Sonic's a troubled old mascot. With every new game he fronts, the realisation that he's not what he once was becomes ever more apparent. What must be even more infuriating though, is that the remedy to his problem is so obvious and easily achievable, yet to bring him back to his classic 2D roots, Sega never quite go the whole hog. Sonic Unleashed, the latest title starring the Blue Streak on Xbox 360, does make a few somewhat successful attempts at capturing his former glory. Rather than take a leaf from his old Genesis book however, Sonic Team lift direct chunks of gameplay from their other close-but-no-cigar effort, Sonic Rush, on the Nintendo DS.