What can I really say about Undertale that hasn’t already been said? For me personally, having Undertale on another platform with a clean slate is already a huge advantage given the onset of guilt that comes from a certain garden plant, but we won’t be going into that today.
For first time players, I can’t say enough about starting your experience on PC for the “true experience.” However, if you’re adamant, the Switch version will do just fine. There are even a few little extras you won’t find in the original PC version, including a secret room full of puns and gags and a boss battle that takes full advantage of the Switch Joy-Con controllers.
Source: Destructoid Undertale for Switch is still fantastic