This unusual adventure game casts players as a young castaway, who finds himself stranded on an unknown island. The teen eventually meets another survivor, a young woman, and the two quickly realize they must work together if they hope to stay alive and return home. The gameplay of Lost in Blue involves strategic resource management, action-oriented mini-games, and a point-and-click-styled interface designed for intuitive use on the DS touch screen. The storyline ends differently depending on the interpersonal relationships and puzzle-solving accomplishments of both characters.