adamantiumxt

Just remember Lazy Town was made with Unreal Engine ;)

I think he means what click-rate the ads have

Yep, for compositing the green screen video in real-time. It let the director see the virtual backgrounds live while they were shooting. Remember the show had a $1,000,000 budget per episode. You can read more about it here: https://www.unrealengine.com/en-US/blog/lazytown