How many tetris games must we suffer through? This is a knockoff with no frills, that is nice no annoying music. However so many others have done it so much better.
If this is your first game, it's a good 'Hello World!' I would add a start menu screen so that it does not throw the player directly into game play. This will give them a moment to see the controls you included in your instructions. Many breakout style games can be wasd, arrow, or mouse. The player can learn the controls prior to playing this way.
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