Complex subjects aren't always covered to their full depth. Due to the short length of the videos and some topics that might not be as familiar to Sal Khan, the only presenter on the site, some concepts and ideas get just surface coverage.
Visually-constructed code is translated to the Haxe language and can be inspected as text. Direct Haxe code entry is also supported, but other than a single appendix on the "Code Mode" this is not covered in the Stencylpedia tutorial.
Explains the complete process of making a cross-platform game written in C++ and using SDL. The tutorial starts from the beginning by setting up the environment and goes through the motions to eventually create a cross-platform game.