ages (www.darkages.com) written in C# .NET 3.5.