Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
A textured orange background pattern with vertical stripes.
Source V. Hartikainen
This one needs to be used in small areas; you can see it repeat.
Source Luca
Prismatic Groovy Concentric Background No Black
Source GDJ
Dark Tile-able Grunge Texture. I think this texture can be classified as grunge. It's free and seamless, as always.
Source V. Hartikainen
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
A version without colours blended together to give a different look.
Source Firkin
A classic dark tile for a bit of vintage darkness.
Source Listvetra
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
The image depicts a seamless pattern of a fishnet with a plenty of fish.It may be a lucky charm for fishermen.
Source Yamachem
To get the repeating unit, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
A dark metal plate with an embossed grid pattern and a bit of rust. Here's a dark metal plate texture for use as a tiled background on web pages.
Source V. Hartikainen
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
Retro Circles Background 4 No Black
Source GDJ
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
A nice and simple white rotated tile pattern.
Source Another One
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Prismatic Geometric Pattern Background
Source GDJ
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
Zero CC bark from fur tree tileable texture, photographed and made by me. CC0
Source Sojan Janso