Firstly here's the Excel file: The Up & Down Game
Right-click, "Save Target As", and select where you want the file
to be saved.
The increment buttons (spinners) change the total up or down by 2,
7, 3, or 5. You can find out about spinners
The aim of the game is to make the total a multiple of 10.
Each player has the use of two buttons. On their turn they select
one of the two buttons, and move the total up or down.
The first player to hit a multiple of 10 five times wins.
The button numbers can be changed : just click on the number you
want to change, type a replacement value and press Enter.
Make up your own rules. For example each player could choose one of
their own numbers and one number for their opponent.
The Up & Down Game uses conditional formatting with a formula.
This is discussed in the technique notes