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I am trying to create a list of Imperial worlds order by their importance to the Imperium. I'll do my list and if anyone has anything to add or perhaps a re-ordering that would be great!

1. Holy Terra
2. Cadia
3. Mars
4. Armageddon
5. The 4 Segmentum Headquarters worlds (Bakka, Kar Duniash etc.)
6. Agripinaa (forge world that supplies Cadian Gate)
7. Macragge
8. Major IG Regiment worlds (Catachan, Mordia, Tallarn etc.)
9. Baal
10. Ophelia IV (most important Ecclesiarchy world other than Terra)
11. Voss Prime (forge world that supplies Armageddon)
12. Titan

I feel like I'm missing a few here.

Gathalamor and Chiros --- two of the four legs on the Terra - to - Ophelia VII Grand Pilgrimage .

Necromunda --- ground zero of the Redemptionist movement.

Technically Titan is not a planet, it is a moon.

Mars is more important than Cadia.

Macragge isn't that important really, the Ultramar system is quite important to he Eastern Fringe, but nowhere near top 10 status, or even top 50.
Armageddon is an important world, Ryza is an important world. Macragge isn't really that important.

Terra
mars
Armageddon
Graia/ every other forge world
Space marine chapter home world's
The rest

 Sir Samuel Buca wrote:
Macragge isn't that important really, the Ultramar system is quite important to he Eastern Fringe, but nowhere near top 10 status, or even top 50.
Armageddon is an important world, Ryza is an important world. Macragge isn't really that important.

Macragge is very important, it's the lynchpin of Ultramar and the Imperium's Eastern Fringe.
Additionally when the Ultramarine's second company was defeated at Damnos the blow to morale Imperium-wide was severe. If someone were to take Macragge, probably wiping out the Ultramarines in doing so, morale would be crippled.

I think that I'd put Ophelia IV up a bit higher. Unlike worlds that are just notable for being recruiting worlds for SM Chapters or IG regiments, it's important to the entire Imperium and its working, being a centre for the Imperium-spanning Ecclesiarchy as well as a potent symbol of Imperial faith.

Edit: Half of the SoB Major Orders are based there too, so its also of military value.

All equal


To Nids

Fenris and all the other worlds near the eye of terror. They keep Abbadon at bay.

Terra
Mars
Cadia

Those are the only three that can not be lost no matter what.


Automatically Appended Next Post:
Terra
Mars
Cadia

Those are the only three that can not be lost no matter what.

I'm not sure about mars you know... yes in the short term it would be a huge blow. But the mechanicum believe in techno-heresy and the stagnation of technological advancement. If the mechanicum lost its heart, not only would the mechanicum lose much of its power (which is not always used to benefit the imperium itself) and therefore partly reduce the fractured nature of the imperiums hierarchy, but it would also enable humanity to begin hesitant steps towards technological advancement again, rather than relying on the discovery of STC systems.

There is the other side of the coin that it would reduce productivity short term when it is most needed, it would be a massive blow to the imperiums moral and it has the potential to release the void dragon. But hasn't the void dragon within mars instead been retconned to be just a very powerful shard rather than a full C'Tan anyway?

Terra all others below.
Mars
Cadia
Major fprgeworld next. The loss of one stops arms supply to hundreds.

Even a very powerful shard can ruin your day.

Mars is also the last, final repository of the sum of all human knowledge that has been recovered since the Heresy. Losing Mars means losing the Imperium, as it is from Mars that the secrets of technology come.

Without Mars, the Forge Worlds, one by one, fall silent, as the rites and rituals of maintenance and repair are lost, and the machines break down and cease to function.

The orbital shipyards stop building ships, as they can no longer acquire the grav-plates and adamantium hulls, the cogitators and the Warp Drives, the Void Shield generators and the oxygen recyclers.

With the Forge Worlds silent and the ship yards empty, the Imperial Guard grinds to a halt as its supply-chain of spare parts for tanks, lasguns, artillery, etc dries up. The Navy, too, can no longer transport them as, over time, ships cease to function, as there are no new Tech-Priests to train another generation.

The Imperium, then, descends into barbarism, as the Hive Cities starve and are unable to defend themselves from the depredations of the Xeno. Planets become isolated, and their societies descend back to a primitive lifestyle, worshipping strange gods and following weird customs. It would take another 15,000 years or so to regain the minimum technology needed to once again reach for the stars.

 Psienesis wrote:
Mars is more important than Cadia.

It is. It houses Mag'ladroth the Void Dragon. PS: the void dragon is the techmarine's god of machinery since he is a master of materials.

 TheCrazyCryptek wrote:
I am trying to create a list of Imperial worlds order by their importance to the Imperium. I'll do my list and if anyone has anything to add or perhaps a re-ordering that would be great!

