Block Hole

Block Hole, released in Japan as Quarth, is a 1989 puzzle video game developed and published by Konami for arcades. It was released in Japan on October 9, 1989 and internationally the same year. It was ported to the MSX2, Famicom and Game Boy as Quarth, with the exception of the European Game Boy Color release of Konami GB Collection Vol.2, where the game was renamed to the generic title Block Game for unknown reasons.

A sequel, Block Quarth, released on the Konami Net i-mode service, with an updated Block Quarth DX in 2001. It was released internationally without the "DX" suffix in 2005.