Boost builder activity x 4 for 100 Gems.
Upgrade builders to increase speed.
Level 2 = 1000 Gems Level 3 = 2000 Gems and so on.
Multiple builder upgrade to decrease time.
100 Gems each.
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Boost builder activity x 4 for 100 Gems.
Upgrade builders to increase speed.
Level 2 = 1000 Gems Level 3 = 2000 Gems and so on.
Multiple builder upgrade to decrease time.
100 Gems each.