I can imagine you are mildly confused.
Yes, someone's really working on a North Korean Set.
No, I am not affiliated with North Korea, or am I?
Yes, this set is on BaNaNas.
The North Korean Train Set
The North Korean Station Set v2
The North Korean Track Set
The North Korean Houses Set v2
The North Korean Industry Set
The North Korean Tram Set
The North Korean Road Vehicle Set v2
The North Korean Town Names
The North Korean Train Set

So I was looking for country specific NewGRFs, and when I found a Korean train set, I wondered why there was no North Korean Train set. Because, who wouldn't want to play a scenario in a country, run by your favourite barnyard animal.
Credits:
Coding: Erato
Graphics:
- All: Erato
- Icons: Purno
Changelog:
1.12
Added: Buffed DK4 metro
Added: Livery for smallest narrow gauge diesel locomotive
Added: Liveries for 200, 300 and 900 series diesel locomotives
Added: Livery for K62 diesel locomotive
Added: Liveries for Juche EMU
Changed: All locomotives now refit to passenger instead of goods
Changed: Roof of pre-war railcars darker
Changed: Redone sprites for 200, 300 and 900 series diesel locomotives
Changed: 300 and 900 series diesel locomotives made smaller
Changed: Tweaked 1000 series EMU sprite
Fixed: Horizontal sprite of narrow gauge diesel locomotive wrong way around
Fixed: Red Flag 2000 purchase sprite 1 pixel off
Fixed: Not being able to change livery on some locomotives
1.11.2
Fixed: Chinese mail van release date
1.11.1
Fixed: Flatcars not displaying steel properly
1.11
Added: Brand new standard gauge electric locomotive
Added: New EMU
Added: Silo wagons
Added: New open wagons
Added: New covered wagons
Added: New intermodal container wagon
Added: Variety in existing standard gauge open wagons
Added: Old steel coaches
Added: New sleeper coach varieties
Added: New brake van varieties
Added: Narrow gauge brake van livery
Changed: Intro date of Chinese train carriages changed to 2015
Changed: EMU name
Changed: Some sprites tweaked
Changed: Small narrow gauge diesel locomotive buffed
Changed: Standard gauge brake van resprited
Changed: Some narrow gauge steam locomotives buffed
Changed: Covered wagon resprited
Changed: Armoured wagon resprited
Changed: Armoured wagon accepts more cargo types
Changed: Mail vans accept more cargo types
Changed: White stripe from old coaches removed
Changed: Shape of standard gauge hopper cars to be more like the real thing
Changed: Edited sprite of 6000 series locomotive to look more like the rest
Changed: Intermodal container wagon now has two containers
Changed: Windows of modern sleeper train tweaked
Changed: Extra loading levels for some wagons
Changed: Flat wagons can now carry bulk cargo
Changed: Some open wagons get a tarp for goods that need to be covered
Fixed: Freight wagon names inaccurate
Fixed: Some incorrect stats
Fixed: Some railtype labels set incorrectly
Fixed: Brake van too long
1.10
Added: New narrow gauge diesel locomotive
Added: Different length EMUs
Added: Option to disable Juche EMU changed to option to make the Juche EMU either as it is used, or as it was meant to be used.
Changed: Name of locomotive and metro train
Changed: Release date of EMU
Changed: Juche EMU sprite tweaked
Changed: Tweaked blue carriage sprite
Changed: Tweaked new narrow gauge electric locomotive sprite
Fix: Alignment of trains looked bad in the vertical direction
Fix: Freight cars of other NewGRFs not connecting properly
Fix: Some locomotives carrying freight
Fix: Brake van too long
The North Korean Station Set

The North Korean Track Set

Download, also on BaNaNas!
Changelog:
1.7
Added: Parameter for urban tunnels
Added: Map colours for tracktypes
Fixed: Urban tracks showing the wrong tunnels
Fixed: Missed pixels on urban tracks
1.6
Added: Snow awareness
Fixed: Tunnels now compatible with OpenGFX+ Landscape
Changed: Subway darker to reflect changes in v2 of the house set
Reverted: Narrow gauge tracks have the same pylons again
The North Korean Houses Set v2

Download, also on BaNaNas!
The North Korean Industry Set

Download, also on BaNaNas!
Changelog:
1.1
Fixed: Integer overflow in cargo prices.
Changed: Production mechanics completely overhauled to smoothen secondary industry production.
Changed: Improved Iron Ore Mine sprite.
1.0
Initial release
The North Korean Tram Set

As seen in Pyongyang and Chongjin!
Download, also on BaNaNas!
Changelog:
1.4
Added: Pre-war trams
Changed: Changed metre gauge tram sprite
1.3
Fixed: Alignment issue
1.2
Added: Articulated KT4K
Added: KT4K livery
Changed: Non-articulated KT4K made much longer
Changed: Added NRT compatibility (BE44 runs on narrow gauge if available)
Changed: Added tramtype symbol to purchase window sprites
1.1
Changed: KT4K is now Green instead of Red.
Feature: T4D is now available in multiple liveries.
Feature: T6B5K is now available in multiple liveries.
Added: Chollima 1 tram.
1.0
Initial release
The North Korean Road Vehicle Set

Download, also on BaNaNas!
Changelog:
2.2
Added: More trolleybus liveries
Changed: Tweaked Sinhungho-2 sprite
2.1
Added: New buses
Added: Van
Added: New livery for chollima 321 trolleybus
Changed: Cargo awareness added to all freight vehicles
Changed: Intermodal containers changed to match the trainset's
Changed: Tweaked sprite offsets to look nicer
2.0
Added: Trolleybuses
Added: More vehicles
Changed: Redid all sprites
The North Korean Town Names
A companion NewGRF for the rest of the North Korean Set. With 185 real North Korean Town names, or 7150 generated ones!

Download, also on BaNaNas!
License: Disclaimer: Please don't take things too serious here.
This NewGRF has been born out of a jokish idea. This NewGRF was never meant as a political statement. This NewGRF is not made with the intention to insult anyone, including the people of North Korea. I am sorry if you are offended in any way with this NewGRF, this post, or any related post on any forum. Except if you're the Supreme Leader.
I, the author, do not approve of the actions of the government of the DPRK, who starve, brainwash, and enslave their own people.