Drownlight

A chain of devastating explosions triggered massive tsunamis that drowned continents and erased civilization from the face of the Earth. A small group of survivors, having endured a long drift across the endless waters, discover a lonely lighthouse in the middle of the ocean. No one knows how many people are left alive, but for these survivors, this place becomes a chance to begin again. Here, around this isolated lighthouse, they start building a new city — the last bastion of humanity.