G5 Entertainment and Artifex Mundi have brought the "Nightmares from the Deep: The Siren's Call" to the Mac. It's available at the Mac App Store.

Here's how the game is described: "When Sarah Black, curator at the Caribbean Naval Museum, receives a mysterious package, she is unwittingly drawn into an ancient conflict. As she begins to remove an artifact from the package, assailants instantly descend on the museum and snatch it. In disbelief, Sarah realizes that yet again she is falling headfirst into a nightmare from the deep! Soon she finds herself on the shores of Kingsmouth, a forgotten fishing village with an incredible secret.

"A would-be messenger reveals the sad truth: he and the town's other denizens are gradually turning into ghoulish, mutated ocean creatures. And this curse was cast by none other than Mayor Murray and the old sea-devil himself, Davy Jones! Answer the siren's call to save this beleaguered village and defeat Davy Jones, Mayor Murray and his pet sea monster, the Kraken!"
 
Gamers can try the game for free and unlock the full version via in-app purchase for $4.99 through April 11. The regular price is US$6.99.