These look intriguing but I don't understand what they are. Are they foundation walls?

Note that the link to the fenced version actually points back to this thread.

I don't understand what they are either, or how they're used. A little more explanation please?

I believe that the correct link is:
http://www.modthesims.info/download.php?t=313232

They are ground slope hiders. They make a sloped ground tile look like a vertical wall with a flat tile on top. Take a look at the link above for instructions.

Thanks for these. It's really nice to have a low-poly solution.

Ah, now I understand! That's a great idea.

Thanks for this amazing sharing!

Oh WOW!!! I use these all the time! Now they're even better :-D
Thank you! Thank you! Thank you!

Didn't I mention something about spoiling me us last week? Well, you are!

I fixed the link in the post

These look very interesting! These make me want to try building houses on sloped lots more, since now they can have these beautiful walls! Thank you!

I had previously downloaded the other version (long ago) but also couldn't quite understand how they worked. This version looks very interesting for a particular use: for many years I've been trying to build a special swimming-pool that should project inside a house by being constructed over basement on a house that has no basement. Problem is that is not possible (without trick-tricks) to remove one of the walls of the basement and replace by a normal wall. This post seems promising. Do you think that it is possible to create something partially transparent to cause such effect? I mean to make the swimming-pool to look like a swimmable aquarium projected on one of the walls of a non-basement house. If I'm too confused I can try to create something to illustrate my problem. Thanks and thanks for the new ideas.

The main purpose I created the walls was to hide the ground slope. It may have other uses but, sorry, I've never used it for what you suggest. I doubt they would extend below the pool water. I have used them to extend below pond water, if that's any help. There are a few tutorials explaining how to extend a pool into your house. Have you checked them out?

Yes, long ago, but it required tricks that you cannot modify the house later without consequences. I was just hoping to find something that simply closed the gap with transparence. I have some ideas to do this, but I'm not the best mesh maker in the world and need a basis to work on. Anyway thanks, it will come handy for other purposes.

Awesome ! I often use the fenced version. to xptl297 : I fear that unfortunately the 1 tile gap for swimming pools you mean can't be filled with anything.

Love the other set, particularly the ground pieces, and use them all the time for daylight basements, safe rooms, etc.

I use the original set all the time, they're fabulous and I couldn't believe I'd lasted so long without soemthing like that!

So are these new ones simply a lower poly version? Is that the only difference? (I get that they're without the fence part!)... I guess my question is, is there any reason to keep the old ones if I'm not bothrered about the actual fence part?

Anyway, thanks so much for your work!

limabean1981 - They serve the same purpose but work slightly different (there's only one piece). I use them all the time because I, too, found I wasn't using the fences, anyways.

lovely, thanks so much!!

This changes everything! I'm off to redecorate all my houses like right now. Thank you so much!

A blessing to fixing the "sloped" look that happens to the ground when trying to make a basement.Thank you for making this one.

brilliant idea, thanks very much!! I always hated that unsightly slope that's left when I want to build basement apartments or whatever and this will disguise it perfectly, cheers :)

These are a nice way to finish out a house on a slope. Thank you!

A belated thanks.

Thank you so much for this. After years and years of playing mainly without any kind of extra mods besides just clothing, hair, paint, flooring, I've decided to try experimenting with more complicated multi-level houses with slopes making things look a little wonky. So this is perfect for helping me fix that. <3