From an image on opengameart.org shared by rubberduck.
Source Firkin
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
The image is a seamless pattern which is derived from a vine .Consequently, the vine got like dots via vectorization.The original vine is here:jp.pinterest.com/pin/500744052301410188/
Source Yamachem
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Not the Rebel alliance, but a dark textured pattern.
Source Hendrik Lammers
This is a seamless pattern of regular hexagon which has a honeycomb structure.
Source Yamachem
The image is a remix of "edo pattern-samekomon".I changed the color of dots from black to white and added BG in light-yellow.
Source Yamachem
A version without colours blended together to give a different look.
Source Firkin
The image depicts a seamless pattern of a snow crystal.I referred to a book called ”sekka-zusetsu” or "雪華図説" which means an illustrated explanation about snow crystals.This book was published in 1832 (天保3年) or Edo period.For more about "雪華図説",see here:dl.ndl.go.jp/info:ndljp/pid/2536975
Source Yamachem
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
This yellow background consists of a pattern of glossy gold buttons arranged in polka dot style on a seamless texture. Here's a pale yellow background pattern. Feel free to use it for your needs!
Source V. Hartikainen
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen