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Sandbox Only Content

Whistle was previously removed from the game on the 12th of June 2026 as it was part of the Backyard Legends Event, though it has been made available through the Sandbox mode.
It is not accessible anywhere else in the game, aside from in Sandbox Mode. This page will attempt to include information about both the version before removal and its re-added version.

Hey, don't let that whistle guy get to you now.
―Isaak on Wave 5 (Competition Court)

Description

The Whistle was a high health enemy from the Backyard Legends Event. It has high health, higher than all of the enemies that appeared before it, while being barely slower than the Boombox. It also has 30% Defense.

Appearance

The Whistle is a humanoid whistle. It has a grey metal body and a giant whistle for its head. It wears a blue and black shirt with the Adidas logo on it, black and white pants, and grey shoes. It holds a yellow and red card in its hands.

Event Strategy

As this enemy only appears through Sandbox mode, no strategy section is made for its current version. Instead, a strategy section for the one that appeared without Sandbox mode in Backyard Legends Event is listed instead.

Corpse Variants

Promotional Videos

Miscellaneous

Trivia

Update History

  • 22 May 2026 - v1.91.0
    • Whistle added.
    • Bug: Whistle's Logbook description is completely empty.
  • 5 June 2026 - v2.0.0
    • Bugfix: Logbook description has been corrected to no description available.
  • 12 June 2026 - v2.0.9
    • Whistle removed from the main game, now appears exclusively in Sandbox mode.


Backyard Beginnings (Backyard Legends Event)
(22 May 2026 – Present)
Previous Debut Current Debut Next Debut
Boombox
Wave 3
Whistle
Wave 4
Soccer Head
Wave 6
Competition Court (Backyard Legends Event)
(22 May 2026 – Present)
Previous Debut Current Debut Next Debut
Boombox
Wave 3
Whistle
Wave 5
Soccer Head
Wave 7
Victory Field (Backyard Legends Event)
(22 May 2026 – Present)
Previous Debut Current Debut Next Debut
Boombox
Wave 3
Whistle
Wave 5
Soccer Head
Wave 7


Normal Gamemode Enemies
Easy Mode
Casual Mode
Intermediate Mode
Molten Mode
Fallen Mode
Frost Mode
Challenge Trials
Hardcore Mode
Voidcore Mode
Special & PVP Enemies
Basic Arena
Molten Arena
Fallen Arena
Polluted Wasteland II
Badlands II
Pizza Party
Tutorial
Headache Headquarters
Sandbox Exclusive Enemies
Legacy Molten Mode
Golden Mode
Legacy Fallen Mode
Brain Rot
Other
Event Enemies
The Heights
Area 51
Nightmare Carnival
Village of Despair
Eggy Island
Trick or Threat Town
Outpost 32
(Frost Invasion)
Cyber City
Solar Eclipse Event Rotfield
Foggy Forest
Tower Outskirts
Totality Tower
D00M's Revenge
Cold Ambush
Lunar Overture Event A Dark Tale
The Haunted Past
The Great Finale
Krampus Frosthold
Huevous Hunt
The Classic Event Classic Candy Cane Lane
Classic Winter
Classic Forest Camp
Classic Island Chaos
Classic Castle
Hexscape Event Failed Gateway
The Nightmare Realm
Containment
Pls Donate
Outpost 32
(Operation I.C.E)
Korblox Temple
Bathroom Approach
Sk8 P4rk Noob
Pro
Master
Extreme
Halloween 2025 Live Events
Null & Void Event Outpost 16
Banlands
Blind Faith
The Narratorium
Backyard Legends Event Backyard Beginnings
Competition Court
Victory Field
Halloween 2026 Live Events
Solar Requiem Event Sorrowful Remains
Nightmare Flash
Legacy Enemies
Replaced
Pre-MEGA
Polluted Wasteland
Hidden Wave (Legacy)
Other
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