Sonic Battle is a fighting game developed by Sonic Team and published by Sega for the Nintendo Game Boy Advance in 2003. It marked a departure from the traditional side-scrolling platforming gameplay of the Sonic the Hedgehog series, instead opting for a 3D arena-based fighting system.  Players could choose from a roster of iconic Sonic characters, each with unique moves and fighting styles.  The game featured a variety of game modes, including a story mode, arcade mode, versus mode, and a training mode, providing hours of gameplay for fans of the franchise and fighting game enthusiasts alike. The game also featured innovative features like the use of a customizable battle system where you could add extra moves to your character.  Sonic Battle received mixed reviews, praised for its unique gameplay and roster but criticized for its somewhat simplistic graphics and occasional control issues. The game's unique take on the Sonic universe however solidified its place as a cult classic. 

Sonic Battle - The Ultimate Hyper Knuckles.

Sonic Battle - Super Sonic 3