[Google Document]:
Roblox - Classic Building Guide - Google Docs
[Classic Building Guide Update] - 1/29/25:
As the month is coming to the end, the classic building guide is no longer maintained as I’m satisfied with it. 
There’s also sometimes the rule of “cohesions”. You’ll need to have surfaces set correctly to be properly placed if you’re going that way back in style(and for the extra bonus touch). Each legacy surface has different ways of welding themselves to places, like studs to inlets. They do not always appear for the appearance only.
You may emulate them with custom textures, or use the legacy surface system that is currently hidden.
Love the plugin concept, it’s functioning but filling my output with an error each time MouseDrag is triggered.
Ensure the parts are named “Brick,” “Symmetric,” or “Plate.” The plugin has been updated, so it will default to “Symmetric” if the FormFactor property name on the part is not specified.
what about rotated parts? can their orientation be set freely?
Only snap to 90 degrees, anything else is outside of the original style.
@evilmen8
As long the part rotation adheres to hinge surface logic and hitting other parts, I think it should be fine to have varying degrees of rotation, as shown in this image.
thank u for posting this. i’ve been looking for a guide like this for ages! whenever i tried building in the classic style it never looked quite right… literal godsend 
It’s frustrating to see low-effort games try to replicate classic art style and fall short, which is why I mostly created the guide, lol. For me, what matters most is the color scheme (lighting/part colors) and capturing the LEGO atmosphere from back in the day.
Good topic ,i thought this is better to build JTOH’s
Updated the guide to for a bit. If there’s anything I’m missing in the OP, let me know in the replies.
Why do you have to upload the plugin on your alt account and not your main account
Privacy concerns. Check the plugin’s source code if you think it’s malicious.
snip due to time constraint, unfortunately
Hey, i was wondering, I’ve been working on a alternate version of the crossroads, does .25 - .75 studs (i usually only go as far as .5 studs.)
I utilize this pack and made some extra MaterialVariants that align within that stud ratio, would it still count as a classic build?
Like this? It sounds more like the modern iterations of front page games that do that kind of thing.
Unfortunately, I don’t consider it a classic styled build. You can refer to FormFactor section in the OP.
These part sizes incrementally increase along their X/Z axis by 1 stud, while the Y-axis also grows in size incrementally. The specific size on the Y-axis is determined by the FormFactor property: Brick (1.2 stud), Symmetric (1 stud), and Plate (0.4 stud). We’ll be excluding Custom.
Feel free to post your stuff here though, lol
i’d thought so lol, alright then, luckily i’ve avoided studs being off-centered like that, thanks for letting me know. (since i usually like my builds symmetrical or aligned correctly.)
although it probably dosen’t matter what part’s position is, i usually align it with the part’s size
It’s a bit difficult to understand this post, but I’ll try to answer.
If you’re using Brick or Symmetry parts (refer to FormFactor section), it should align with the grid layout (the studs).
snip
Sorry if there was any confusion with my last reply, it’s kinda hard to explain without showing the map itself (it’s almost finished and i’ll be open-sourcing it when it is.)
But alright then, i think i’ve avoided aligning plate parts like that, but basically i’ve just been trying to avoid z-fighting.
I currently size my parts to around [.25 | .5 | .75 | 1], or in between that range.
With my future classic builds though, i’ll try to follow the guide more closely, as right now, i’ve basically just taken the original crossroads map and have been trying to align everything to the grid layout.
