Suggestion for Parallel World

[MAup]

TL;DR

I will be suggesting a parallel underground world, a new layer of the world as it is.

What ?

My suggestion is to have a parallel world, underground to be explored.
An underground world, where there may be grottos, infested with aliens, new ones and existing, and also more resources.
Drills may be needed to make new tunnels, and above ground passages.
Explosives will have new means of clearing a cave out, and landfill to cover up a cave entrance or tunnel.

Why ?

This will add a whole new aspect to factorio, not put it on a new path, but expand it vastly.
Giving the ability to create more flexible constructions, and have a new world to explore.
A lot of things we create already, will be of great valuable, like lamps or explosives.

I want to keep this suggestion short, and if someone have similar ideas, or this gives you new ideas, you are very well welcome to discuss this topic here.

[darkfrei]

Like this?

The Long Nauvis
https://mods.factorio.com/mods/ljdp/TheLongNauvis

[MAup]

Ah, not at all, more like an underground view of the top world, where various underground configurations can be made for various things like underground belts, but also have trains go underground.
Together with an element of having a proper defence for your underground advances in terms of spelunking into the depths of the alien planet.
Perhaps in a way however, where another layer of world could be added later on, and finally take advantage of the energy of the planets core for electricity or other technologies.

[AntiBlueQuirk]

[...] but also have trains go underground.

Actually, the idea of having trains go underground is rather compelling. There would be lots of things you could do with it, and I'm sure I've seen suggestions for subways and underground train tunnels around here recently.

[MAup]

Actually, the idea of having trains go underground is rather compelling. There would be lots of things you could do with it, and I'm sure I've seen suggestions for subways and underground train tunnels around here recently.

Ah yes, however this would just be a biproduct of the whole concept of an underground world.
The posibilities are just limited by ones imagination of what you can find underground!

[ssilk]

Added to viewtopic.php?f=80&t=24090 Collection of End-Game-Ideas / Enhancing Endgame

[Jap2.0]

Actually, the idea of having trains go underground is rather compelling. There would be lots of things you could do with it, and I'm sure I've seen suggestions for subways and underground train tunnels around here recently.

Ah yes, however this would just be a biproduct of the whole concept of an underground world.
The posibilities are just limited by ones imagination of what you can find underground!

Many people have suggested train tunnels and bridges before, but I've heard we won't have them due to some complications. Of course, some of this would be alleviated by having an entire underground... but that would make the game a bit too complex, in my opinion. There would be tons of little things that would have to be solved: how do you transfer materials between layers? Can belts go underground and stay there, effectively making underground belt length infinite? How do bots move between layers? And so on.