A successful arcade game released by Taito in 1977. It is essentially a Breakout clone/variation.

The game was originally released in a tabletop format, known as T.T Block in black-and-white with a color overlay, similiar to the original Breakout. A color version and a pure black-and-white version of the tabletop both followed in 1978, as well as a stand-up cabinet. The game would also recieve sequels in 1978's Super Block and 1979's ZunZun Block.