This is a tool-assisted speedrun. For more information, see http://tasvideos.org/3462M.html. TAS originally published on 2017-07-08.
Sonic Blast, known as G Sonic (Ｇソニック) in Japan, is a platforming game for the Sega Game Gear released in November 1996. A similarly titled game, Sonic 3D Blast, was released in the same month for Sega's Genesis and Saturn consoles, though the games had different gameplay, plot, and a separate development team, as this game was developed by Aspect, whereas Sonic 3D Blast was a joint venture between Traveller's Tales and Sonic Team.
Challenger completes the game in record time.