You can make your own rules for this game, but here are some my class decided on in case you are stuck:
Before starting the game, the counter is placed on zero and a target number is decided on (usually between 20 – 30).
Each player takes turns to move the counter along a line to a number. Every time the counter is moved, the new number is added to the previous total. For example 0 to 5 = the total is currently 5.
You MUST move the counter along a line from one number to another.
The players MUST add the score up mentally (in their heads) as the counter is moved.
Whichever player reaches the target number first, wins! You could change this rule, so that the player that reaches the number first loses!
Finding keeping track of the adding tricky? Make your target number lower.
Finding it too easy? You can make the game trickier by setting the target number higher. What is it like to play with three players?
You can download and print the game from here: https://nrich.maths.org/1216