Coliseum

Coliseum (, Arena) is a stage in and Super Smash Bros. Ultimate from the  series. The stage uses underground machinery to provide a variety of different platform layouts. In Super Smash Bros. for Wii U, is fought for her unlocking battle and in Ultimate,  and  are fought here for their unlocking battles.

Stage overview
Coliseum takes place in a desert coliseum. As the battle progresses, various platforms will quickly rise and change the layout of the stage, similarly to Arena Ferox. The starting layout is long, flat and simple. Additionally, the stage in general has walk-off blast lines and no bottom blast line. With hazards off, no platforms appear from the ground, and the level remains a flat plane for the duration of the match.

Ω forms and Battlefield form
In Super Smash Bros. for Wii U, the Ω form features a high rise platform on an arena that extends below the blast line. The design of walls surrounding the bottomless pit can be seen. Walk-offs are removed, and the layout does not change.

In Super Smash Bros. Ultimate, the Ω form and Battlefield form are similar to SSB4's Ω form; however, the main platform does not extend below the blast line and is resized and reshaped to match and, respectively. The three soft platforms of the Battlefield form are made of stone and are unique to this form.

Origin
s, also referred to as coliseums, are a recurring gameplay element that have appeared in most of the Fire Emblem games. They can optionally be visited by any unit for a small fee, allowing said unit to engage in a one-on-one battle with an unaffiliated unit, receiving double the entry fee in case of a victory. In addition, victory against these units still counts towards a character's EXP totals; however, any units that fall in the arena are lost forever, as if in a normal battle. As such, the player can potentially allow their units to flee the arena, at the cost of losing money from entering.

The design of the stage does not draw inspiration from any particular Fire Emblem game; however, the dragon statues bear resemblance to the and  from the Nintendo DS remakes of the Archanea games. Sakurai has also made a reference to the original game in a Miiverse comment.

Tournament Legality
Coliseum is banned from tournaments due to the platforms rising and lowering forcing players to constantly have to adapt, and the fact that the stage has walk-off blast lines, allowing for camping and early KOs.

Update history
 3.1.0
 * Coliseum's on-screen appearances and revival platforms locations have been changed.

Trivia

 * In Ultimate, if the camera is set to fixed and Palkia flips the stage, it is possible to see beyond the intended lower boundary of the stage, revealing the negative space below the ground. As this space is never normally seen, it does not erase previous frames before rendering the next, creating a series of afterimages in a . A similar effect occurs on Training.
 * In Ultimate, the following Assist Trophies cannot appear on this stage: Metroid, Color TV-Game 15, Devil, Dr. Kawashima and the Ghosts. Additionally, due to being a walk-off stage, Abra cannot be summoned from a Poké Ball.

Coliseo