This high quality terrain has been purpose tuned for building levels in game-guru. Unfortunately there is some minor stretching so it does require some playing around with the heights of the panels involved when doing vertical walls. This is a result of the way the engine attempts to override the texture.
The textures included:
Default - Black circuitry underlayment
1 - Faded metal tiles with blue X shape in them
2 - Brushed aluminum tiles.
3 - Grittier brushed aluminum tiles with a zig-zag (slightly blue)
4 - Old broken pipe material, degraded metal.
Attribution: All art was public domain, moderately modified, and included in this texture. No attribution required. Falls under creative commons 1 (NO COPYRIGHT). Art was then modified and tweaked.