Not all buildings are worth leveling. Here's the optimal upgrade order to grow fast without wasting resources.
Always prioritize
Command Center: — unlocks everything else.Barracks: and march-related buildings — more troops and bigger marches.Research Lab: — tech compounds over the whole account.Build in bursts
Save speedups for building events to double-dip on rewards.Upgrade resource buildings only when idle (they pay back slowly).Hospital size matters before war phase — don't neglect it.What to skip early
Cosmetic and vanity upgrades.Over-leveling resource buildings before you have the marches to protect them.> Pro tip: Time your Command Center upgrades with speedup events to get the best return.