The rules are simple. You get points for making somebody buy something that they wouldn't otherwise have bought. The person who makes the suggestion first scores the point. You can't score points for making yourself spend money. I'm happy to take suggestions for more scoring categories.
1 point
Get Wes to buy something that he has to paint
Get Matt to buy a miniature to add to his lead pile
Get Pete to buy something for a new game
Get Kieron to buy something for a system he believes he has 'finished' (FoW, Bolt Action, etc.)
5 points
Convince anybody to spend more than £20 on a single item
10 points
Convince anybody to spend more than £50 on a single item
Game on!
1 point
Get Wes to buy something that he has to paint
Get Matt to buy a miniature to add to his lead pile
Get Pete to buy something for a new game
Get Kieron to buy something for a system he believes he has 'finished' (FoW, Bolt Action, etc.)
5 points
Convince anybody to spend more than £20 on a single item
10 points
Convince anybody to spend more than £50 on a single item
Game on!