"Outside of inserting hideous North American art in place of Japanese originals, various billboards bear the taint of advertising, showcasing very mediocre titles Sega re-released on the Virtual Console and elsewhere. Some things shown in '90's Avenue' aren't even from the era, but these two unlockable tracks are still the best things in the entire game. In fact, any longtime SEGA fan should know that their initially uplifting existence only saddens in the end.
While cruising through those stages and looking out for every game you fondly remember, it eventually dawns on you that you're only having fun because those games were great, and this one is not. Sonic Riders: Zero Gravity is yet another black mark on Sega's formerly meaningful name, and easily one of the most disappointing Sonic games ever made."