raylib

Raylib is a simple and fairly low level API for making games.

• homepage
• cheatsheet - (for the C API)
• it has nice C# bindings

Starting a new C# project with raylib

dotnet new console
dotnet add package Raylib-cs

Hello world with this super simple API:

Raylib.InitWindow(800, 480, "Hello World");

while (!Raylib.WindowShouldClose())
{
    // the game loop
    Raylib.BeginDrawing();
    Raylib.ClearBackground(Color.White);

    Raylib.DrawText("Hello, world!", 12, 12, 20, Color.Black);

    // note this method will automatically handle managing the framerate
    //   set the framerate with SetTargetFPS(60) during init
    Raylib.EndDrawing();
}

Raylib.CloseWindow();