Numbers 0, 1, 2 emerges at the bottom row, and go up step by step, changing into other numbers. When a number reaches the top row, the number is added to the score. The player has to guess the changing pattern of numbers, and raise or lower them so that they finish as larger numbers.
When only the same numbers finish together, bonus points are given. Three 0s add to the score 7 points.
The left player operates with a keyboard, and the right with a mouse. Both scores are counted together. Make the same numbers finish together in cooperation with the partner!
If you finish mixed numbers together, then no point is given. Bad relation between the two would result in low score.
When the game comes to an end, the player's ID is shown on the screen. ID=63