Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
Prismatic Triangular Seamless Pattern III With Background
Source GDJ
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
A brown seamless wood texture in a form of stripe pattern. The result has turned out pretty well, in my opinion.
Source V. Hartikainen
A classic dark tile for a bit of vintage darkness.
Source Listvetra
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
Colour version of the original pattern.
Source Firkin
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
A background pattern with green vertical stripes. A new striped background pattern. This time a green one.
Source V. Hartikainen
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
A seamlessly tile-able grunge background image.
Source V. Hartikainen
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Prismatic Abstract Geometric Background 4
Source GDJ
He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
This one needs to be used in small areas; you can see it repeat.
Source Luca
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Zero CC tileable seed texture, edited by me to be seamless from a Pixabay image. CC0
Source Sojan Janso
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward