The Switch version of Cave Story is the “definitive version” of the game, featuring new challenges, gameplay options and enhancements, as well as more levels and additional subtle graphic improvements, future free content updates, and other bonuses yet to be revealed.
Here’s an overview of the game, via Nicalis:
With its striking blend of platforming action, shooting and exploration, Cave Story+ offers plenty of “twitch” for the Switch. But storytelling is a huge contributing factor to its international success. Through a series of brief and often emotional conversations with various characters, players gradually learn the tragic history of the game’s cast as well as its amnesiac adventurer, whose athletic ability and weapon skills are much more advanced than his appearance would suggest.
View a set of screenshots at the gallery.