Challenge Maps
Sandbox Only Content
Challenge Maps was previously removed on the 24th of September 2025, 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.
For quests, see Quests, while for mission quests, see Mission Quests.
Challenge Maps were regular maps with modifiers applied to them, which increased their difficulty. It could be found in the Quests menu under the Challenges tab. Upon triumphing the map, players were rewarded with various rewards. This feature has been removed from the main game and can currently only be accessed through Sandbox mode.
Mechanics[]
Challenge Maps did not require anything to be activated, other than having a level requirement of Level 50. Rewards from a Challenge Map could only be claimed once each week. Losing granted no rewards other than 
0 EXP. Triumphing granted rewards that changed based on the challenge.
One Challenge Map appeared every week, resetting at 00:00 UTC on Sundays. The challenge was the same for each player.
Last Challenge[]
All enemies have high defenses, tank and bloated modifiers.
2
137
4
440
Challenges[]
- Every player has the Scout, Sniper, Demoman, Soldier and Hunter in their loadout. Wave structure is made harder, some enemy stats are altered, starting cash is set to
$700 ($800 if in the Paradoxum Games group) and towers are intended to give back their total cost when sold. Detailed change list can be found here.
3, 
125, 400 EXP and three High Grade Consumable Crates- After Wave 5, one type of tower will be locked per player each wave. Additionally, wave structure is updated to spawn more enemies and give them attributes, making it more challenging. Detailed change list can be found here.
100, 2, 200 EXP and two High Grade Consumable Crates- Enemies have their defense increased by 50% and are all given the Bloated attribute, while some of them have the Tank attribute. Starting cash is set to $800 ($900 if in the Paradoxum Games group) and wave bonus is boosted heavily. Detailed change list can be found here.
137, 4, 440 EXP and two Nukes[1]- Most enemies spawn twice, waves are altered to have stronger enemies and wave bonus is reduced. Starting cash is set to $700 ($800 if in the Paradoxum Games group). Detailed change list can be found here.
2, 110, 330 EXP and two High Grade Consumable Crates[2]- Enemies have the Slime attribute. Several enemies are replaced by their stronger variant found in Polluted Wasteland II, such as the Abomination and the Nuclear Monster. Starting cash is set to $1,400 ($1,500 if in the Paradoxum Games group) and wave bonus is increased. Detailed change list can be found here.
200, 600 EXP, 4 and three Blizzard Bombs[3]- Enemies have the Nimble attribute. Starting cash is set to $700 ($800 if in the Paradoxum Games group). Detailed change list can be found here.
110, 3, 385 EXP and two Blizzard Bombs[4]Sandbox-exclusive[]
- Hordes of enemies with few waves between new debuts and multiple boss fights as waves progress.
150, 4, 500 EXP and three NukesOther Maps[]
Certain maps also used the Challenge Maps system to alter the match, by for example changing statistics of enemies. However, they were not intended to appear as a proper Challenge Map which appeared in the Challenge Map rotation. These were all the map which use the Challenge Map system, but were not actually Challenge Maps as they could not appear as one of the Challenge Maps every week.
- Badlands II - Badlands II
- Portal to the Past - Classic Candy Cane Lane
- Return of the Korblox - Classic Winter
- Clash at the Forest Camp - Classic Forest Camp
- Tropical Turmoil - Classic Island Chaos
- Castle Siege - Classic Castle
- Pizza Party - Pizza Party
- Polluted Wasteland II - Polluted Wasteland II
Challenge History[]
If a challenge started in one month but ended in another, it will be listed in the month that it started in.
September 2025
21 September 2025 – 28 September 2025
All enemies have high defenses, tank and bloated modifiers.
21374440
14 September 2025 – 21 September 2025
AOE focused challenge that pits the player against swarms of enemies.
21102330
7 September 2025 – 14 September 2025
Players are given a loadout of basic towers.
31253400
August 2025
31 August 2025 – 7 September 2025
AOE focused challenge that pits the player against swarms of enemies.
21003002
24 August 2025 – 31 August 2025
Players are given a loadout of basic towers.
31253400
17 August 2025 – 24 August 2025
After wave 5; once per wave, a tower type will be jailed per player.
21002300
10 August 2025 – 17 August 2025
All enemies have Slime.
32125680
3 August 2025 – 10 August 2025
All enemies have high defenses, tank and bloated modifiers.
21254400
July 2025
27 July 2025 – 3 August 2025
All enemies have Nimble.
21103385
20 July 2025 – 27 July 2025
After wave 5; once per wave, a tower type will be jailed per player.
21002300
13 July 2025 – 20 July 2025
All enemies have high defenses, tank and bloated modifiers.
21254400
6 July 2025 – 13 July 2025
Players are given a loadout of basic towers.
31254003
June 2025
29 June 2025 – 6 July 2025
AOE focused challenge that pits the player against swarms of enemies.
21102330
22 June 2025 – 29 June 2025
Players are given a loadout of basic towers.
31254003
15 June 2025 – 22 June 2025
All enemies have Slime.
31754560
1 June 2025 – 8 June 2025
AOE focused challenge that pits the player against swarms of enemies.
21102330
May 2025
25 May 2025 – 1 June 2025
All enemies have Nimble.
21103385
18 May 2025 – 25 May 2025
All enemies have Slime.
31754560
11 May 2025 – 18 May 2025
All enemies have Nimble.
21103385
4 May 2025 – 11 May 2025
All enemies have Slime.
