This collection of flats, textures intended for floors and ceiling, is named and ordered by the logic i'm using in my project, might not make sense, however i'll add a GIF file, and try to explain the sequence, this list represents wild terrain, cultivated terrain, roads and paving, interior floors of several themed planets, desert such as Arrakis or SEGA's version of it Lillipa (i'm mentioning the first coming to my mind) wild planet, with wooden cabins and such, arctic planet, with 2 floors made of pelt and furs, intricate tiles, naval panels, snow, sand, grass... I'm confident that since modern editing tools allow to have the preview, naming and explaining the intended destination for each of them is superfluous, if it's green and chaotic is grass, if it's green and combed is a carpet and so on... Inviting you to check the previews is much faster than describing the list.

In most editing envirovment you can use them as wall as well. scale them down and create transitions for RPG is something i don't intend to do in foreseeable future, however you can modify them however you see fit.