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Sega Game Pack 4 in 1 is a compilation for the Sega Game Gear. It was only released in Europe.
Included are four untitled games - a Columns clone, in which the player aims for groups of four pieces rather than lines of three, a simple penalty shoot-out game, a basic rally game and a simple tennis game (where the umpire is Sonic the Hedgehog). The tennis and puzzle games were recycled from Kuni Chan no Game Tengoku.