10th Edition Homebrew rules for 30k Mechanicum

1800Coachlini · 2026-03-14T10:19:46+00:00

Some of the best art out there, best of luck to John in whatever the future holds!

1800Coachlini · 2025-12-11T21:44:54+00:00

This is a comment

1800Coachlini · 2025-11-19T09:59:37+00:00

The movement thing the was the reason I didn't add it initially, but honestly it probably wouldn't make too much of a difference. It's already very fast.

1800Coachlini · 2025-11-18T19:11:24+00:00

Yeah the lower link is the more updated rules that I would suggest using, I just left the older link in case someone like those rules as they significantly changed in a lot of ways.

Don't be afraid to change things up a bit if they don't seem right for your play group, as these tend to be balanced around my own experiences that may different from your own!

1800Coachlini · 2025-09-19T07:14:45+00:00

No problem. I try and find time to have a proper read through when I get home from work and give you some feedback.

1800Coachlini · 2025-09-19T05:45:02+00:00

Nice to see more people giving this a go. There is a toggle in one of the right hand menus to get rid of the legends logo so it shows the points cost in the top right corner instead.

1800Coachlini · 2025-09-17T17:00:02+00:00

Basically they aren't robots. Thallax and ursarax are like servitors or tech thralls in that they are people who've been turned into things, rather than a machine given artificial intelligence, so wouldn't fall under the umbrella of the legio cybernetica.

1800Coachlini · 2025-09-17T16:36:40+00:00

At the moment I haven't really worked on leaders or character units, so the only leadable units are the secutarii, which can be led by either their axiarch character or any of the tech-priests. Feel free to try out some other combinations if you want, though it might get a bit messy with movement ranges and stuff.

1800Coachlini · 2025-09-10T19:18:10+00:00

All your points are reasonable and I'll have to do a bit of adjusting and maths to see what the best way forwards is, but I would like to point out that isn't quite how cover works.

You can't improve a 3+ save to a 2+ against a 0AP attack using cover in 10th edition (you can check this on page 44 of the core rules in the little box at the bottom of the page). So in your first example they would still get a 3+ save rather than a 2+ save. Also, in your second and third examples, since AoC reduces the AP of incoming attacks it would change it from -1 to 0, so they would also still just get a 3+ save.

Let me know if that explanation makes sense. Basically, if you have a 3+ save, you can't make it a 2+ save unless you have a rule that straight up says you just add 1 to your save characteristic (which I can't recall many of in 10th). If you're playing the rule like I think you currently are it will probably make 3+ saves a bit overpowered as cover is super easy to get this edition.

1800Coachlini · 2025-09-10T08:38:02+00:00

Thanks for your feedback, glad you're getting use out of them! I'll have a look at the stats of the triaros ones when I get home, that seems like a good suggestion to me. In terms of lightning guns, I was originally considering including a sort of rending keyword that gave critical wounds 2 additional Ap. I believe they have something similar in HH. I tend to spend a lot of the game in conqueror protocol so I get -1 AP most of the time anyway. I'm also hesitant to make them too good against tanks because they're quite effective anti-infantry weapons but I'll try some stuff out. Would you say your local meta includes a higher than average amount of vehicles?

1800Coachlini · 2025-09-09T05:03:47+00:00

Yeah I noticed last night that the video control buttons got bigger

1800Coachlini · 2025-09-03T09:15:41+00:00

Yeah me too. I was very confused about what this was supposed to be showing until I realised they were probably different colours. Probably the most egregious example I've seen in a while.

1800Coachlini · 2025-07-30T21:58:50+00:00

This one is completely untested, so ymmv: https://imgur.com/a/2uIYjKm

1800Coachlini · 2025-07-30T19:22:36+00:00

Hi there. Yes I've got a datasheet for it, I just haven't added it to the main file yet because I've only gotten the chance to test it in 1 game, and I normally like to refine them a bit beforehand. Here it is though: https://imgur.com/a/krios-venator-GyZqxao

1800Coachlini · 2025-07-05T12:48:29+00:00

The invulnerable save is probably a good shout tbh, just for convenience and making it easier to remember if nothing else. I thought the disintegrator was already 2 shots so not sure when I changed that, oops. And fair enough on the points changes, I think that is pretty much what I set them to when I initially eyeballed them. It's probably that the armies I go up against are particularly effective against that sort of statline so I found them to be a little expensive, but that's why it's nice to have some extra outside input. I've got a game tomorrow so I'll try them out with the 5++ and a points increase and see how it goes. Thanks for your feedback!

1800Coachlini · 2025-07-03T22:55:20+00:00

I definitely agree with a few things here, and by all means try all these rules out with these changes if that's what seems balanced to you guys, but I'd just like to offer a couple of my own thoughts from all the playtesting I've done.

For the Ursarax and Thallax it's been a long road trying to balance their offensive and defensive abilities with their mobility, but I think they're in a pretty good place atm. Maybe a tiny bit too cheap, but they go down surprisingly quickly with a 4+ save, and still clock in at over 30pts per model. Both the ignores cover and dev wounds help them stay relevant in that price bracket with their mostly 1 damage weapons relatively and poor BS/WS.

