Goal door (Wario Land series)

A goal door is a door that Wario enters to exit the current level in the Wario Land series. The goal doors' appearance changes greatly throughout each installment, and the method to access a goal door is also different for each one.

Wario Land: Super Mario Land 3
The goal doors in Wario Land: Super Mario Land 3 serve as regular level exits. Wario has to enter them in order to clear the levels. A goal door looks like a regular door, but it is covered by a large skull-like emblem with an embedded coin slot. Wario first has to throw a 10 Gold Coin into the coin slot, making the skull emblem move away. The player can then make Wario enter the goal door to complete the level. Goal doors can be found in every level except for boss stages, where they are replaced by doors leading to the boss. Sometimes there is more than one goal door in a level. Entering such a door results in Wario finding a hidden stage, or sometimes a whole new world.

Wario Land II
Goal doors reappear in Wario Land II. Wario once again has to find these doors to complete the respective levels. Goal doors look different from before. They have a row of four flashing stars above them and play a happy, recognizable tune. Goal doors appear in the majority of the stages but not in all, since some levels require other conditions to be met (such as defeating the giant spear man). Sometimes a level has a secret goal door that unlocks a new set of levels when entered.

Wario Land 3
Goal doors appear in Wario Land 3 as well, though they are not as important as they were in the previous two installments. In this game, Wario has to find one of four treasures hidden in the stage to complete the level. The treasures are locked away in differently colored treasure chests. The only way to open them is to find the key that matches the chests' color. After Wario has found the treasure, he can revisit the level to look for the remaining treasures. The treasure chests that have been opened already get replaced with doors that work in a similar way as goal doors, as they transport Wario out of the level. These doors are surrounded by pink bricks and glow slightly.