LIMBO by Playdead

Limbo is a critically acclaimed indie adventure game, known for its captivating puzzle design and immersive sound and visuals. The game offers a haunting narrative and a dark, disturbing atmosphere, earning it over 100 awards including Gameinformer's Best Downloadable, Best Puzzle Game by Gamespot, and Kotaku's Best Indie Game. Players control a boy searching for his sister in a eerie, monochromatic world filled with challenges and dangers.