What is the Japanese title of Nintendo's 1993 game Tetris 2?

The Japanese title of Nintendo’s 1993 game Tetris 2 is Tetris Flash.

Tose developed Tetris 2, while Nintendo published it for the NES, Game Boy, and Super NES. The NES release arrived in Japan on September 21, 1993; the Game Boy and Super NES versions followed later. In Japan, the game was titled Tetris Flash rather than Tetris 2.

Its gameplay changes the classic formula. Instead of simply completing full horizontal lines, players match the colors of falling blocks with blocks already on the board. Groups of three matching blocks disappear, giving the game a flavor closer to Dr. Mario while retaining descending tetrominoes.

The title can be confusing because “Tetris 2” also refers to other unrelated games, including an earlier ZX Spectrum release and Tetris 2 + BomBliss. In this question, the 1993 Nintendo game is the intended subject, and Tetris Flash is its Japanese name.