Alchemy Factory How to Delete Walls: Quick and Bulk

Deleting a wall in Alchemy Factory is a two-part answer: hold the right mouse button for a single piece, then switch to bulk delete or box selection when a whole run has to come down. The part that catches players is not the gesture but the support rule underneath it.

The Quick Delete: Hold Right Click

The patch notes list hold right click as the quick action for deleting items. That one binding covers the whole buildable set - walls, floors, belts, machines - so there is no separate wall tool to switch to.

The practical consequence is that the delete gesture is always available while a build tool is selected, which is useful when a wall run is being trimmed in place. It is also the reason a misplaced click can remove something that was meant to stay, so the same notes pair the delete binding with a copy binding on the middle mouse button.

Bulk Delete Mode and Box Selection

Bulk delete mode is where a large structural change becomes practical. The patch notes record that in bulk delete mode, pressing G also selects all connected pipes, and that box selection was added for the batch delete and copy modes.

Both additions point at the same layout problem: walls in this game are rarely empty. A wall line carries pipe runs, and clearing the wall while leaving the pipes creates a tangle that has to be found and removed one length at a time. Selecting the connected pipes with the wall turns that into one deletion.

The Support Rule for Walls and Floors

The developer FAQ states the rule plainly: upper floors require wall support, and removing supporting walls also removes the connected floors and walls above.

That makes wall deletion a structural decision rather than a cosmetic one. When a wall on the ground floor is holding a floor plate that carries machines, the delete action takes the plate and everything above it as well, so the sequence matters: move the machines off the upper floor first, then clear the wall run from the top down rather than the bottom up.

Pillars are the alternative when the wall itself is the problem. The patch notes describe a steel-reinforced pillar that provides building support and unlocks through the building tool, which lets a room lose a wall while keeping the floor above it standing.

Small Modules and Placement After the Patches

The same patch line that added a box selection feature also added quarter-size floor modules and half-size wall modules. Smaller modules change the scale of a delete: a half wall can come down without the whole panel following, which separates adjusting a room from rebuilding it.

Placement bugs around the shop entrance have also been fixed. One patch note records that walls could not be built next to the shop entrance, which means the entrance edge now behaves like any other wall line for both building and deleting.