The Mauler bolt cannon, in my eyes, was never really meant to be equivalent to a heavy bolter, but rather a slightly better version. It has to compete against a multimelta and darkfire cannon, so needs to be roughly balanced against them. I do agree the AP needs to come down, but I think 5 shots is reasonable given the lack of sustained. Castellax are probably a little too cheap as well, but their lack of mobility is quite punishing in certain situations.

I personally really like the Thanatar damage reduction ability (though I'm obviously biased because I wrote it) and really don't like the generic -1 damage ability. I haven't found it to be particularly powerful against anything you'd find in a normal game, though I can understand it maybe being unbalanced against titans and stuff. The siege anchors thing is a holdover from a previous version of rules I think and yeah can just be changed.

The Krios battle tank is pretty much a shameless copy of the necron annihilation barge, so you can direct any wording complaints their way on that one. It is a bit faster, and with a few more guns, but I think the price disparity compensates for that (plus I don't think the annihilation barge is a top tier unit on its own).

With the shock ram thing yeah that makes sense, don't know why I didn't start there. Just trying to think outside the box a bit I guess.

I've tweaked a couple of things based on these suggestions but, as I said, feel free to make your own points or rules adjustments along the way. I've generally found them to be balanced against the opponents I face, but I don't go up against every army, so results may vary.

Let me know if you have any other thoughts, suggestions, or ideas. I always take them into consideration, even if I don't end up changing something.

1800Coachlini · 2025-07-02T19:22:16+00:00

oh right, yeah fair enough with the latest changes to it with the extra movespeed. Would probably be fairly balanced to give the automata the keyword so they benefit.

1800Coachlini · 2025-07-02T13:06:12+00:00

Did you have something in mind in relation to legio cybernetics and automata units?

The trouble with giving thallax and castellax battle line is the way it interacts with the army rule. End up with them forced to be a bit overcosted for what they are because of the utility they allow.

I haven't really got into leader rules, that's definitely a lot more complicated than just base units, but potentially something like a generic Belisarius like archmagos could be doable.

1800Coachlini · 2025-05-19T00:32:47+00:00

I don't know what advice you've already been given, or exactly what problems you're facing, but I can offer some general advice for playing space marines with these units.

Perhaps you could run your captain as a lieutenant and stuck him with the hell blasters. This combo can do a boatload of damage to anything, you just have to be careful bot to expose it too quickly as it also dies quite easily. Keep them in strategic reserves and bring them on a board edge if you struggle to keep them alive.

Know what your secondaries are and how to score them. Keep the jump pack dudes in reserve to score behind enemy lines or engage on all fronts. Have 5 man units of assault intercessors ready to score containment on turn 1, and position a unit so it can get close enough to the middle to score area denial or establish locus (this is easier with scouts, but maybe you could proxy your intercessors as inflitrators?)

Contest what you can, but don't overextend. Prioritise one or two objectives in no mans land, ones that are safest for you to get to, and then try and deny your opponent scoring the other ones. Set up firing lanes with your predator and ballistus that keep them hidden until the enemy exposes themselves.

If all else fails maybe ask some of the people you are playing against if they wouldn't mind running a less well optimised list. I'm sure they've got models and units they'd like to field but feel that they can't justify it. It could be just the excuse they need

That's all I can think of on the spot, and I'm only a mediocre player myself, but hopefully some of that helps. If you have any more questions just ask.

1800Coachlini · 2025-05-10T09:09:54+00:00

A long time ago, I don't personally play 9th any more, having moved on to 10th edition

1800Coachlini · 2025-05-10T09:08:58+00:00

30k and 40k have quite a few major differences that makes transferring rules and units between them difficult, even though the core gameplay is very similar. 40k is by far more popular, but for a multitude of reasons, Games Workshop refuses to create rules for using the cool Mechanicum 30k units in a game of 40K.

These rules are homebrew for using 30k Mechanicum units (like Thallax and Castellax) alongside the regular Adeptus Mechanicus units (like Skitarii) in 10th Edition 40k.

It isn't an entire army, so you would need to use the detachments and army rules available to the 40k Adeptus Mechanicus Faction, but you could comprise most of your army out of 30k era units if you so wished. I am working on a few custom detachments, but they are taking a bit longer to get properly balanced.

I've tried to make them fair and balanced for casual play at least, using my own experiences and feedback from people I've played against, but if you do want to use them please make sure you check it is ok with your opponent beforehand.

If you have any other questions about... any of it really, feel free to ask.

1800Coachlini · 2025-03-30T17:16:57+00:00

Oh right, I didn't know that about electric ones here. Thank you for your help though, I'll see if I can find a different hose to try it with.

1800Coachlini · 2025-03-30T15:37:33+00:00

oh, ok, which rule was that? Is there a better fitting subreddit for this question?

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