Hey there!— Dotemu (@Dotemu) March 12, 2018
Yes, it's based on the 20th Anniversary version with some additions. :)
I don't think there's any other game I've bought more than Out of This World. Whatever platform it heads to, I can't help myself. I just have to buy it. It's such a major game in my gaming history. An experience that has stuck with me all these years, and still remains just as enjoyable today. For those who have never played it, I sure hope you give the Switch version a shot!