Build ur Base Circus Chapter update adds new turrets, blocks, and a limited-time event

Build ur Base released a Circus Chapter update, introducing new turrets, blocks, a limited-time event, and ghost enemies. The update adds Chapter 4, themed around a circus and Halloween, featuring clown enemies and invisible ghost enemies that require special turrets. A limited-time Subspace event offers rewards for completing wave milestones and missions. Players can acquire new turrets and blocks during the event, and the Subspace event allows rerolling limited-stock rewards using keys earned from missions.