How Big Tuna Casserole works
Two lowest-ball sequences: 1–10 and 11–15. Call your ball and pocket. First contact must be the lowest remaining ball in either sequence. The 10 wins once the 9 and 11–15 are gone—even if lower solids remain.
Money balls & fouls
First contact must be the lowest remaining ball in either sequence. Illegal pocketed balls are spotted. A foul gives ball in hand. The 15 earns $1, the 9 earns $2, and the winning 10 earns $3. Money totals are game points, carried across racks until New match. The winner breaks next.