(Marius had said something something sheepish about generator.x being too processing-centric, so here’s one for the contrarians.)

I downloaded, installed, and made a simple side-scroller game using this kit in 3 days. It’s got a simple color model, loads JPGs, nice input abstraction, example code, and clear tutorials. Hell of a lot easier than Win32. Or GLUT, for that matter. Haven’t done Tcl/Tk.

In particular, libsdl is nice because the installation is tidy– you don’t have to install, for instance, Perl, Python, SQL, zlib, libJPEG or Ruby. Just the one binary.

Link to libSDL home