Game:

Factorio (2020)

Duration: 0:00

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From the far side of Fulgora emerges its small, frozen moon, covered in a sheet of methane ice and home to the ruins of powerful technology unlike anything the engineer has seen before.

Welcome to Cerys, the moon of Fulgora
https://mods.factorio.com/mod/Cerys-Moon-of-Fulgora
Mod created by thesixthroc, and with art by Tserup

Cerys has a lot of interesting puzzles whose solutions this video will spoil. It is by far the best modded planet I've been to so far, so if you're interested in trying this one out, maybe go there before watching this video to avoid spoilers. This mod can be installed on a pre-existing save at any stage of the game. Travel to Cerys requires only space science and can be discovered at the same time as Fulgora.

CORRECTION: I stated the recipe loop mentioned at 09:02 to be net-negative. This is wrong, it's actually net positive, I just didn't do the math and assumed it to be negative.

Cerys is a Welsh name meaning "love" or "loved one".

00:00 Intro
00:47 Welcome to Cerys
03:13 Thawing out
04:49 We have iron... kind of
05:56 Particle power
07:59 Trash to treasure
09:25 Science begins...
10:57 SWEET GLEBA IT'S ENORMOUS
13:03 The Question of Carbon
14:50 Starting again
16:51 Opinions
18:49 Outro