Welcome to Tetris 99 block edition! Game controls are as usual: Move using left, right, and down arrow keys; rotate using up arrow key. Fill up rows to "clear" them and earn points. The more rows you clear with a single Tetromino, the more points you get! Each Tetromino will fall a little bit faster as the game goes on.
All coding by me. Done in just 99 blocks of code! Credit to @Deuzz for creating this coding challenge.