mysteryman on 22 December 2014
Such a tough choice.
I'd probably give it to Tropical Freeze. The difficulty was spot on and there were plenty of varied and novel stages.
That said, NSMBU was also fantastic. Despite the series suffering from massive franchise fatigue, I still found the level design to be fresh and fun, which is a pretty amazing feat IMO.
NSLU should be on the list too, it's a speedrunner's delight.
