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Eu Duvido!
Bluffing trivia party game: bid a number or call EU DUVIDO!
A Brazilian party game for iPhone (in Portuguese). Each round asks a question with a number answer nobody knows, like how many km of blood vessels are in your body. Players bid "that or more"; the next one raises or shouts EU DUVIDO! (I doubt it!). Then the answer is revealed and someone loses a life. 2 to 8 players on one phone passed around, or each on their own phone with a room PIN. 700+ hand-picked questions with sources.
Hey Product Hunt! 👋
I'm Giuseppe, a solo dev from Brazil. Eu Duvido! means "I doubt it!": it's a bluffing game where every question has a number answer that sounds like a lie. You don't need to know the answer, you need to bluff better than your friends and doubt at the right time.
Some things I learned building it:
• A good question is one where people are sure they know and miss by 100x. I threw away 109 of my first 708 questions.
• Party games spread in groups, so you can play on a single phone or create a room with a PIN.
• Built with Expo, Supabase (realtime rooms) and RevenueCat.
It's in Portuguese for now. If you have Brazilian friends, I'd love for you to try it at your next hangout and tell me which question started the biggest fight. 😄
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About Eu Duvido! on Product Hunt
“Bluffing trivia party game: bid a number or call EU DUVIDO!”
Eu Duvido! was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #84 on the daily leaderboard. A Brazilian party game for iPhone (in Portuguese). Each round asks a question with a number answer nobody knows, like how many km of blood vessels are in your body. Players bid "that or more"; the next one raises or shouts EU DUVIDO! (I doubt it!). Then the answer is revealed and someone loses a life. 2 to 8 players on one phone passed around, or each on their own phone with a room PIN. 700+ hand-picked questions with sources.
Eu Duvido! was featured in iOS (111k followers), Indie Games (7.2k followers) and Games (99k followers) on Product Hunt. Together, these topics include over 74.5k products, making this a competitive space to launch in.
Who hunted Eu Duvido!?
Eu Duvido! was hunted by Giuseppe Bertholdi. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Giuseppe Bertholdi