BASE DESIGN
Leave room to expand a factory later
Plan enough space and sensible material routes for later unlocks before you fill a new factory site with the machines available today.
- READ TIME
- 4 min
- UPDATED
- 2026-07-24
- GAME VERSION
- Update 1 · hotfix 0.2.8
This is useful when
You are starting a factory that will need more machines, more recipes, or another production step as you progress.
What to do
Sketch the largest version you expect to build, reserve its main routes and machine pads, then install the part you can use now.
What to expect
The factory will have empty areas for a while, and the first useful output may take longer to set up.
Check again when
A temporary unlock line does not need a permanent layout. Change the plan if a new recipe needs different resources than you expected.
Decide what the finished site will make
Before placing the first machine, list the finished items the site should make when it is complete. Then list the materials that must arrive from somewhere else. You do not need to know every rail turn yet. You do need to know which side receives inputs, where finished products leave, and roughly how much room each major production block will need.
Use the Production Calculator to check the recipes and machine counts for the output rate you expect later. If a machine is still locked, include its pad in the layout anyway. Mark that area so an early production line does not drift into it.
This does not mean every factory must be built for the end of the game. Pick one future build you expect to make, such as the next few Corporation levels or a known V2 unlock, and reserve space for that.
Put early production steps near their materials
Start with ore extraction and other basic inputs. High-volume processing is usually easiest to keep near those sources, especially when the first recipe reduces the amount that must travel farther into the site. Place later machines in the direction the materials need to move.
A left-to-right layout is helpful when the land allows it, but it is not a rule. The important part is that simple materials do not have to cross finished-product lines or travel backward through the factory. On an uneven site, several short production rows can feed one later assembly area.
Keep rails simple enough that you can say what each one carries. Shared rails are fine when their combined sustained rates fit. Leave the route for a future machine before surrounding it with storage and power equipment.
Mark the space you are saving for later
An empty patch only helps if you know what belongs there. Reserve space in machine-sized groups and keep an access path around them. A short disconnected rail or a row of foundation edges can show where the future block begins and ends.
A larger group of machines may need more input storage, another rail split, room for heat and power equipment, or a wider path for construction. You do not need to fill those spaces immediately, but packing machines edge to edge makes every later change harder.
Where the final machine count is uncertain, reserve a complete extra row instead of scattering several small holes. A clean unused row is easy to find and easy to wire when the time comes.
Keep temporary production separate
Sometimes you only need a few machines to unlock a recipe or finish one delivery. Put that temporary line where it can be removed without cutting through a permanent rail. Feed it from a depot used only for that line, or from a short branch, rather than making it part of the main route.
If a temporary line becomes useful enough to keep, give it a proper place in the plan before other factories begin depending on it. That is the point to calculate its sustained inputs, reserve its full size, and decide whether it belongs at the current site.
You may still rebuild after an update or a new discovery. Reserving a pad now keeps a known locked machine from being blocked by the line you are building today.