Brilliant's premium upsell ads ran between lessons, right when users just wanted to get back to learning. Looking at how Duolingo used its cast of characters and kept each ad focused on a single value prop, I proposed a similar approach: one clear idea per ad, with room to entertain rather than push a hard sell.
For some ads, I developed the concept and script. For others, I built on my colleagues' ideas, finding more humor through animation, timing, editing, and sound design. Users liked the ads enough to mention them in App Store reviews, and the new approach lifted trial starts and checkouts roughly 20% over the previous ad. I animated three of the six launched ads, developed the concept for a fourth, and built the character rigs used across the set.