3. `move_x`: Simulates gravity in a column. 4. `move_y`: Reorganizes the matrix by shifting columns leftward when a column becomes empty. 5. `play`: Executes a single move, updating the matrix and ...

and all of the LEDs on the matrix are individually addressable. Snake requires five buttons to handle the input options and a button to reset the game. External pull-down resistors are needed to ...