Video creatives outperform carousels for gambling ads, I've found that short-form videos under 15 seconds with a clear call-to-action can increase conversions by up to 25%. Additionally, using user-generated content in these videos can boost click-through rates by 30-40%. For instance, a recent campaign I ran in Tier 2 countries saw a 22% higher return on ad spend when using short-form UGC videos compared to carousel ads. Furthermore, targeting specific regions with tailored messaging can also significantly impact performance, with some countries responding better to emotional appeals and others to more logical, bonus-focused messaging.