Tetra
A falling-block puzzle (the Tetris family). Seven tetrominoes drop into a 10×20 well from a fair 7-bag; move them with ◀ ▶, rotate with ⟳ (wall-kicks included), and ⤓ hard-drops. Fill a row to clear it; the well speeds up as you level, and it ends when a new piece can't fit. A ghost shows the landing spot and the next piece previews.





