Rollet is hilarious with four people (two teams of two), although singles games are fantastic with cannonball rules. Take up your positions with one team at each end.
With empty hands, clap “high five” style in a circle (ie. if there’s two of you, then “high ten”).
Roll steel balls down your chute(s), aiming to knock the wooden ball into your opponents’ goal.
When one side scores a goal, the wooden ball should be placed back on the starting dot. Team mates can re-distribute steel balls between them, but no steel balls should be passed from one team to the other. The next round begins with “high fives” as before.
The winners are the first to score 5 or more with at least a two point lead (just like tennis).