Heileen, developed by Tycoon Games, is a Mac compatible
historical-fiction visual novel game with multiple endings. It sports
over 4,500 screens of dialog, eight chapters and three different
endings.

Here’s how the game is described: “The game tells the tale of a young
girl from the 17th Century, Heileen. Her merchant uncle leaving her
no choice, she undertakes a voyage to the New World. She’ll meet old
friends, like her childhood friend Marie, and get the chance to
befriend other people, like John, the young, dashing sailor, Marco,
the ship’s cook, and Lora, the shameless mistress accompanying her
uncle on the voyage.

A free demo is available from the Tycoon Games web site
(http://www.tycoongames.eu). The demo is three chapters long and
introduces some of the characters and the story. Registration is
US$19.95.