You might find it when you click on the 'open' from 'scenarios'.
I downloaded Greenfoot like, 6-7 months ago, and I downloaded version 2.3.0, and what I got was 'wombats', 'lunarland', little-crab' and 'balloons'. (i'm not sure if balloons is the right name, since I put that to who knows where?)
Thank all of y'all for your replies, especially danpost. I panicked for no good reason as they are linked to the tutorial page now instead of being installed as a bundle element with the version nowadays, I guesss. All good.