When performing the Boost, the user surrounds themselves in a projectile-shaped energy shield and propels themselves forward at speeds beyond the sound barrier, thus turning the user into a highly destructive projectile moving at supersonic speeds. In Sonic Unleashed that technique was finally fleshed out for the consoles, drawing much of its content and dynamic from its Sonic Rush series counterparts.
Sonic the Hedgehog (2006) would later develop an exact picture of the mechanism, a technique which subsequently appeared in Sonic and the Secret Rings. It was later in Sonic Rush and Sonic Rush Adventure that the technique was redeveloped for universal usage and dubbed the 'Super Boost'. The concept of the 'Sonic Boost' was first introduced in Sonic Heroes, where any character could repeatedly use a short momentary 'Dash' of speed in the Special Stages.
