Klustar is a 1999Game Boy Color game developed byRebellion Developments and published byInfogrames. Similar toTetris, the game is apuzzle game requiring the player to manipulate and match patterns on a grid of blocks.

Klustar
Cover art
Developer(s)	Rebellion Developments
Producer(s)	Infogrames
Platform(s)	Game Boy Color
Release	April 1999[1]
Genre(s)	Puzzle
Mode(s)	Single-player,Multiplayer

The player controls aklustar of colored blocks that can be moved in four directions and rotated at right angles. InKlustar, coloredtetrominoes appear from all sides of the screen and attach to the center. The goal of the game is to match the colors by fitting blocks together by forming squares of at least three blocks with the same color, which disappear. The game continues until theklustar becomes so big it can no longer move, or blocks shapes entering the screen. The game contains two modes: an endurance game that lasts indefinitely, or a 'countdown game' where the aim is to get the highest score with a limited number of matches, with additional types of incoming shapes.^[2] The game is scored by the number and size of the paired squares, and the difficulty level set in the game.^[3]

Klustar was developed by Chris and Jason Kingsley ofRebellion Developments,^[3] and was one of the first titles developed by the pair and the first developed for theGame Boy. The game was designed and owned independently by the duo.^[4]Klustar was developed byRebellion Developments as the first title in four years following a series of unsuccessful developments for theAtari Jaguar. The duo stated "we had always been big fans of theGame Boy and worked on various iterations of the hardware over the years", and had "put together (their) own software tools for theGame Boy from off-the shelf tools".^[5]

Klustar received mixed reviews, with many critics assessing the merits of the game in comparison toTetris.^[10][11] Positive reviews ofKlustar considered the game as an innovative interpretation ofTetris.Q64 stated "Klustar is an interesting twist on theTetris theme, and puzzle fans of this type will want to giveKlustar a try".^[12] In a milder review, Craig Harris ofIGN stated thatKlustar was "one of the most unique" interpretations ofTetris, although "it doesn't have the same addictive quality as the original puzzle stacker".^[7]

Negative reviews focused upon the overly simplistic design and visual presentation ofKlustar. Dave Perrett ofPlanet Game Boy stated thatKlustar was "dull and unnecessary", as the "simple" idea behind the game "doesn't come close to challenging you", particularly once the player "(gets) the hand of how things work".^[10]Total Game Boy dismissed the game as a "second-rate version ofTetris", noting the "minimal" presentation and considering that "adding color was a pointless idea".^[11]Game Boy Xtreme stated thatKlustar "captures little of the excitement of the original".^[8]

• Klustar atMobyGames