Quiz Friends

Video thumbnail for Bb-R-4kr0tI

Gather your Quiz Friends and discover the new kind of quiz games now with Quizfriends! Play fun and exciting quizzes and MAKE MONEY online for free! Every correct answer will be rewarded in Quizfriends! Earn coins, convert your coins into diamonds with the help of your robots and exchange your diamonds for real money and gift cards. So easy and fun!

Quiz Friends was a real-money quiz game developed over a year with a 7-person team. It featured 3000+ trivia questions, each with short GIF animations from the GIPHY API. The game let users earn real cash by collecting coins in quizzes or completing offers, then converting those coins into diamonds and eventually real money or gift cards.

We built it in Unity with a custom Heroku backend handling user authentication and game logic. Payouts were handled through PayPal as the payment provider. On our side we built wallet management, automated PayPal verification to reduce payout time from days to hours, basic fraud detection heuristics, and error handling for payment failures. We also built a chatbot for customer support.

The system had to handle concurrent quiz sessions, real-time score calculations, and content delivery for thousands of questions with media.

It was a challenging project because implementing a fast, reliable payout system was crucial for user trust. We had to detect fraud without creating friction for legitimate users, which required a lot of fine-tuning.

Play
https://play.google.com/store/apps/details?id=de.mobileheroes.quizfriends