A game of bowling has 10 frames. In each frame you get up to 2 rolls to knock down all 10 pins. Your score for each frame is the total number of pins knocked down — plus bonuses for strikes and spares.

Knock down all 10 pins across 2 rolls in a frame. Your bonus is the number of pins you knock down on your next roll.

Knock down all 10 pins on the first roll. The frame ends immediately. Your bonus is the total pins from your next 2 rolls.

The 10th frame is special. If you roll a strike or spare, you get bonus rolls — up to 3 rolls total in the frame. No further bonus calculation applies; you simply add up all pins knocked down in those rolls.

12 strikes in a row — a strike in every frame including all 3 rolls in the 10th. Maximum possible score: 300.