It's okay to copy Mario Kart, certainly many games (Motortoon Grand Prix, Crash Team Racing) have done it well, but to work as a title and provide the consumer with a hook for entry, Heracles falls way short of the mark. Its hook is its aesthetic, which wears quite thin under the shallow and uninspired gameplay. Nothing more is offered in terms of substance or, beyond a few fun bits of four player battles, a reason to return.
Is Heracles Chariot Racing a good game for WiiWare? You bet. Is it a good game, period? Not exactly.