Lumines: Puzzle Fusion is a falling block puzzle game.[2][3] The objective is to arrange grouped blocks descending from the top of a 16×10 grid playing field to create single-color squares once they have landed.[4] Grouped blocks have a 2×2 shape and vary between two colors.[2] Players can rotate the descending grouped blocks, move them left or right, or drop them straight down.[2][3] When part of the grouped blocks hits an obstruction, the remaining blocks separate from the rest and continue to fall.[5] A single-color square is created when grouped blocks form a 2×2 shape of matching color. Additional blocks of matching color can be used to create larger shapes.[5] The game ends when the blocks pile up to the top of the playing field.[3][4]