This game is rated ESRB: Everyone 10+ for Mild Violence.
Lost in Blue is a 2005 survival adventure game developed by Konami for the Nintendo DS. The game follows two teenagers — a boy and a girl — who find themselves stranded on an apparently deserted island and must work toward an eventual escape. Gameplay centers on mastering fundamental survival skills, including hunting, foraging for food, and crafting basic tools. A notable structural feature is the ability to play through the experience twice: first from the boy's perspective and then from the girl's, with each offering a meaningfully distinct experience. Progress depends heavily on dividing responsibilities between the two characters, making cooperation a core mechanic rather than an optional element. The dual-protagonist design and emphasis on shared survival tasks distinguish it within the handheld adventure genre.
The story begins with the protagonists riding on ship when a massive storm causes the vessel to sink. In the commotion, Skye manages to get on a liferaft while Keith plunges into the water, at which point he loses consciousness. Keith wakes up on the beach of the south side of a deserted island. After exploring his surroundings, he finds shelter in a cave. The next day, Keith crosses a nearby river and finds Skye asleep next to her raft, which is apparently undamaged. After she wakes up, Keith and Skye meet for the first time and she tells him that she can't see very well because she has lost her glasses. Keith offers to help her look for her glasses, but accidentally steps on them during the search. With Skye's vision severely impaired, she becomes dependent on Keith to guide her safely around the island. The two return to the cave and make a home.
