Something With "Depth"

I've never REALLY played Minecraft (I've only messed around with creative and building things), never played but am somewhat interested in Hytale, and never played but very interested in Vintage Story.

MC has a mod pack called Abyssal Ascent, which stacks like 8-12 different dimensions on top of each other (like the nether, plus a bunch of other custom modded ones) and you have to climb your way out from essentially the center of the world. Haven't played this one either, but I've seen some cool videos and read about it.

I'm kinda looking for something that would scratch that modpack itch, but in reverse. Something that starts on the surface, and just keeps going down, finding different layers the deeper you go.

I'm also cool with general pros/cons between MC, Hytale, and Vintage Story; I'm leaning heavily toward VS.

Edit: I appreciate the suggestions so far, I've added a couple to my wishlist. I would like to add that I probably should have specified that I prefer 3D games to 2D, and I put "depth" in quotes in the title because I'm looking for physical depth to dig down into, but I do like deep mechanics and systems too.