The is a fan-driven expansion of the original Game Boy Advance fighter, largely built using the MUGEN engine . These "mods" typically refer to the massive character packs, stage additions, and visual overhauls that transform the standard combat experience into a high-definition crossover spectacle. The Evolution of Sonic Battle HD Deluxe

Several types of mods are available for Sonic Battle HD Deluxe Edition, including:

Sonic and Shadow in all their variations, including Dark , Werehog , Super , and even Hyper forms.