Chained Boss

Sandbox Only Content

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Chained Boss was previously removed on the 29th of October 2020, though it has been made available through the Sandbox mode later.
It is not accessible anywhere else in the game. This page will attempt to include information about both the version before removal and its re-added version.

Similar Article

This article is about Chained Boss. You may be looking for Slow Boss or Giant Boss.

Chained Boss
Mode Appearance	Golden
Wave Debut	22
Statistics
Base Health	1,800
Speed	Slow (1.5)
Cash Given	$5 on death
Hidden?	No
Flying?	No
Ghost?	No
Lead?	No
Attributes	Boss Immunities: Freeze Immunity Stun Immunity Toxic Gunner Slowdown Jester Confusion Nuke Fallout Damage DJ Booth Slowdown Defense Dropping

"Get ready for a HUGE boss!"

―Beginning of Wave 22 (Golden)

Description

The Chained Boss is a slow and tanky boss, similar to the Slow Boss. It has far more health than many enemies that come before it, but is also slow, making it a shield for enemies behind it.

The Chained Boss only appears in Golden mode, which is locked behind Sandbox mode. The Chained Boss used to be spawned from the Mystery Boss upon its death in Golden mode.

Appearance

• Current
• Version 2
• Version 1

The current version of the Chained Boss has a reflective dark green skin, and a rusted torso and legs. Chains are wrapped around both of its arms, torso and right leg. Rusted parts can be seen coming out from its back. It has a slash on its face.

The unused version of the Chained Boss had a reflective dark green skin, and a rusted torso and legs. Chains were wrapped around both of its arms, torso and right leg. Rusted parts could be seen coming out from its back. It had glowing yellow eyes and a drooling zombie face. It walked slightly hunchbacked and had a twisted left leg.

The Chained Boss was slightly taller than the Slow Boss, and walked with its head slightly tilted forwards. It had light green skin, a green pebble torso and grey pebble legs. Its eyes were also glowing yellow and it had a drooling zombie face. A chain was wrapped around its torso. It also had rusty parts coming out of where its heart would be, front and back. Its head also appeared to have a tumor on the right side.

Strategy

• High DPS towers such as the Minigunner or Turret can easily defeat the Chained Boss.
  • The Ranger also works well against this enemy.
  • If needed, the Commander can decrease the firerate of these towers.
• Later on during the game, Chained Bosses spawn in hordes quite close to each other.
  • For this reason, splash damage towers such as the Rocketeer and Mortar are quite effective against it.

Gallery

Other Variants

Second version, unused (added 29 October 2020)

First version (10 July 2019 – 29 October 2020)

Trailers

Tower Defense Simulator Trailer

Chained Boss in the game trailer.

Tower Defense Simulator Frost Invasion Trailer

Chained Boss in the game trailer.

Miscellaneous

Chained Boss on its Index icon.

Trivia

• The Chained Boss was not considered a boss before being renamed in the MEGA Update as it was simply called the Chained.
• For a brief period of time, the Chained Boss actually appeared naturally in Fallen mode on a single wave. However, this was later changed to Giant Bosses.
  • The Uber Mystery also had a chance to summon in the Chained Boss in Fallen mode.

Update History

• 10 July 2019 - BETA v1.3.0
  • Chained added.
• 13 October 2019 - Release v1.0.0
  • Renamed from Chained to Chained Boss.
  • Basic freeze immunity replaced with freeze immunity.
  • First wave appearance changed from wave 52 to wave 22 on Hard mode (later Golden mode) and wave 28 on Insane mode (later Fallen mode).
• 25 November 2019 - Release v1.3.0
  • Chained Boss no longer naturally appears in Insane mode.
• 14 February 2020 - Release v1.7.1
  • Partial electric immunity added.
• 29 October 2020 - Overhaul v1.0.0
  • Chained Boss removed.
  • NOTE: While the Chained Boss was removed in the Overhaul Update, multiple changes were made to it, though they could never be seen in-game due to its removal. These are:
    • Appearance changed.
    • Defense of 10 added.
    • Health decreased from 2,500 to 1,800.
    • Freeze and partial electric immunity removed.
    • Bug: Rust parts at the front of its torso fall into the void.
• 17 December 2024 - v1.46.4
  • Chained Boss now appears in Golden mode, if activated through Sandbox mode.
    • Because of changes made with updates, its appearance has been updated.
• 17 December 2024 - v1.46.5
  • Chained Boss no longer appears in Golden mode, as it has been removed.
• 12 February 2025 - v1.53.3a
  • Chained Boss now appears in Golden mode, if activated through Sandbox mode.

Notes

Golden
Previous Debut	Current Debut	Next Debut
Golden Wave 20	Chained Boss Wave 22	Dark Necromancer Wave 23

Pre-MEGA (Hard & Insane)
Previous Debut	Current Debut	Next Debut
Controlled Wave 51	Chained Wave 52	Witch Doctor Wave 54