1. Holy Terra
2. Cadia
3. Mars
4. Armageddon
5. The 4 Segmentum Headquarters worlds (Bakka, Kar Duniash etc.)
6. Agripinaa (forge world that supplies Cadian Gate)
7. Macragge
8. Major IG Regiment worlds (Catachan, Mordia, Tallarn etc.)
9. Baal
10. Ophelia IV (most important Ecclesiarchy world other than Terra)
11. Voss Prime (forge world that supplies Armageddon)
12. Titan

I feel like I'm missing a few here.

It seems about right, except I'd remove macragge, stamp on it a few times and set it on fire.
And then throw it to the bottom of any conceivable list. But that's just me.

 Psienesis wrote:
Even a very powerful shard can ruin your day.

Mars is also the last, final repository of the sum of all human knowledge that has been recovered since the Heresy. Losing Mars means losing the Imperium, as it is from Mars that the secrets of technology come.

Without Mars, the Forge Worlds, one by one, fall silent, as the rites and rituals of maintenance and repair are lost, and the machines break down and cease to function.

The orbital shipyards stop building ships, as they can no longer acquire the grav-plates and adamantium hulls, the cogitators and the Warp Drives, the Void Shield generators and the oxygen recyclers.

With the Forge Worlds silent and the ship yards empty, the Imperial Guard grinds to a halt as its supply-chain of spare parts for tanks, lasguns, artillery, etc dries up. The Navy, too, can no longer transport them as, over time, ships cease to function, as there are no new Tech-Priests to train another generation.

The Imperium, then, descends into barbarism, as the Hive Cities starve and are unable to defend themselves from the depredations of the Xeno. Planets become isolated, and their societies descend back to a primitive lifestyle, worshipping strange gods and following weird customs. It would take another 15,000 years or so to regain the minimum technology needed to once again reach for the stars.

Maybe not that grim as there are other mechanicum worlds with far more adepts and tech priests on other planets (alltogether) than there are on mars. I do think if the imperium could survive the fall of mars, it would help towards stopping the technological stagnation.

Mars is where their data is kept, and from whence the patterns of STC come from. It is from Mars that the Mechanicum receives its orders, and from whence it receives its instructions.

Without Mars, and its repository of knowledge, the cargo-cultism of the Adeptus Mechanicus will only grow worse, not better. They fully understand the nature of invention. They are conservative and stagnant for a reason... because invention leads to experimentation, which leads to Chaos, as it has several times throughout history.

Without Mars, the passage of time means that what knowledge is currently possessed will, eventually, be lost.

The Imperium is not grim, dark and crappy because all it needs is one sensible person to come along and fix it, it is grim and dark and crappy because that is the absolutely best result that could be achieved given the absolutely best choices that could be made under the circumstances.

The sensible person wouldn't last thirty seconds in the setting.

Lol that's very true common sense does not apply to the imperium!
Do note though that throughout the fluff there is mention of STCs based on forge worlds and mechanicum worlds.
I see your point though.

STCs are found... well, not entirely, but fragments of them... throughout the galaxy. Every Forge World possesses a quantum computer that links it directly to Mars (the AdMech does not use Astropaths to communicate with Mars). This permits near-instantaneous transmission between Mars and the linked Forge Worlds.

When an STC fragment is found, it is sent to Mars for study. The Arch-Magi of Mars spend years, centuries even, studying the fragment, to determine what it is, where it fits in with other recovered STC fragments, whether or not it is corrupted (which happened on a grand scale during the war with the Iron Men, and again during the Heresy), and what function is has.

If it all checks out, then Mars sends a copy of the file back to the Forge World that sent it, and tells them how to build it.

During the heresy when the scrap code was released, did Mars lose most of its knowledge? I haven't read that book in a couple of years. If so then the mechanicum has recovered from it before. You've convinced me that Mars is more important than I thought.

Yep. Mars is a fething hellhole of a planet.

As everyone has seemed to agree on above:

Terra
Mars
Cadia

These are currently essential planets. A lot of other planets (particularly forgeworlds) filter in below these.

 Sir Samuel Buca wrote:
Macragge isn't that important really, the Ultramar system is quite important to he Eastern Fringe, but nowhere near top 10 status, or even top 50.
Armageddon is an important world, Ryza is an important world. Macragge isn't really that important.

Macragge is a weird world. The empire of ultramar is almost a protectorate (though a REALLY ENTHUSIASTIC protectorate that likes to help the empire all it can). It can function independently if it needs. It's important because of the huge benefits it provides to the Empire, but it is not like some forgeworlds, which are absolute necessities to systems. If macragge fell, it'd be a horrible blow, but it wouldn't be a deathknell for systems beyond ultramar. It might be a strategic loss, but for these reasons it would be far beneath the importance of the forgeworlds, and other such worlds that allow the survival of many others by their very existence. Though Maccragge is important strategically, if it suddenly disappeared in a supernova or something, a series of other worlds wouldn't instantly disappear.

