EPISODIUM
Brain Wall is a component of the Japanese game show Tonneruzu no Minasan no Okage deshita Video clips from the show proliferated on video-sharing websites and the concept was eventually adopted by several countries. It became popularly known to non-Japanese speakers as simply Human Tetris, or Hole in the Wall, named for its involvement of the physical body and a supposed close resemblance to the rules of the video game Tetris.