ZenGL - cross-platform game development library written in Pascal, designed to provide necessary functionality for rendering 2D-graphics, handling input, sound output, etc. More details can be found
here.
Supported OS: GNU/Linux, Windows, MacOS X, iOS, Android
Supported compilers: FreePascal,
Delphi
Graphics API: OpenGL, OpenGL ES 1.x, Direct3D 8/9
Sound API: OpenAL, DirectSound