Chapter 2 of Deltarune has an alternate route which nets players some information that makes for interesting theorycrafting about the main route.
Lingering Thoughts On Deltarune Chapter 2, by Priya Sridhar, SUPERJUMP
Spoiler] [Chapter 2] The Knight's True Identity : r/Deltarune
Everything Wrong With DELTARUNE (Chapter 2) in 20 and a Half Minutes
Deltarune Chapter 2's Alternate Route Raises Dark Implications For The Story Going Forward - Noisy Pixel
SECRET ROUTE Deltarune Chapter 2
Everything Wrong With DELTARUNE (Chapter 2) in 20 and a Half Minutes
Deltarune Chapter 2's chilling alternate route is extremely unsettling
HOT TAKE) It isn't Kris. : r/Deltarune
Deltarune Chapter 2's Alternate Route Raises Dark Implications For The Story Going Forward - Noisy Pixel