Functional Spiral Staircases (Project Spiral) - v1b
🕑 Added 2022-09-27 14:31:02 +0000 UTCUpdates:
- 2023 February 1st - Updated the Radiant spiral staircase due to a texture bug for games on lower settings.
I'm sure we're not the only ones who have wanted one! This is Project Spiral, a functional spiral staircase mod that uses animations when traveling between floors and does not use the elevator teleporting system. It's also base game compatible and easy to use, and sims will use it just like EA stairs and ladders after it's placed.
These stairs are objects though and do not auto-adjust their height to match the wall height, so only the shortest wall height is currently visually supported, but sims can still use the stairs to travel to the next floor without issue. A future update will have additional stair heights to choose from for the walls. Also, you can place as many down as you'd like, and the floor cutout auto-applies and moves with the spiral staircase wherever it goes, similar to EA stairs/ladders. You can also place stairs directly above each other on each floor and sims will route with them continuously when going to higher floors!

Please note that this is (Edit: now beta) testing, there will very likely be bugs (though we've done our best to fix everything) and that not all features are added! There shouldn't be any game breaking bugs though and you should be able to safely use this in your main saves.
Installation
Download and extract the files to your main mods folder or only one folder deep, as this is a script mod. Clear your localthumbcache before loading the game, instructions here if you are unfamiliar (you should always do this whenever adding or removing mods).
To uninstall, it's recommended to remove the stairs from your save first (to be safe) and then delete the files from your folder. Clear caches as usual after.
How to Use
See the "Current Notes & Issues" down below for a list of what's not currently added, what to be aware of, and what is coming next before doing anything!
Once installed and in build mode you can either search by our names or "spiral", or "staircase", or go to the Appliances > Misc category to find the stairs and swatch of your choice, place it down where you'd like. That's it! The script and game handles the rest, even if you move it. If you delete the stairs though, you will need to delete the cutout manually. We will be looking into a way to remove the cutout after the stairs are deleted so you guys don't have to delete it yourselves.
Current Notes & Issues
- Currently only the shortest wall height is supported visually, but sims can still travel to the next floor just fine even when using the tallest wall height. We are investigating additional stairs for the other heights.
- Child to Elder have animations but Toddlers do not, and will currently teleport instead unless carried, though animations are coming later.
- Pets do not have any animations and do not teleport. Teleporting will come soon in an update, and then replaced with animations at a later date like toddlers.
- There's some very minor "snapping" on the legs of the animations when entering/exiting the stairs. We will be improving this as well.
- Deleting the spiral staircase leaves behind the cutout and the cutout needs to be deleted manually. We will be investigating a way to remove it automatically.
- EA bug (due to floor cutouts): Spiral staircases leading into basements will not show the basement in the floor cutout and instead show a white void. The glass dance floors do this too, not something that can be fixed on our end.
- EA bug (due to floor cutouts): The floor cutout may behave strangely around floors near rounded walls.
- CC Creators: Custom cutouts are currently not possible due to the way the script is made, but we are investigating solutions.
If interested, please see the FAQ post (coming soon) to learn more details about the issues in the list.
Current Stairs & Swatches:
LittleDica made the Industrial Spiral Staircase (included in the download)! The Radiant is converted from TS3, and more options and swatches will be coming at a later date as well!

CC Creators - Creating New Spiral Stairs
Simplest thing to do is clone one of our spiral stairs, then import your meshes and textures as normal, keeping the general shape of the entrance/exit in line with the rig and cutout. As noted in the current issues, custom cutouts are not currently supported, but we will be looking into solutions for stairs that need a different cutout.
Known Conflicts
None, this is a fully custom mod and should not conflict with anything.
If you have a bug to report or need help, please go to our Discord server! It's easier to troubleshoot and pass information.
Major thanks to littledica for the Industrial Spiral Staircase object mesh, as well as lot51 for major help with scripting!
Comments
saturatedspark
Has this been updated?
Karnage Wulfrick
love this mod but need these stairs for medium/tall walls! will there come an update to this sometime soon? its been so long!
puh-der-baer
It's a shame that the second staircase doesn't have a railing. It would also be nice if the railing went around the top so that no one falls into the hole.
Pancake & Mizore
Not sure if we'll do extras after it, but we have plans to add the last few from TS3 in at least. There's some from other creator's like Ingeli/Simverses you can download as well.
BlahBlah96
I Love this mod I use it in almost all of my builds, but I was wondering if there will be any different styles/mesh coming out? Thank you for the awesome mod 😁
Pancake & Mizore
The cutout auto-places itself. If it didn't, you didn't install the script correctly or don't have scripts enabled in your settings. Place it in the main mods folder or only one sub-folder deep.
Lael Ramerman
Omg this is amazing!! I do have a question though, I downloaded it, but when putting it in my game there is not cutout to actually get to the next level, how do I fix this?
Pancake & Mizore
Yes, that plan hasn't changed.
mouze
will there be medium & tall versions eventually?
Elunæ
How cool is that?
Pancake & Mizore
What do you need help with? -thepancake1
GIULIA
I can't use it, can someone help me? I can't reach the author for help :(
Pancake & Mizore
Make sure nothing is blocking the stairs and that there is enough room (don't put them down with MOO) and that the script is in the main mods folder or only one sub-folder deep. If you haven't yet, clear your localthumbcache, tutorial: https://sims4.crinrict.com/eng/2014/09/delete-cache-files/
Tobi Lei
I dont know why but its not working for me I did everything how to use it but no options I click the ground to let them go up but they cant. its not working in my case.
A Gabriela
My dream come true 🤩🤩🤩🤩🤩
A Gabriela
omgggggg omgggggggggggg
Gregg L Raven
Amazing, thanks so much for making the spiral stairs!
Pancake & Mizore
LittleDica's staircase is included in our file, no need to go to his page.
Gaming Events in the Springs
I have been waiting for spiral staircases FOREVER!! Thank you!!
Kelly Hodges
Love them! I hope you come up with more styles!
Michelle Petit
I saw this on Bojana's channel and went "TAKE ME MONEY!" I don't even play (I build for myself), but I'd like to know if I make something with a spiral staircase, that I COULD get it working as intended. Win-win!
Lawrence Smith
i clicked on littledica link for staircase but cant find it anywhere
Pancake & Mizore
Please read the FAQ/current issues section as instructed! Pets are not currently supported. Teleporters are being added next as a placeholder so pets can at least use them if no other options exist on the lot, then hopefully animations at a later date.
heidi schmidt
Love this, but my cats wont use it
The Nardcast
the alpha version is legit!
Cher151
I love this. Spiral Staircases are awesome. It looks very nice.
twstedtaurus
BIG yes to this! I can't wait to try it out!
Stevi Hjertstedt
Yes! Brilliant! Bravo!