Nintendo hat Update 2.1 für ARMS veröffentlicht und damit, wie üblich, Bugs beseitigt und Optimierungen durchgeführt. Außerdem bereitet man den Prügler für einen neuen Charakter vor. Hier sind die kompletten englischen Patchnotes:

General

• Moved “Training” to the top menu.
• Added five exercises to “Training”, and added difficulty level indications.
• Adjusted the way the rush gauge fills, decreasing the amount gained for punches that do not connect with the opponent.
• When 3-4 players start a battle, instructions on how to switch targets will now be displayed. A cursor will also be displayed above the current target for a set time.
• Adjusted hitbox sizes for fighters, improving issues where hits were not registered despite looking like hits.
• Changed the pause, results, and replay menus in “Training” to be more convenient.
• For “Best Stage” in Stats, made it harder for less frequently played stages to be selected, even if you have a high win ration on them.
• Corrected issue that caused the game to hang-up when the ending was skipped at a particular time.

Balance

-Master Mummy

• Increased dash speed.
• Increased movement speed when jumping.

-Mechanica

• Increased movement speed when jumping.

-Kid Cobra

• Adjusted floatation when performing a jump attack.

-Byte & Barq

• Trained Barq to get up quicker.

-Boomerang

• Increased speed when throwing in a wide curve.
• Increased extension speed.
• Increased homing.

-Coolerang

• Increased extension speed.
• Increased homing.

-Revolver

• Increased extension speed.
• Improved curving performance.
• Increased retraction speed.
• Shortened the time needed from starting a rush to firing the first shot.

-Retorcher

• Improved curving performance.
• Increased retraction speed.
• Increased expansion rate when extending.

-Parasol

• Increased expansion rate when extending.
• Increased retraction speed.
• Decreased expansion rate for charge attacks.

-Megawatt

• Improved curving performance.
• Increased retraction speed.

-Slamamander

• Increased homing

-Tribolt

• Increased extension speed.
• Decreased rush damage.

-Triblast

• Increased speed of charge attacks.

-Homie

• Increased rush damage.

-Guardian

• Made it so the electric shock when a charge attack connects lasts longer.
• Corrected odd behavior that occurred when a rush attack connected with a wall or platform.

-Blorb

• Corrected odd behavior that occurred when a rush attack connected with an opponent that was not targeted.

-Seekie

• Increased retraction speed.
• Made it so the electric shock when a charge attack connects doesn’t last as long.

-Ramram

• Increased retraction speed.
• Decreased expansion rate for charge attacks.
• Decreased speed of charge attacks.

-Cracker, Popper, Hydra

• Increased retraction speed.

-Bubb, Buff

• Decreased extension speed.
• Decreased expansion rate when extending.