Though the first game does appear to offer more race options it is at the expense of providing a more structured single player championship. (thelatenightsession.com)
As for in - game, the player created race options are slightly boring and repetitive, where extra races and content from the developers would have been more ideal. (wccftech.com)
A game such as this would probably benefit from having a competitive racing option, or a co-op mode. (theplatformer.net)