Same idea as 2048, but on a smaller 3x3 board — faster rounds, quicker to master.
Arrow keys (or swipe on mobile) slide all tiles in one direction on a 3x3 grid. Matching tiles merge into double their value. Because the board is smaller than 2048's 4x4, rounds end faster — good for a quick break rather than a long session.
Same merge mechanic, but a smaller 3x3 board instead of 4x4, so the board fills up (and games end) much faster — a quicker, lighter version of the same idea.