I played through some using mutliplayer, though a majority of the later levels were singleplayer. It was a pain to go back and collect enough stars to unlock the final level, nothing sticks out in my memory involving the 3D World. I beat Bowser's Fury separately at a later date, complete 6/17/2024. Bowser's Fury felt cheap to start, though it just took warming up to and I blasted through it over two or three days. Bowser's Fury was much more enjoyable than 3D World, the moons that required you to wait for Bowser wake up were annoying as the stockpiled up until the very end and I had to wait around a lot to polish them off.