Columns , released for the Sega Master System in 1990, is a puzzle game where players must arrange groups of 3 same-size but varying color blocks into sequences of 3 or more. Sequences can be formed horizontally, vertically, or diagonally, with higher scores awarded for longer sequences.
Gameplay involves creating 'combos' by arranging the blocks in such a way that one line causes other blocks to drop, revealing new lines and increasing the score. The game also features a 'flash' mode, where players must remove specific blocks from the base of a pre-formed pile, with increasing difficulty determined by the number of complete rows already in place.