How to play the KAKURO game?

Question

How to play the KAKURO game?

Answer 1

are you referring to the number puzzle game?

although it's not necessarily a board game...

here's the HOW TO PLAY instructions taken directly from the game itself.

Fill in the blank squares, using 1 to 9, without repeating any number in any run line.  The lines must be filled in with numbers that add up to the total in the shaded box at the top or beginning of each line.  A number in the bottom half of the shaded box is the downward total; in the top half, it's the horizontal total.

i don't know how else to explain it other than what it tells you...

you could think about it like Sudoku but with adding and without the 3x3 boxes.