Numbered Grid Puzzle Game With Japanese Name
Puzzle 15 of Millennial Words Hard Pack
Question is: Numbered Grid Puzzle Game With Japanese Name
and the answer is: SUDOKU
Word Meaning:
SUDOKU — (games) A type of pencil puzzle played on a square grid, requiring each of the columns, each of the rows, and each of the subregions (called "boxes" or "regions") to contain the lowest whole numbers up to the dimension of the puzzle, usually 1 to 9, once each. The subregions are rectangular or square except in variants.
Definitions from Wiktionary.