What are the B.O.B requirements?

Reach Builder Hall 9, complete three Home Village gear-ups, reach level 18 with any Builder Base troop and level 9 with any Builder Base defense, and reach 45 combined Builder Base hero levels.

Do I need Cannon Cart or Mega Tesla specifically?

No. The documented B.O.B requirements allow any qualifying Builder Base troop and defense. This checklist does not use the older O.T.T.O-specific requirements.

Does this show an unlock date?

No. This manual checklist compares completed levels with the requirements. It does not model prerequisite costs, builder scheduling or farming speed.

YOUR SIXTH BUILDER

B.O.B Readiness Checklist

Find out what is left to unlock your sixth builder.

Your Builder Base progress

Choose what you know. Leave the rest as Unknown.

LIVE READINESS

Your requirements

0 of 5 met · 5 to check

Reach Builder Hall 9Unknown
Complete all three distinct Home Village gear-upsUnknown
Reach level 18 with any Builder Base troopUnknown
Reach level 9 with any Builder Base defenseUnknown
Reach 45 combined Builder Base hero levelsUnknown

Based on Supercell’s B.O.B requirements. Reviewed 2026-09-19. Manual check. Not saved to your account.

Worked example

See the calculation before using your own data

Example input: Illustrative input: Builder Hall 9, two completed gear-ups, a level-18 troop, a level-9 defense, Battle Machine level 25 and Battle Copter level 15.

Example result: Three of five checks are met. One distinct gear-up and five combined hero levels remain, because 25 plus 15 equals 40 against a target of 45.

How to read it: The player can review the outstanding gear-up and hero levels in game. Either hero can contribute to the combined-level requirement; this is not a fastest-upgrade recommendation.

Boundary: Manually entered progress does not verify an account or an unlock. The checklist does not estimate dates, count active upgrade targets, or assume unknown progress is zero.