Tetris for the NES is one of my favourite versions of Tetris. My only complaint is that it lacks the ability to “hard drop” - instantly dropping the current piece and locking it into place. Let’s change that! This post describes a modification I made to NES Tetris so that pressing the “up” button causes the current piece to hard drop, and so that the game renders a “ghost piece” - a dotted outline of the current piece showing where it will land.