 Psienesis wrote:
They are conservative and stagnant for a reason... because invention leads to experimentation, which leads to Chaos, as it has several times throughout history.

The Imperium is not grim, dark and crappy because all it needs is one sensible person to come along and fix it, it is grim and dark and crappy because that is the absolutely best result that could be achieved given the absolutely best choices that could be made under the circumstances.

Hey ! Do you mind if I steal that for a siggy ? Perfect quote there !. Sums up what I think better than I could have said it.

 Psienesis wrote:


Without Mars, and its repository of knowledge, the cargo-cultism of the Adeptus Mechanicus will only grow worse, not better. They fully understand the nature of invention. They are conservative and stagnant for a reason... because invention leads to experimentation, which leads to Chaos, as it has several times throughout history.

The Tau really are an anomaly in the setting.

The Orks, Tyranids and Tau are the only ones who really invent still. The Tyranids' inventions are more akin to evolution, and while Ork innovation is quick, their civilisation is incredibly disorganised meaning each isolated warband must effectively start from scratch with their inventions.

The Tau, on the other hand, advance in a rapid and controlled manner with their tech.

 Ashiraya wrote:

 Psienesis wrote:


Without Mars, and its repository of knowledge, the cargo-cultism of the Adeptus Mechanicus will only grow worse, not better. They fully understand the nature of invention. They are conservative and stagnant for a reason... because invention leads to experimentation, which leads to Chaos, as it has several times throughout history.

The Tau really are an anomaly in the setting.

Or you just don't believe any of the Lizard mens " Greater Good " crap , as , a priori , it doesn't add up.

Why Armageddon is so important?


Automatically Appended Next Post:

 Ashiraya wrote:


The Orks, Tyranids and Tau are the only ones who really invent still. The Tyranids' inventions are more akin to evolution, and while Ork innovation is quick, their civilisation is incredibly disorganised meaning each isolated warband must effectively start from scratch with their inventions.

Tyranids evolution has nothing similar with natural evolution. Natural evolution is a random process, meanwhile Tyranid evolution is a guided and intelligent process.

 TheCrazyCryptek wrote:
I am trying to create a list of Imperial worlds order by their importance to the Imperium. I'll do my list and if anyone has anything to add or perhaps a re-ordering that would be great!

1. Holy Terra
2. Cadia
3. Mars
4. Armageddon
5. The 4 Segmentum Headquarters worlds (Bakka, Kar Duniash etc.)
6. Agripinaa (forge world that supplies Cadian Gate)
7. Macragge
8. Major IG Regiment worlds (Catachan, Mordia, Tallarn etc.)
9. Baal
10. Ophelia IV (most important Ecclesiarchy world other than Terra)
11. Voss Prime (forge world that supplies Armageddon)
12. Titan

I feel like I'm missing a few here.

Baal should be lower, if it ranks at all. If something happened to Baal, the Blood Angels could always recruit on another world. Other chapters have lost home worlds and continued without them.

 KesaAnna wrote:

 Psienesis wrote:
They are conservative and stagnant for a reason... because invention leads to experimentation, which leads to Chaos, as it has several times throughout history.

The Imperium is not grim, dark and crappy because all it needs is one sensible person to come along and fix it, it is grim and dark and crappy because that is the absolutely best result that could be achieved given the absolutely best choices that could be made under the circumstances.

Hey ! Do you mind if I steal that for a siggy ? Perfect quote there !. Sums up what I think better than I could have said it.

Sure, though let me link you to the article where it is drawn from (some NSFW language):

http://1d4chan.org/wiki/Adeptus_Mechanicus

Skip down to the "Why Everything is so Grimdark" bit.

The Tau really are an anomaly in the setting.

The Orks, Tyranids and Tau are the only ones who really invent still. The Tyranids' inventions are more akin to evolution, and while Ork innovation is quick, their civilisation is incredibly disorganised meaning each isolated warband must effectively start from scratch with their inventions.

The Tau, on the other hand, advance in a rapid and controlled manner with their tech.

The Tau had 6000 real-time years locked away inside a Warp Storm. Within that storm, we have no idea what happened, or how much time passed. Most importantly, they had at least 6000 years of peace. The Imperium has never had that.

jhe90 wrote:
Terra all others below.
Mars
Cadia

Might also point out that Mars and Terra are in the same system.{duh!}

Losing Mars would not only be a great loss to the IoM it would put Terra directly under threat.

Outside of Terra itself, there is no planet of greater strategic value than Mars, because it is the gateway to Terra.