Background pattern 323 (colour 3) #1810
Yellow CC 0Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
More Textures
Double Lined@2X #52
Stripes CC BY-SA 3.0Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
Wide Rectangles #699
Wall CC BY-SA 3.0Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
Background pattern 328 (colour 3) #1799
Noise CC 0To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
Seamless Blue On Yellow Background #1160
Grid CC BY-SA 3.0This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
"Black Chains", Gloomy Background #1082
Metal CC BY-SA 3.0A repeating gloomy background image. This one consists of a pattern of black chains layered on top of a dark textured background.
Source V. Hartikainen
Arrows pattern #1722
Noise CC 0Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
Patterned metal plate 7 #2556
Metal CC 0From an image on opengameart.org shared by rubberduck.
Source Firkin
Yellow Wood Planks Background #876
Wood CC BY-SA 3.0This background pattern contains a texture of yellow wood planks. I think it looks quite original.
Source V. Hartikainen
Dark Mosaic@2X #122
Dark CC BY-SA 3.0Small dots with minor circles spread across to form a nice mosaic.
Source John Burks