How do you get minigame wagon open in Mario party 8?

To unlock the Minigame Wagon in Mario Party 8, you need to complete the game's various minigames. Initially, you must play through the Party Mode and collect enough coins and minigames to unlock it. Once you have unlocked enough content, the Minigame Wagon will become available in the game's main menu, allowing you to access and play the minigames you’ve collected.