There have been a number of attempts to dethrone Nintendo’s Mario Kart over the years, but none of them have been successful, at least in the multiplayer sphere.
There is one aspect of Mario Kart that has pretty consistently sucked over the years, though, and that’s the single-player offering. Offering little more than predefined Grand Prix championships, one-off races or time trials even in the most recent installments, Mario Kart has always struggled to provide anything of real substance for the solo player. Which is fine, as the series has always been known for being best experienced with at least one friend, right from its inception in the 16-bit era.
This has, however, left a decent-sized gap in the market for other developers to come along and offer more robust solo experiences in kart racing titles. And one game that succeeds admirably in this regard is the cumbersomely titled Sonic & All-Stars Racing Transformed from Sega.