The Home-Run Stadium is a Special Stage used in the Home-Run Contest. It is a huge grassy stadium with a single small platform where Sandbag and the player start. A Home-Run Bat is just to the left of both of these. In all of its appearances in the series, the Stadium has historically lacked blast lines.
The Home-Run Stadium made its debut in Melee, acting as a limitless stage where players could attempt to send Sandbag flying as far as possible. A wall to the left of the platform is present, and Sandbag can be bounced off of it. While the stage does eventually end, reaching such a distance is almost impossible outside of hacking.
The stage can be accessed through the debug menu, where it is internally known as HOMERUN. If Player 2 is not set to be Sandbag, the stage will stop loading floor and background textures after the 800 feet mark. The stage has blast zones at the top and the bottom.
The Home-Run Stadium returned for Brawl, though the stage now has an energy barrier surrounding the platform that deactivates approximately 0.5 seconds before the timer runs out, meaning that the Sandbag cannot easily move off the platform. However, this shield can be broken if excessively used, or if the Sandbag hits it with enough force.
The Home-Run Stadium features a time change mechanic; as Sandbag is sent further in the stage, time passes on the stage, with the stage going from midday to night, and back again depending on how far Sandbag was sent.
Via hacking, this stage can be used on Versus Mode, though unlike in Melee, it lacks any blast lines.
The Home-Run Stadium returns in Super Smash Bros. 4, acting nearly identical to its appearance in Brawl. The barrier is now much stronger and can only be broken if it is hit with enough force, as opposed to simply being hit enough times.
The Home-Run Stadium returns in Super Smash Bros. Ultimate, now with a complete visual overhaul. Unlike the previous installments, the Stadium is now more themed around Battlefield's main design, straying away from the Stadium aesthetic and going for a more medieval setting. The platform is now surrounded by water instead of a grassy field. If the Sandbag is hit far enough to the left (after using a glitch),the Sandbag will fall into an endless void. There are items spread throughout the stage which will be collected once touched by the sandbag. When the sandbag is hit, said sandbag is sent flying into space before finally hitting the ground, which now resembles a large stone bridge in front of a waterfall background.