Gaur Plain (ガウル平原, Gaur Plain) is a stage in both versions of Super Smash Bros. 4 based on an area from Xenoblade Chronicles.
There are two main rock platforms high up on each side of the stage with walk-off edges, with a giant chasm in between. A collection of smaller and mostly soft platforms appear below the main platforms, with the exact layout changing between the two versions of the game; the Wii U version of the stage also features, near the bottom, some more hard platforms with springs on them: characters can use the springs to bounce up to the top platforms.
In the 3DS version, the top blast line is very close to the stage, while in the Wii U it is much farther.
The background shifts through a day/night cycle. In Super Smash Bros. for Wii U only, Metal Face appears at night, attacking the players with his claws and laser beams. His laser beam attack can target any of the two upper platforms, making them fall and destroying the platforms underneath. The original layout is automatically restored some time after he is defeated. If attacked enough, Metal Face can be defeated, causing him to explode; the explosion harms all characters in its range except for the one who landed the finishing hit. However, he may return when night falls again.
The Ω version features a pillar at the bottom, which is solid in the Super Smash Bros. for Wii U version but just part of the background in the Super Smash Bros. for Nintendo 3DS version. The day/night cycle still happens.
While the Omega version of this stage is allowed, the standard stage is banned from tournaments due to it being very open, allowing for camping. Metal Face disrupts and even destroys the stage occasionally in the Wii U version. The stage also has walk-offs.
In Xenoblade Chronicles, Gaur Plain is a location within the greater Bionis' Leg area. It is a lush, large plain featuring bodies of water and several peculiarly shaped rock formations. Shulk and his friend Reyn traverse it in their path to the Bionis' Head. In Xenoblade Chronicles, the plain is much closer to the Bionis' knee than in SSB4.
The gigantic figure seen in the distance is the Mechonis, the other of the two gigantic beings which make up the world in Xenoblade Chronicles. It is visible from Gaur Plain in the original game, but, due to the aforementioned position change, in this stage it appears to be farther away.
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