List of Mario Party 8 pre-release and unused content
From the Super Mario Wiki
This is a list of pre-release and unused content for the game Mario Party 8.
M809 - Hammer de Pokari
Hammer de Pokari is an unused 4-player minigame from Mario Party 8. It takes place on a giant sand castle in a beach inhabited by Goombas. In this minigame, players must swing the sideways to swing hammers. Its objective is to get most whacks in. After a player is whacked five times, the minigame ends. Every player has a Coin counter on their tallies. However, they are not used for anything in the state of the minigame, or even are changed during gameplay. It was replaced by Speedy Graffiti.
M813 - Guruguru Kataduke
Another unused minigame found in the debug menu is the 4-player minigame Guruguru Kataduke (literally translated as "Round and Round Finish"). In this minigame, the players must spin their in a clockwise fashion to roll up their ribbons, colored according to Mario Party 7's player colors. In the background, there are many present boxes and two Shy Guys on a table. To win the minigame, it is necessary to roll up the ribbon completely. It was replaced by Rudder Madness.
M853 - Ochiruna Rodeo
There is an unused duel minigame in Mario Party 8 called Ochiruna Rodeo, that takes place in a farm, inside a pen where the competitors ride two mechanical bulls. The players must tilt the in the direction of the bulls, or they can fall. The last player standing on their mechanical bull is the winner. It was replaced by You're the Bob-omb.
Toadsworth was planned to be in the game, as there are his unused voice clips found in the brsar file that stores all the sounds of the game. It is unclear what role he was going to take in this game as he has only two voice clips: happy and sad.