Duality is a modular 2D game engine / editor combo, written entirely in C# and built on top of an OpenGL backend. It's open source, features an open architecture that invites extensibility and technical ownership, and it embraces C# as a language rather than a scripting...
Stride (formerly Xenko) is an open-source C# game engine designed for the future of gaming. It comes with a full toolchain and is especially well suited to create realistic games but allows you much more!.
One framework for creating powerful cross-platform games. The spiritual successor to XNA with 1000's of titles shipped across desktop, mobile, and console platforms. MonoGame is a fully managed .NET open source game framework without any black boxes.
UrhoSharp is a lightweight Game Engine suitable for using with C# and F# to create games and 3D applications. The game engine is available as a portable class library, allowing your game code to be written once and shared across all platforms.
Free and open-source, cross-platform 2D game engine written entirely in C# and based on MonoGame/XNA with additional features on top such as:
cocos2d-x is a cross platform open source free 2D game engine for mobile gamedev, that is fast and stable, easy to learn and use.
raylib is a game development library highly inspired by Borland BGI graphics lib and by XNA framework. Made as a simple and easy-to-use library to enjoy game programming.
SpriteKit is a general purpose Metal framework to draw images, animations, text and shapes in macOS, iOS, tvOS and watchOS applications and also provide a physics library and scene management that make it perfectly capable to support game development. Officially this framework is available only for the Swift programming language and Xcode. However, Visual Studio 2022 for Mac now offer a C# template and bindings to program SpriteKit applications and games in C# and Visual Studio for Mac.
Flax Engine is claimed the most agile game engine. It's open source, cross-platform and it lets you write scripts in C++ and C# seamlessly. Also focused on lightweight development. A true game changer.
Godot Engine is a feature-packed, cross-platform game engine to create 2D and 3D games from a unified interface. It provides a comprehensive set of common tools, so that users can focus on making games without having to reinvent the wheel.
The most powerful game development platform is now available to everyone. Full engine source code. All features. No royalties. No obligations. No license fee.
NeoAxis 3D Engine is positioned as a universal development framework for 3D projects. The framework can be applied when developing various types of 3D projects, such as the creation of video games, development of simulators, virtual reality and visualization software, creation...
Real-time 3D engine enabling collaboration to create immersive, interactive experiences on Windows, Mac, and Linux, with extensive platform support.
There is a project out there called Retyped that allow us to access selected JavaScript frameworks from C# and Phaser2 is one of them. We can develop HTML5 games in C# using Retyped and Phaser: https://www.nuget.org/packages/retyped.phaser Demo: https://demos.retyped.com/dist/phaser/
