Welcome to the forums. The problem is in gameBoard:clearRows(). You're basically shifting all rows down, but you're not creating a new empty one on the top. The first time you delete a row, row 2 becomes the same table as row 1. On subsequent times, that reference keeps propagating down, until all ...

The Problem: In my Tetris clone, after some amount of play time, my board state will become corrupted so that when a Tetromino is placed, all the tiles in that Tetromino's columns will act as if they are filled despite no direct calls to fill the tiles. Once the bug occurs, any new Tetromino placed ...