Field Notes ·
Field Notes: a long upgrade roadmap, levels 1–15
Plan in stages: establish a working chain, balance its throughput and keep room for later upgrades.

Treat levels 1–15 as a long planning horizon rather than a race to spend every resource. This is a planning guide, not a list of guaranteed unlocks; check each upgrade requirement and effect in the game before committing.
Levels 1–5: establish the loop
Learn where each input comes from and where each output goes. Build a stable production loop and keep enough resources to correct a shortage. Read an upgrade description before assuming that a higher level solves every problem.
Levels 6–10: balance the chain
Review the slowest stage after every major improvement. Compare the cost of the next level with its effect on useful output, and avoid leaving supporting modules far behind. Save toward connected improvements instead of exhausting the reserve on one machine.
Levels 11–15: plan for the long run
Set a concrete next target, check prerequisites and build reserves before committing. Revisit older bottlenecks as the factory changes. Progress comes from decisions and production; this roadmap does not promise earnings, withdrawals or paid rewards.