0-1 Dice Block
From the Super Mario Wiki
0-1 Dice Blocks are a type of Special Dice Block appearing in Mario Party 9. They are blue colored dice blocks that, when rolled, allow the player to only roll a zero or one. 0-1 Dice Blocks can be obtained by landing on a Dice Block Space, from a Toad House or by landing on a Spin Space. The 0-1 Dice can be useful if Mini Ztars are ahead or if the Captain wants to land on the space right next to the vehicle. Rolling a 0 simply ends the Captain's turn and does not trigger the occupied space again.
0-1 Dice Blocks reappear in Mario Party 10.
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