Stage 8-1 is the first level of Rocky-Valley in the Game Boy version of Donkey Kong. This level revolves around exploiting the water physics and the ladder and block objects to bring the key to the door.
Mario starts on a platform right next to the door. Right under him is a lake with two Bukubukus, who are guarding a key in the bottom-left part of the lake. The player must fall in to the lake and either use the key to defend against the Bukubukus or simply dodge the enemies. Once the Bukubukus are gone, the player must hold the key and Jump across the platform in the lake to the top of the lake where the player must throw the key onto land and then swim up there and pick the key back up. Then, the player must use a ladder object to spawn a ladder leading to a platform which leads to the top of the stage, but before the player climbs up they must throw the key onto a nearby platform. The player must then climb up the ladders while dodging the nearby Arumajirons to grab the key in time and finally enter the door.
Pauline's lost items
Within this stage, Pauline's lost items can be found in the following order and in the following places: