The Circus Chapter 4 update in Build Ur Base adds a festive yet spooky twist to Roblox’s popular tower defense builder. The map now transforms into a glowing carnival filled with haunted tents, clown enemies, and a brand-new Subspace event. So, to help you get all the rewards, this guide covers everything you need to know about the new Circus Chapter, including how to start the event, every new block, crate, turret, and decoration, as well as how to complete the Subspace limited-time event for exclusive rewards.
How To Start Circus Chapter 4 in Build Ur Base
To begin the Circus Chapter, you need to first enter the main play area and clear Wave 500 to trigger the chapter cutscene. The map will load into a carnival-themed world with circus tents and clown enemies.
When you press Fight, the event officially begins, spawning waves of clown-based enemies that increase in strength each round. As you progress through the waves, Ghost Enemies will start to appear.
These special enemies are invisible unless revealed using certain event-exclusive turrets. They serve as mini-bosses for the Halloween update and reward more money when defeated. You can earn Circus Crates and event items by surviving wave milestones.
All Crates in Build Ur Base Circus Chapter
Crates in the Circus Chapter contain themed rewards such as weapons, blocks, and event gear. They can be purchased with in-game money, and each tier has better rewards than the previous.
| Crate Name | Rarity | Price (in Cash) |
|---|---|---|
| Circus Crate | Rare | 2.5M |
| Circus Tent Crate | Legendary | 5M |
| Shadow Crate | Mythic | 10M |
All Turrets in Build Ur Base Circus Chapter
Turrets are the backbone of your base defense. The new Circus-themed turrets have high firepower and unique effects, so below we've mentioned all the turrets you can unlock in Chapter 4:
| Turret Name | Rarity | Price (in Cash) |
|---|---|---|
| Circus Turret | Uncommon | 1M |
| Circus Cannon | Rare | 5M |
| Double Circus Cannon | Epic | 10M |
| Circus Minigun | Legendary | 20M |
| Circus Plasma Turret | Mythic | 40M |
The Circus Plasma Turret is the strongest of the bunch, capable of damaging multiple enemies at once with plasma bursts. The Double Circus Cannon excels against boss waves, while the Circus Minigun provides rapid-fire support for mid-game defense.
All Blocks in Build Ur Base Circus Chapter
The new event blocks are both durable and visually themed for the Circus update. Below, we've mentioned all the Circus update blocks in Build Ur Base:
| Block Name | Rarity | Price(in Cash) |
|---|---|---|
| Barrel Block | Rare | 2M |
| Pumpkin Block | Epic | 5M |
| Circus Block | Mythic | 12M |
Pumpkin Blocks are particularly useful for Halloween builds due to their toughness and aesthetic, while Circus Blocks provide the highest durability and style rating.
All Decorations in Build Ur Base Circus Chapter
| Decoration | Rarity | Price (in Cash) |
|---|---|---|
| Pumpkin Wedge | Epic | 5M |
| Pumpkin Stair | Epic | 5M |
| Pumpkin Window | Epic | 5M |
| Pumpkin Laser Door | Epic | 5M |
| Circus Stair | Mythic | 12M |
| Circus Wedge | Mythic | 12M |
| Circus Window | Mythic | 12M |
| Circus Laser Door | Mythic | 24M |
Circus Laser Doors act as both barriers and traps, combining high durability with offensive potential against approaching enemies.
Complete Subspace Event Guide
The Subspace Event is a limited-time Halloween challenge added alongside Circus Chapter 4. It rewards exclusive Subspace weapons and items that can only be obtained during this event. You can access the event from the Event Menu, where you’ll find missions such as surviving specific waves, defeating ghost enemies, or building certain structures.
Completing missions gives you Subspace Keys, which can be used to spin for event rewards. All rewards in this event are limited stock, meaning once they’re claimed, they won’t be available again until a future rerun.
| Subspace Reward | Description |
|---|---|
| Subspace Crystal | Special crafting material used for futuristic items. |
| Subspace Plasma | High-energy weapon material that powers energy turrets. |
| Subspace Railgun | Long-range energy weapon capable of piercing multiple enemies. |
| Subspace Sword | A melee weapon infused with plasma energy. |
| Subspace Block | A glowing defense block exclusive to the Subspace event. |
To progress efficiently, prioritize missions that reward keys early and check your mission tracker regularly. Unlocking all five Subspace items before the event ends ensures you have the rarest gear available in the game.
Frequently Asked Questions (FAQs)
The Circus Chapter is the game’s fourth major update, featuring clown enemies, ghost waves, and a circus-themed world filled with new turrets, blocks, and decorations.
Yes, the map and its base items remain, but Subspace missions and certain Mythic rewards become unavailable once the event concludes.
Ghost Enemies are invisible mobs that appear after certain wave milestones. Only specific event turrets can detect and damage them.
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Sudhanyo Chatterjee has nearly six years of writing experience, with four focused on the gaming industry. He specializes in RPGs, strategy games, and mobile game guides. His favorite titles include the Diablo series and strategy staples like Total War and Age of Empires.