Doubt! Online Bluff Card Game
Contains adsIn-app purchases
Everyone
info
1+
Downloads
About this game
You can see everyone's card. Except your own.
Use the visible numbers to work out the real total—and decide who is bluffing.
Doubt! is a card bluff game of numbers, nerve, and skills. Take turns naming a number higher than the last bid. Think the bid has gone above the total? Call DOUBT. Every card is revealed, and the result decides who loses a heart.
PLAY WITH 2–7 PLAYERS
Join an online match or use a passphrase to meet friends in a private room. Private rooms let you choose the player count and skill rules.
CHANGE THE GAME WITH SKILLS
Your choice of skills and when you use them can turn the round around. Read the table, plan your move, and take your chance.
PRACTICE SOLO
Play against AI or learn through the guided tutorial before taking on other players.
BE THE LAST PLAYER STANDING
Lose all your hearts and you're out. Stay in the game to claim the win.
Available in English, Japanese, Korean, German, and Hindi. Online features require an internet connection.
Use the visible numbers to work out the real total—and decide who is bluffing.
Doubt! is a card bluff game of numbers, nerve, and skills. Take turns naming a number higher than the last bid. Think the bid has gone above the total? Call DOUBT. Every card is revealed, and the result decides who loses a heart.
PLAY WITH 2–7 PLAYERS
Join an online match or use a passphrase to meet friends in a private room. Private rooms let you choose the player count and skill rules.
CHANGE THE GAME WITH SKILLS
Your choice of skills and when you use them can turn the round around. Read the table, plan your move, and take your chance.
PRACTICE SOLO
Play against AI or learn through the guided tutorial before taking on other players.
BE THE LAST PLAYER STANDING
Lose all your hearts and you're out. Stay in the game to claim the win.
Available in English, Japanese, Korean, German, and Hindi. Online features require an internet connection.
Raise the bid or call DOUBT. Bluff online with 2–7 players or practice with AI.
Updated on
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What’s new
Fixed UI scaling and safe areas across screen sizes. Fixed banner overlap with Solo and Tutorial buttons. Removed the custom startup ad choice; ads now use non-personalized delivery.
App support
About the developer
FJ STUDIO
support@fjstudio.jp
1-2-2, UMEDA, KITA-KU
OSAKA EKIMAE NO.2 BLDG. 12-12
OSAKA, 大阪府 530-0001
Japan
+81 80-2511-4267