Block

Related terms

• Tetromino →

  A shape made from four edge-connected squares. Tetris uses seven one-sided shapes: I, J, L, O, S, T and Z. Letter names avoid confusion when different games use different colors.

• Board →

  The grid where pieces are placed. A typical modern visible board is ten columns wide and twenty rows tall, with additional hidden space above it. Dimensions and top-out rules depend on the game.