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Build Ur Base Circus Chapter 4 Guide: New Blocks, Defenses & Features


Screenshot by Mickey

Roblox’s Build Ur Base has unleashed its vibrant Chapter 4: Circus update, transforming battlegrounds into ethereal carnivals teeming with spectral clowns and temporary Subspace rifts. This overhaul introduces festival-themed fortifications and spectral adversaries, with event-specific rewards for dedicated defenders.

Beginning the Carnival Onslaught

Chapter select in Build Ur base
Screenshot by Mickey

Trigger the carnival invasion by surviving through 500 standard waves to unlock the special map. This nightmare carnival features phased escalation systems – spectral foes materialize mid-battle, requiring event-specific artillery for detection and elimination.

Carnival Loot Containers

Crate Name Rarity Price (in Cash)
Shadow Crate Mythic 10M
Circus Tent Crate Legendary 5M
Circus Crate Rare 2.5M

Carnival Defensive Systems

Circus update in Build Ur base
Screenshot by Mickey
Turret Name Rarity Price (in Cash)
Circus Plasma Turret Mythic 40M
Circus Minigun Legendary 20M
Double Circus Cannon Epic 10M
Circus Cannon Rare 5M
Circus Turret Uncommon 1M

The mythic-grade plasma variant dominates crowds with area denial capabilities, while dual-barreled artillery proves devastating against concentrated assaults.

Architectural Enhancements

Block Name Rarity Price(in Cash)
Circus Block Mythic 12M
Pumpkin Block Epic 5M
Barrel Block Rare 2M

Ornamental Additions

Decoration Rarity Price (in Cash)
Circus Laser Door Mythic 24M
Circus Window Mythic 12M
Circus Wedge Mythic 12M
Circus Stair Mythic 12M
Pumpkin Laser Door Epic 5M
Pumpkin Window Epic 5M
Pumpkin Stair Epic 5M
Pumpkin Wedge Epic 5M

Subspace Rift Challenges

Subspace Reward Description
Subspace Block A glowing defense block exclusive to the Subspace event.
Subspace Sword A melee weapon infused with plasma energy.
Subspace Railgun Long-range energy weapon capable of piercing multiple enemies.
Subspace Plasma High-energy weapon material that powers energy turrets.
Subspace Crystal Special crafting material used for futuristic items.

Common Inquiries

Event Duration Queries

The carnival environment remains permanently accessible, though time-limited rewards vanish post-event. Prepare defenses accordingly.

Specter Combat Tactics

Phantom opponents necessitate specialized detection systems – prioritize equipping event artillery with spectral analysis capabilities.