A strange little side quest
A quick detour while Bubble Tower waits for your next move: The first crossword puzzle book appeared in 1924 in a cautious initial printing of 3,600 copies, complete with a free pencil. That is only half the story. Nintendo's Donkey Kong arrived in 1981 and introduced the character first known as Jumpman, who later became Mario. That gives Bubble Tower a little more company than it first appears to have.