Boris

Boris

Boris Pfeiffer is the co-founder and CEO of Riddle.com, a leading platform for interactive quizzes and audience engagement. He brings a wealth of experience from the gaming and tech industries, having previously led Kabam's European operations and founded his own game studio. Earlier in his career, Boris served as General Manager of Monster.com's Internet Advertising Division in Europe. Boris has deep roots in the quiz industry. As General Manager Europe for Tickle.com, he helped scale the popular quiz portal into the world's 28th largest website by 2004, leading to its acquisition by Monster.com for over $100 million. During this time, he managed international teams of quiz writers and psychologists, developing quiz content for brands, mobile apps, and millions of users across Europe in multiple languages. In addition to his work in quizzes and gaming, Boris has supported a variety of startups across Asia, the U.S., and Europe. He is the author of two books - Facebook Fan Pages (2011) and Quizmaster (2017) - and a proud father of two. He has been happily married for over 25 years.


Header Personality Quiz Question Format. What type of questions perform better: Likert Scale or situational questions?

Riddle Lab – Personality Quiz Question Format

Riddle Lab – Personality Test Questions Experiment: Do simple Likert scale questions perform better or worse than situational questions and answer options in a personality quiz? What do you think? What kind of questions perform better in Personality Quizzes? Likert Scale Situational Questions Why do […]

Read more
Header Pop-Up vs. Quiz: Which converts better?

Riddle Lab – Pop-up vs. Quiz

Experiment: Form completion rates of a pop-up vs. embedded quiz Does a pop-up with a newsletter sign-up form outperform an embedded quiz with the form placed at the end of the quiz? What do you think? Do pop-ups generate more leads than a quiz? Yes, […]

Read more
Header: Form Skip Option: What is the effect of adding a skip option to a form block?

Riddle Lab – Form skip option

Experiment: Skippable vs. Unskippable Forms What is the effect of adding a skip option to a form block on its completion rates? Introduction Building a list of newsletter subscribers through zero party data is the most cost efficient way to reach existing and new customers […]

Read more
Header: Optimal Lead Form Placement. What is the optimal placement of form blocks in your Riddle?

Riddle Lab – form placement

Experiment: Form Placement What is the optimal placement of form blocks in your Riddle? Introduction When gathering user information through quizzes, one crucial aspect to consider is the strategic placement of the form block. Determining where to position the form within your quiz can significantly […]

Read more
Riddle quizmaker is the best alternative to Typeform

Riddle is the best alternative to Typeform

Typeform vs Riddle – which quiz maker is best? There are several online quiz makers out there – today, let’s compare Typeform vs Riddle. Are you looking to create a quiz to power your marketing funnel? Today’s marketers are turning to quizzes to collect leads—savvy […]

Read more
Riddle Release Log 2025

Riddle Release Log

New Features & Improvements Our release log is diligently updated each time we introduce new features to our interactive content tool and lead generation platform. You can also visit our release log archives for 2023 and 2024. Sign up for our newsletters and never miss a […]

Read more
Collect rich first party data using Riddle's Data Layer

Collect rich first-party data with Riddle’s Data Layer

Quizzes, polls, and personality tests are among the best ways to collect rich first-party data. By combining answers to quiz questions and data willingly shared by the quiz taker (like name and email), you can segment your user data. This allows you better, more targeted follow-up […]

Read more
Use Riddle quizmaker to create a live online quiz contest to engage your audience

Create a live online quiz contest to engage your audience

Boosting engagement & collecting entries with a live online quiz Making your own live online quiz contest with Riddle’s quiz maker is easy. Fun, interactive quizzes turn passive observers into active, enthusiastic (& clicking) participants. Online quizzes (like the BBC’s Riddle-powered ‘Quiz of the Year’) […]

Read more
Create your own WhatsApp quiz in 5 minutes with Riddle quizmaker

Create your own WhatsApp quiz in 5 minutes

Engage with quizzes on WhatsApp Want to create a WhatsApp quiz? Quizzes are a proven way to engage your audience and collect leads to grow your business. We make it easy to create a WhatsApp quiz – so your quiz takers can spread your quiz […]

Read more
Create a "Big Five" personality quiz with Riddle quizmaker

Create a ‘Big Five’ personality quiz

Big Five and the OCEAN model Want to create a ‘Big Five’ personality quiz – centered around the ‘Big Five’ or ‘OCEAN’ model? Rooted in psychology, the ‘Big Five’ is based on the five personality traits that capture all core human personalities – from your […]

Read more
Scroll to Top