🎀 Ms. Pac-Man Reverse Engineering

We’re cataloguing the behavioral and timing constants used in the original arcade ROM. This document is a work in progress. The information is likely to be completely wrong at this point, since it hasn't been carefully curated. If you are looking for accurate information, I recommend looking elsewhere. At this point, this document is merely presenting plausible information.

Modes

• Scatter / Chase / Frightened durations per level
• Ghost AI personalities
  • Chase a.k.a. "Blinky" – red (aggressive / direct: intercept player)
  • Offset a.k.a. "Pinky" – pink (clever: intercept player)
  • Vector a.k.a. "Inky" – cyan (fickle: Blinky + Pac vector math)
  • Lil Coward a.k.a. "Sue" – orange (cowardly: always turns away from the player)

Psycho Chase

When dotsRemaining <= psychoChaseDotsLeft, Blinky's speed increases by 20–40 %, overriding the base velocity curves.

Fruit Behavior