Greetings.
I’d like to offer you a small selection of pure-ASCII tilesets, for use in Cataclysm.
These tilesets aim to recreate the look of “console” Cataclysm, but with some of the bells and whistles that come with graphics tiles.
Like being square.
They pretty much leave no unassigned tiles, hopefully, at least for vanilla Cataclysm. Mods are a different matter.
They are not made by me, technically. They are mostly a showcase of the capabilities of Chase’s Tileset Editor, the latest unreleased version, and were generated mostly from tilesets I lifted from the multitude available for Dwarf Fortress.
Feel free to use these as the basis for any tileset you might want to make yourself.
Or, if you’re like me and appreciate good ASCII graphics too, feel free to play with them. 
[hr]HRose’s 10x10 Tileset:
I don’t know whether HRose made those tiles, or found them somewhere, but his(her?) ASCII/Retro tileset pretty much sparked this whole thing. It’s a crisp set with fairly small tiles, nice and good looking.
Download
[hr]New! HRose’s 10x10 Tileset modified by Sean Mirrsen:
A stupidly minor modification that I find at least partially eye-pleasing, this is a version of the 10x10 HRose’s tileset with slightly smoothed wall corners.
Download
[hr]New! Cheepicus’s 12x12 Tileset:
An alternative to Herrbdog’s somewhat dark set in the 12x12 size, this set is reasonably nice to look at and easy to read.
Download
[hr]Herrbdog’s 12x12 Tileset:
This is my favorite tileset for playing Dwarf Fortress. It’s a little darker than normal, but the 3D-ish shading makes it look interesting. For Cataclysm, it’s also quite serviceable, and with the recent zoom function it retains good legibility on the zoomed-out view.
Download
[hr]Herrbdog’s 12x12 Tileset, modified by Sean Mirrsen:
A curious recent addition to Tileset Editor allowed me to craft this interesting variant of Herrbdog’s tileset, that uses a colored outline instead of a full-tile fill to display background color. The result looks a little cleaner, though with the size of most tiles the effect is almost unnoticeable.
Download
[hr]New! Zaratustra’s 16x16 Tileset:
Since Zara’s 8x8 tiles mysteriously stopped working for me, I decided to get one of his/her larger tilesets up. This one was particularly useful to me when I was playing the game on my FullHD 11-inch tablet - the font size is juuust right.
Download
[hr]New! HRose’s 10x10 set, upscaled to 20x20:
Rounding up the additions with something in generously oversized, this set is suprisingly good to look at at normal zoom and screen size, and allows using the zoom function to see more of the area, as long as your PC can take the performance hit.
Download
[hr]
I removed the 8x8 Zara set because it mysteriously stopped working, but I don’t think anyone here actually has screens that low-res. Anyways, these sets should - finally - actually cover all the standard tiles, and look more or less SDL-like. There were a few fairly stupid issues in places, because of how random Cata’s standards for Json definitions are, but I think I squashed them all and got a few tilesets you people can use freely out of it.
But seriously, great job. Looking forward to it.
[/spoiler][spoiler=HRose’s 10x10 Tileset]