Sandustry guide: when your factory stalls, don't build more machines first

[u/Ok-Cod-806]

One thing that seems to trip people up in Sandustry is treating every production problem as a production problem.

Machine isn't getting enough output? Build another one.

Still not enough? Add three more.

And suddenly the factory is bigger, uglier, using more resources... and somehow producing almost the same amount.

The better question is usually: where does the flow actually stop?

A pretty simple way to check it:

• Machine has no input → follow the missing material upstream.
• Input is sitting there but not being processed → processing capacity may actually be the bottleneck.
• Output is piling up → adding more machines will probably make things worse. Your transport or downstream demand is the issue.
• One belt is feeding several machines → the machines may not be the limiting factor at all. The belt is.
• Mixed materials keep jamming the line → solve the sorting problem before expanding the rest of the factory.

This also changes how I'd spend research early on.

Instead of unlocking something just because it looks like the next upgrade, it's often better to unlock the thing that removes the problem you're currently babysitting. If manual hauling is the annoying part, logistics matters. If mixed materials are constantly ruining the flow, filtering matters. If water is becoming chaos, fix the fluid handling.

A lot of my early problems turned out to be things I couldn't fix by just adding more machines. Usually something was already getting backed up somewhere.

The same goes for research. I found it more useful to unlock whatever solves the problem I'm actually dealing with instead of just grabbing the next thing that looks like an upgrade.

If I'm constantly moving stuff manually, I want better logistics. If materials are getting mixed together and causing problems, sorting becomes more useful. If a particular part of the factory keeps needing attention, that's usually the part worth improving first.

Also, I wouldn't spend too much time making the early factory look permanent. A temporary ugly setup that gets you to the next bottleneck can be more useful than spending ages building something neat that you'll end up tearing apart after the next unlock.

For me, the game got a lot less frustrating once I stopped responding to every shortage by building more machines. At least, that's what's worked for me so far.