| Game & Watch Flat Zone X | |
|---|---|
 
| |
| Universe | Game & Watch |
| Appears in | Super Smash Bros. Wii U |
| Availability | Unlockable |
Flat Zone X is an unlockable stage in Super Smash Bros. for Wii U. It is a combination between the two Flat Zones from previous titles, bringing back one more stage transformation: the layout of Helmet from Flat Zone in Melee. The Helmet layout is essentially unchanged from its appearance in Flat Zone in Melee; the other layouts are retained unchanged from Flat Zone 2.