Based on the myth of Cthulhu it would be even better
Viewing post in [GameDesign] Seeking someone with game-ideas
I know, opticians travel through the northern United States about an ancient myth 'Cthulhu' and then they notice a red sea and then, due to the curiosity of one of the members, he goes to see what this sea is like.Interesting, but when he realizes that something is lurking there, he is taken by a huge thing that makes him mysteriously disappear.