Plot
Rin Yamazaki and her college friends have their car break down in the mountains on a trip. Fortunately, a kindly old man offers to let them stay at his house. But there's a legend about the swamp outside the mansion...
Mermaid Swamp
This is a remake of the original game that adds new art, upgraded graphics, Japanese voice acting, reworked puzzles, and various quality of life and gameplay improvements.