If you came looking for Mario Kart then you came to the wrong place. I can see this being fun for some people but not for me. I don't like racing games with the exception of Mario Kart games.
This game is all Arcade, it's not a sim like DIRT but that's not to say people who enjoyed those game wouldn't like this one. Graphically this game delivers with many vibrant colors but it also has a lot of motion blur which is something that kills a game for me. When I play a fast paced racing game i want to see things 150 feet in front of me but the blur prevents me from really focusing on anything 30 feet in front of my character. The game also feels like it is barley getting passed 30 fps, which makes the blur even more unbearable. If you came only hoping for Mario Kart then you won't get what you expected, It does have items and such but it doesn't catch the feel that the Mario Kart games have. If you want something slightly different with loads of content than this game could be for you.
The graphics are great if not awesome however game control is simply unrealistic. If you are an avid gamer who grew up on the joystick then maybe you wii do ok. Unfortunately some of us prefer just normal driving mechanics and this game fails to deliver. You are forced to use the WiiU Gamepad if playing solitary, not a bright idea SEGA.