From the Super Mario Wiki
Suzaku Castle is a stage available as DLC in both Super Smash Bros. for Nintendo 3DS and Super Smash Bros. for Wii U. It serves as Ryu's home stage, and is only available to purchase bundled with Ryu for USD$5.99 (USD$6.99 if the player purchases a bundle for both the 3DS and Wii U versions). The stage is based off the Ryu stage from the original Street Fighter II, and is capable of holding up to eight players on both the normal and Omega forms.
Like with the original stage, Suzaku Castle is set on the rooftop of a Japanese castle. One side of this stage consists of two large platforms with a walkoff blast zone, while the other side consists of two smaller platforms, with a pit dividing each side. Only the bottom platform can be grabbed on either side of the stage. Also on the both sides of the bottom platform on the right side are signposts with Japanese writing on it, which can be broken when characters are launched by an attack near them.
The Omega version of the stage consists of just the bottom right platform. The signposts still appear on both sides of the stage, and can still be broken.
Suzaku Castle reappears in Super Smash Bros. Ultimate.
Super Smash Bros. for Nintendo 3DS
Super Smash Bros. for Wii U
Names in other languages