It's yer first day on the job as a new lighthouse keeper at Phantom Point, and just yer luck... the ocean is haunted silly by ghost ships. Should've read the job description closer.
Switch between lighthouse windows to blast colored beams at the color-coded ghost ships and keep the mainland safe. Maybe even earn a few doubloons for yer trouble to upgrade the lighthouse, or add fortifications like turrets, shields and more — lord knows yer hourly rate (free) as a lighthouse keeper ain't cuttin it.
Thanks for playing this silly game, and who knows, if enough people like it, maybe I'll just go ahead and haunt your screen with more levels and features. Stay dry out there friends.