RealmForge GDK 3D engine

“The RealmForge GDK is the cross-platform game development platform for .NET. It is written entirely in C# to ensure portability and allow the productivity, flexibility, and dynamic nature of the .NET Framework to be leveraged in all aspects of game development. This middleware is architected with both power and ease of use in mind and is released under the LPGL so that it is the free and ideal solution for both commercial and hobbyist projects.

This game development kit is characterized by its productivity, ease of use, and highly flexible and intuitive component-oriented architecture. This game engine and development environment consists of a framework, rendering engine, run-time development toolset (In-Game Editor), script and media libraries, and a growing showcase of demo games and tutorials which assist in rapid prototyping.”