A strange little side quest
The next time Doraemon Mystery asks for one more try, remember that game ideas rarely appear from nowhere. The name Tetris combines a reference to four-square pieces with Pajitnov's interest in tennis. And then there is this: Nintendo's Donkey Kong arrived in 1981 and introduced the character first known as Jumpman, who later became Mario. So a round of Doraemon Mystery is not just a quick distraction; it is a tiny stop on a much longer puzzles timeline.