>>528376463
Tropic island is a hot climate, was meant to refute the "Susie says it's cold" comment or whatever
Also see >>528376378
>and what paralels to waterfall are in chapter 4?
Gerson from Waterfall, using Undyne's theme, blue color scheme, most serious part of the game so far, piano playing, Spooktube in Napstablook's house is Jackenstein's theme