31754560
April 2025
27 April 2025 – 4 May 2025
Players are given a loadout of basic towers.
31254003
20 April 2025 – 27 April 2025
All enemies have Nimble.
21003350
13 April 2025 – 20 April 2025
AOE focused challenge that pits the player against swarms of enemies.
21003002
6 April 2025 – 13 April 2025
All enemies have high defenses, tank and bloated modifiers.
21254400
March 2025
30 March 2025 – 6 April 2025
Players are given a loadout of basic towers.
31253400
23 March 2025 – 30 March 2025
All enemies have Slime.
32125680
16 March 2025 – 23 March 2025
All enemies have high defenses, tank and bloated modifiers.
21254400
9 March 2025 – 16 March 2025
All enemies have Slime.
32125680
2 March 2025 – 9 March 2025
All enemies have Nimble.
21103385
February 2025
23 February 2025 – 2 March 2025
All enemies have Slime.
32125680
16 February 2025 – 23 February 2025
Players are given a loadout of basic towers.
31254003
8 February 2025 – 16 February 2025
All enemies have Nimble.
21103385
2 February 2025 – 8 February 2025
AOE focused challenge that pits the player against swarms of enemies.
21003002
January 2025
26 January 2025 – 2 February 2025
All enemies have high defenses, tank and bloated modifiers.
21374440
19 January 2025 – 26 January 2025
All enemies have Nimble.
21103385
12 January 2025 – 19 January 2025
After wave 5; once per wave, a tower type will be jailed per player.
21002300
5 January 2025 – 12 January 2025
All enemies have high defenses, tank and bloated modifiers.
21254400
December 2024
29 December 2024 – 5 January 2024
AOE focused challenge that pits the player against swarms of enemies.
21102330
22 December 2024 – 29 December 2024
Players are given a loadout of basic towers.
31254003
15 December 2024 – 22 December 2024
All enemies have Slime.
31754560
8 December 2024 – 15 December 2024
All enemies have high defenses, tank and bloated modifiers.
21374440
1 December 2024 – 8 December 2024
AOE focused challenge that pits the player against swarms of enemies.
21102330
November 2024
24 November 2024 – 1 December 2024
All enemies have Nimble.
21103385
17 November 2024 – 24 November 2024
Players are given a loadout of basic towers.
31253400
10 November 2024 – 17 November 2024
AOE focused challenge that pits the player against swarms of enemies.
21102330
3 November 2024 – 10 November 2024
All enemies have Nimble.
21103385
October 2024
27 October 2024 – 3 November 2024
Players are given a loadout of basic towers.
31253400
20 October 2024 – 27 October 2024
All enemies have Slime.
31754560
13 October 2024 – 20 October 2024
All enemies have Nimble.
21103385
6 October 2024 – 13 October 2024
AOE focused challenge that pits the player against swarms of enemies.
21102330
September 2024
29 September 2024 – 6 October 2024
All enemies have high defenses, tank and bloated modifiers.
21254400
22 September 2024 – 29 September 2024
After wave 5; once per wave, a tower type will be jailed per player.
21002300
15 September 2024 – 22 September 2024
All enemies have high defenses, tank and bloated modifiers.
21254400
8 September 2024 – 15 September 2024
AOE focused challenge that pits the player against swarms of enemies.
21102330
1 September 2024 – 8 September 2024
All enemies have high defenses, tank and bloated modifiers.
21254400
August 2024
25 August 2024 – 1 September 2024
All enemies have Slime.
31754560
18 August 2024 – 25 August 2024
Players are given a loadout of basic towers.
31253400
11 August 2024 – 18 August 2024
All enemies have Slime.
31754560
4 August 2024 – 11 August 2024
Players are given a loadout of basic towers.
31253400
July 2024
28 July 2024 – 4 August 2024
AOE focused challenge that pits the player against swarms of enemies.
21102330
21 July 2024 – 28 July 2024
After wave 5; once per wave, a tower type will be jailed per player.
21002300
14 July 2024 – 21 July 2024
All enemies have Slime.
31754560
7 July 2024 – 14 July 2024
AOE focused challenge that pits the player against swarms of enemies.
21002300
June 2024
30 June 2024 – 7 July 2024
Players are given a loadout of basic towers.
31253400
23 June 2024 – 30 June 2024
After wave 5; once per wave, a tower type will be jailed per player.
21002300
22 June 2024 – 23 June 2024
All enemies have high defenses, tank and bloated modifiers.
21254400
Update History[]
- 23 May 2024 - v1.23.0
- Challenge map system implemented, applied to The Classic Event, Polluted Wasteland II, Badlands II and Pizza Party.
- 21 June 2024 - v1.25.0
- Challenge Maps added.
- Challenges: Juggernaut, Jailed Towers, Back to Basics, Legion, Oops! All slimes!, Vanguard
- Challenge Maps added.
- 16 December 2024 - v1.46.0
- 24 September 2025 - v1.75.0
- Challenge Maps can now be accessed exclusively in Sandbox mode, as the challenges button has been removed, and replaced by Challenge Trials.
Notes[]
- ↑ Base rewards are 125, 4, 400 EXP and two Nukes.
- ↑ Base rewards are 2, 100, 300 EXP and two High Grade Consumable Crates.
- ↑ Base rewards are 125, 400 EXP, 3 and three Blizzard Bombs.
- ↑ Base rewards are 100, 350 EXP, 3 and two Blizzard Bombs.
