This teeny-tiny article needs some work. You can help us by expanding it.
6-Pak is a compilation of Sega Mega Drive games released in June 1995, during the console's decline. The cartridge contains six of Sega's most successful games from the early days of the system. The in-game menu features digitized box art of the original games. It came with a 67-page manual that contained the complete instructions for all six games. The artwork used on the box for Columns is taken from the 8-bit versions of the game rather than the Mega Drive edition.
There is a similar compilation in Europe called Mega Games 6 but it is broken up into three volumes. Each containing some games which are unique to each collection.