Around 4 hours 55 minutes to complete these 8 main worlds, which triggers the ending. Theres 2 additional worlds that are optional as well. I will post those in a seperate playthrough video if I complete those.
There was really only 2 stages that gave me alot of trouble. I was able to pull some bullshit to skip certain sections. That also took time to find and pull off. This game is much easier than the originial Monkey Ball games since it was originally for the Wii designed around motion control. That version is very hard to control. This game feels much better with the analogs, even controlling better than the Monkey Ball Banana Mania remake on the console. I played through that game recently on the channel too.
Deaths edited out, except for bonus stages. This game has unlimited continues so lives dont matter. The 9th world seems to unlock just for clearing the 8 main worlds. For the 10th world Im not sure yet.