Chapter 3 was alright, but since the main story mostly takes a back seat for most of it, felt weak compared to other chapters. It also felt quite repetitive due to a large chunk being spent inside the 8-bit meta game. Chapter 4 more than makes up for all of this though, and is absolutely my favorite part of Deltarune so far. Just an absolute banger through and through, and though its runtime is comparable to 3, it feels much more grand and meaningful.