Arcs

A show has 3 arcs. The machine starts with 4 columns; arc 1 widens it to 5 and arc 2 to 6. Every arc opens a prize pick; then the boss.

In a full show the arcs start at rows 135, 310 and 490 and the boss arrives at row 670. The board starts with 4 columns; arc 1 adds the 5th, arc 2 the 6th, arc 3 adds none. Every arc start opens a prize pick. Escapes cost more in later arcs. In the short show the arcs come at rows 65, 145 and 230 and the boss at 315.