The Shores is a significant improvement over the previous DLC, The Backstage, offering a much more interesting gimmick (underwater diving) for the level. That said, I would still argue The Shores doesn't hit the heights of the first two games, particularly in terms of level design.
DLC #13: Little Nightmares III: The Shores Base Game: Little Nightmares III Developer/Publisher: Supermassive Games/Bandai Namco Entertainment Release Year: 2026 Played On: Nintendo Switch 2