40 Winks (ナイトメア・ナイトメア・ガーディアンズ, Naitomea Naitomea Gaadiinzu) is a Nintendo 64 game developed by Eurocom and published by GT Interactive Software in 2000-01-10. It is a platformer game that follows the adventures of two siblings, Ruff and Tumble, as they try to save the world from the evil Nitekap. The game features a variety of levels and enemies, with the goal of each level being to find the forty winks scattered throughout the environment. The player can switch between Ruff and Tumble at any time and use their unique abilities to progress through the levels. The game also features a variety of mini-games, such as a racing game and a puzzle game, which can be played at any time. 40 Winks is a fun and challenging game that is sure to provide hours of entertainment for fans of platformers.