Steamworks.NET is a C# Wrapper for Valve's Steamworks API, it can be used either with Unity or your C# based Application. Steamworks.NET was designed to be as close as possible to the original C++ API, as such the documentation provided from Valve largely covers usage of Steamworks.NET. Niceties and C# Idioms can be easily implemented on top of Steamworks.NET. Steamworks.NET currently fully supports Windows, OSX, and Linux in both 32 and 64bit varieties. Currently building against Steamworks SDK 1.46.