Bowser's Fearsome Finale is the final stage in Super Mario Adventure, and is the boss stage of World 8. The game combines many elements from every part of the game, which it does in a very unusual way. There are technically 8 different versions of this stage, each matching with one of the eight worlds in the game. The walls between eight different realities have been ruptured by Bowser, causing one reality to affect another. In order to proceed through the stage, Mario must utilize windows to jump from one reality to another, and can use the scenery changes or power-up in one version of the stages to find a way of proceeding in another. This mechanic was used to a lesser degree in the World 9 stage The Hall of Seasons.