Guide
Builder Hall 9 B.O.B Checklist
Builder Hall 9 is often where B.O.B becomes the main objective. The sixth builder is valuable enough for the Home Village that random Builder Base upgrades should take a back seat to the exact requirements.
A checklist approach prevents wasted builder time and helps decide which upgrades are truly part of the path.
Checklist mindset
- Write down every requirement and mark progress after each upgrade.
- Prioritize required hero, troop, and building milestones.
- Keep offense strong enough to keep rewards flowing.
- Delay cosmetic or low-impact upgrades until B.O.B progress is secure.
Avoid random defense spending
Defenses help with trophies, but not every defense helps the B.O.B path. If a defense upgrade does not support your next requirement or reward stability, it may be better saved for later.
Keep a fallback upgrade ready
Builder Base resources can arrive unevenly. Keep one smaller required or useful upgrade available so the builder does not idle while waiting for a major hero or building upgrade.
FAQ
Should I rush to Builder Hall 9 for B.O.B?
Rushing with a purpose can work, but you still need enough offense and required upgrades to make the push realistic.
What is the worst B.O.B mistake?
Spending weeks on unrelated upgrades while the actual B.O.B requirements barely move.
Related planning resources
Keep the guide connected to the tools and nearby topics so each planning decision has a next step.