“The German-Austrian indie games publisher Toplitz Productions and Poland-based indie games developer Render Cube, are today very happy and excited to announce that they have just released the new co-op mode for their middle ages-themed survival sandbox life sim Medieval Dynasty (the said co-op mode is available right now for PC via Steam).” – Jonas Ek, TGG.
Source: N4G PC "Medieval Dynasty has just released its new co-op mode for PC via Steam