Why the laboratory is usually your bottleneck

You can have 6 builders but only 1 laboratory. That single fact explains why so many maxed-looking villages still have years of research left.

The numbers

At Town Hall 18, troops, spells and siege machines add up to about 2,476 days of research from level 1. Hero upgrades total 1,789 days, but they spread over several builders.

How to plan the lab

• Longest first while you're online less: queue multi-day upgrades before busy weeks.
• Short ones when you play a lot: you'll be there to start the next one.
• Upgrade what you attack with: your main army and spells first; rarely used troops last.
• Lab Assistant every day, and potions on the longest upgrades.

See every troop's total research time in the troop table and every spell in the spell table.

Frequently asked questions