Merits and demerits in full review so read on....
Demerits: The host talks too much and is very annoying, if you play with computers then they will lead you to the star, lackluster graphics, lots of luck games.
The basic point is that Mario Party 8 is not a success, it would be ok for a Gamecube game but not for the Wii. You really don't do anything, all you do is just smack the dice and watch your character run arount the board. Minigames have basic controls and in most Minigames you hold the Wii Remote sideways which is discrimination for left handers that they have to take off their wrist strap and play. The game does not support left hand and right hand feature like Wii Sports does. The game lets you play a series of games with your Miis and in games like Table Tennis/Ping Pong, for left handers if they hit backhand it will be forehand and then vice versa. This is a stupid mistake made my Nintendo and is very annoying.
Although Mario Party 8 has its downs, it is still what it used to be, an enjoyable multiplayer game.