Carnival Cards are the currency that is used in Mario Party 8's Star Carnival. It is earned by playing in the 4 tents and can be exchanged in the Fun Bazaar for prizes, such as new mini-games, sound clips, figures and more.
- Party Tent: Battle Royale / Tag Battle: 20-100 (Depending on the number of turns in a game)
- Party Tent: Duel Battle: 20
- Star Battle Arena: 200
- Minigames: 1 each
- Test for the Best: 10-100
Cards earned for playing mini-games can only be earned through playing in the Free Play Arcade and not in the Battle Royale Mode or Star Battle Arena. Mini-games are counted up and the cards are awarded upon exiting minigame mode. No additional cards are rewarded for minigame competitions.