I’d like to share two game prototypes I made a few years ago. The first one is based on Tetris:
It was written in C++ with bare-bones OpenGL. Once you press shift, the game enters a “fast mode”, where the down button takes a piece all the way down and if you don’t press it for three seconds, it will drop where it is. This is meant to be a fast-paced version of the original Tetris.