Columns is a puzzle game that challenges players to arrange falling blocks in a specific way to clear them. In Columns, the blocks are groups of 3 same-size but varying color blocks, which must be arranged into sequences of 3 or more, either horizontally, vertically or diagonally.
The game requires strategy and planning, as players need to set up 'combos' - where one line causes other blocks to drop so as to create other lines. The game also features a 'flash' mode, in which the aim is simply to remove a particular block from the base of the pre-formed pile of bricks. The difficulty of this mode can be determined by increasing the number of complete rows which are already in place.
Columns was released for the MSX in 1970 and has since become a classic among retro gaming enthusiasts.