Beta elements

Beta elements are gameplay and aesthetic elements of a particular game that were shown in official material or referenced internally but not included in the final game. The following is a list of beta elements in ARMS.

UI

 * The Rush Meter originally featured a button prompt once filled.
 * Most character portraits were somewhat different in ARMS ' s January demo.
 * In ARMS ' s January demo, the win counters consisted of blue dots in place of the game's final white dots.
 * The VS symbol when a match begins was originally black with a yellow outline.
 * A number of UI elements indicating player number, using red and blue colors, were present in the January demo.
 * The "Ready? ARMS!" and "K.O." voice clips seem to originally have had a different voice actor.
 * An early victory screen had a different position of the WINNER! text and rendered the stage in black and white.

ARMS

 * The Tribolt was originally called the Trident.
 * The Megaton was originally called the Big Punch.
 * The Popper initially had a primarily orange color scheme and featured a different brand.
 * The Slapamander had a black color scheme with orange accents at some point in development, closer to the final design of the Slamamander.
 * Some characters had different standard ARMS in the game's January demo, some notably overlapping with other characters:
 * Ninjara used the Sparky and Tribolt as his second and third standard ARMS.
 * Master Mummy used the Homie and Revolver as his second and third standard ARMS.
 * Mechanica used the Toaster and Boomerang as her second and third standard ARMS.
 * An ARM internally named "gumshield" exists in a working state within the game's files. It looks similar to the Clapback, though with a yellow rim and dark navy blue center. It also has an unused Brand featuring a lion. If another fighter punches this shield while it's extended, their ARM will stick to it and will be released if the gumshield user punches again or they knock the opponent down.

Fighters

 * Master Mummy's and Mechanica's grabs originally dealt 150 damage, the same as all other characters in the January demo.