Mechanically, Factorio runs on a grid system, and walls are definitely tied pretty firmly to that, with damage to a wall applying only to a specific grid square. Round walls would have to be larger, and thus apply to multiple grid squares, and I'm pretty sure that would end up being a nightmare to t...

Type: Mod Name: Concrete Walls Description: Adds an alternate recipe for walls using concrete License: CC BY-NC 4.0 ->http://creativecommons.org/licenses/by-nc/4.0/ Version: 1.0.0 Release: 2016-03-29 Tested-With-Factorio-Version: 0.12.0 Category: Item Tags: Walls, Concrete Download-Url: Concrete-Wal...

Just chiming in with another "thank you." I've burned a whole lot of hours on this, and now I'm getting into modding something for the first time ever, just because this game is so bloody cool.