Columns of three coloured gems fall in, reorder them on the way down and stack matches in any direction to keep the well from filling.
Each piece is a vertical stack of three gems. Slide it left and right and cycle the order of the three gems, then drop it onto the pile. Line up three or more of a colour horizontally, vertically or diagonally to clear them and prevent the well from overflowing.
Prism Drop draws on the falling-gem puzzle of 1990, columns of three jewels drop in, and you cycle their order to line up three or more in any direction, diagonals included, chaining cascades as they clear. A slick variation on the falling-block puzzle.
Prism Drop is an original free browser falling-gem puzzle with three-gem columns and any-direction matching across three difficulty levels. No install required.