KMid2 plays MIDI and karaoke files to hardware MIDI devices or software synthesizers. It supports playlists, MIDI mappers, tempo (speed) control, volume and pitch (transpose) controls, and configurable character encoding, font, and color for lyrics. The graphic views include a rhythm view (visual metronome), a channels window with solo/muting controls and instrument selectors, and a piano player window (pianola).
D'Enfent Engine is a library that contains high-level classes to access OpenGL functions. It contains classes that may be very useful in game development: GUI components, sprite classes, and classes to handle mouse/keyboard events. It has a full API reference, as well as lessons to help you start working with the library.
Bart is a puzzle-style game. In a maze, there is a human and several monsters. The human wants to escape (reach the "exit" point). The monsters, as you may have already guessed, want to eat him for breakfast. The human is in a panic, and you cannot control him at all! He runs in a straight line until reaching a wall, and then turns in a random direction and runs again or explores the maze. One way exists to help the human: you may rotate walls.