Why it worked
The content taps into a common desire for self-improvement and intellectual validation, gamifying language learning and offering a clear, albeit subjective, metric (IQ score) for success. The increasing difficulty and the final call to action create a sense of challenge and curiosity, driving engagement.
Summary
This slideshow presents several phrases in different languages, challenging viewers to identify them and their difficulty level based on an associated IQ score. It concludes by directing viewers who can identify all phrases to take an IQ test via a bio link.