I made a graphics mod for an indie game Cup of Ethanol, which is fun enough, but uses programmer art. For some reasons, it uses 25x25 tile grid - and one of the objects is a giant-ass 100 pixel wide block of concrete. So I did what I could with the concept, added dithering for texture, and cracks that show rebar below. I kinda like the perspective on the rebar to be fair.

I will post all tiles later, both in 25x and newly remade 32x version, and I will release them into open source on OpenGameArt.