A player can win a round by either being the first to complete a set number of faces or by forcing their opponent's cubes to stack up to the top of the pit.

The first player to win a set number of rounds may continue the game alone in single-player mode.

Apart from the other known console ports of Blockout, there were also two for NES: the first is an official unreleased prototype developed in 1990 by Technos Japan Corp. under the name "Block Out", while the second is an unauthorized clone programmed by Hwang Shinwei and published by both himself and RCM Group in 1989/1990 (titled 3D Block).

"[6] A 1993 study found evidence that playing Blockout improved the spatial visualization ability of 10- to 14-year-olds.

[11] In Japan, Game Machine listed Block Out on their March 1, 1990 issue as being the tenth most-successful table arcade unit of the month.

[13] Robert A. Jung reviewed the Atari Lynx version of the game, which was published on IGN.

[19] The game is open-source and was ported to many platforms the original wasn't available before, like Microsoft Windows,[16] Ubuntu,[20] and the OpenPandora handheld.