I recently added some details to chapter scoring and skull values over on tiltforums. If you want to read the entire rulesheet here is the link.
There are five colored skulls shown at the top of the backglass display, as well various shots on the playfield: Port Royal (yellow skull), the Chest (green skull), the Maelstrom (red skull), the Fountain of Youth (blue skull), and the Devil’s Triangle (purple skull).
Shooting any of these shots once qualifies a chapter at the Star Map shot. If the Star Map is made with multiple chapters qualified, the ball will bounce around and collect the Skull value for each target hit. The last target hit before time runs out will be the chapter you play.
Skull values and Chapter Scoring:
Skull values begin at 1000pts and can be built to a max of 10,000pts. They are built by the following:
Purple Skull: Left spinner adds 10pts per spin and 5pts for a partial spin. A good spinner rip can add several hundred points to the Purple Skull value.
Red Skull: Each shot to the left ramp(Maelstrom) shot adds 100pts to red skull value.
Green Skull: Each shot to the Chest adds 50pts to the green skull value.
Yellow Skull: Each shot to the left orbit(Port Royal) adds 75pts to the yellow skull value
Blue Skull: Each shot to the Inner loop(Fountain of Youth) adds 25pts to the blue skull value.
Character shot values are multiplied by adding .5X for each additional Skull lit when shooting the Star Map.
Examples: One skull lit = characters are collected at 1X.
Four skulls lit = characters are collected at 2.5X
All five skulls lit = characters are collected at 3X.
Once a chapter is played, all skulls are unlit and must be re-lit to start another chapter at the Star Map.
When a ball ends, all skull values reset to 1000pts unless a Skull Hold has been awarded.
Shooting The Depths will apply a Skull Hold to the highest current skull value.
Skull Holds can also be given through mystery awards.
Playing as Angelica also awards 1 skull hold at the end of every ball.
The rules for starting Chapters vary depending on your character. If you’re playing as Elizabeth Swann, a Chapter is always lit, and Tia Dalma allows you to select the Chapter you want with the flippers and action button.
In each Chapter, the goal is to complete all flashing shots, from a minimum of 1 to a maximum of 12. Completing a Chapter awards a Completion Bonus of 2500 and increases by 250 each time, a Timer Bonus worth 25 x the number of characters x the number of seconds left. The shots themselves are worth the Skull value corresponding to the appropriate color. The more characters collected, the higher the level of scoring in a movie’s Wizard Mode will be. Completing Chapters also contributes to this tally.
In order to qualify each movie’s mini-wizard mode, 5 chapters from the movie must be played.