Cash first
The first two droppers are the clean early target because they make every later water trip more valuable. Buying comfort too early slows the factory.
- First droppers before far exploration.
- Farm after early cash is stable.
- Do not spend for style before income.
Route upgrades
Bucket and crystal upgrades change where you can go and how much each trip brings back. Buy them when route distance becomes the bottleneck.
- Bucket for hauling more.
- Crystal for colder access.
- Both matter before long source trips.
Efficiency upgrades
Coolant-style upgrades are strongest when the factory drains water faster than you can comfortably supply it. They turn water trips into profit instead of emergency chores.
- Use coolant when machines feel thirsty.
- Reduce water pressure before badge pushes.
- Keep production readable.