Lua Script Error Detected
Major Maintenance
in progress
Major Maintenance
in progress

… One of the most effective weapons at close range. What it lacks in accuracy it more than makes up in firepower.… – in-game description

Icn damage kinetic Kinetic


The Thunder is a close to mid-range (up to 500 meters, with a 75-meter optimal range) heavy kinetic weapon.


This weapon is essentially a massive shotgun and is best used in close range combat. Despite a maximum range of 500 meters, an optimum range would be about 200 meters or less, due to the spread of the bullets. Below 200 meters a Thunder can quickly eliminate or at the least maim a heavy robot. The Thunder is especially effective against heavy robots due to their large hit area, which allows more of the shell fragments to hit.

Even at low levels, the Thunder is a force to be reckoned with, but when upgraded to higher levels it can do appreciable damage from even 300 meters. With a fire rate of 1 RPS and the ability to reload while firing, it can do very heavy damage in a brief amount of time. Due to its FWR system (Fire while reload), it can continuously fire significantly more rounds than its full magazine.

However, because the robot must get close to an enemy to do significant damage, it will be vulnerable to enemy fire at longer distances. Therefore, it is vital to take advantage of cover as much as possible to minimize damage while getting into a good engagement range (about 200 meters and under if possible.) 

Because the Thunder is a close-range gun, it is most commonly seen on fast moving medium robots since they can quickly close range. Commonly seen setups are the Thunder Schutze, Thunder/Orkan Boa, and Pinata/Thunder Vityaz. However, Carnage and Lancelot possibly are the best bots for Thunder, due to their power and rush abilities. Thunders can also be seen on Raijins, due to its Bastion ability and large health pool.

It is not uncommon to see Thunders equipped on heavy robots like the Leo or Natasha for use as heavily armored shotgun platforms which have the staying power to hold off multiple enemy robots. Even though heavier robots generally have more HP and power, they also tend to have much lower movement speeds. This makes closing distances to actually do damage a problem, although this is somewhat negated (in the case of the Leo) by their very high HP, and with more than one heavy slot, moderate damage.

The Thunder is also an effective shield-breaker. This is because it can damage energy shields even at 400-500 meters due to bullet spread, and does double damage to physical shields as it is a kinetic weapon.

However, the Thunder is quite a rare sight in higher leagues (Diamond and above) due to it significantly underperforming for its weapon class and role. While it remains effective in lower leagues, it isn’t advised to use Thunders beyond Diamond, as other weapon such as the Avenger perform far better.

Mark I Statistics

Purchase Information

Level Cost Damage Burst
5 580,000 Ag 7600 68400 7600 3800

Upgrade Information

Level Cost AgIcon Time Damage Burst
6 400,000 8 hours 8352 75168 8352 4176
7 800,000 17 hours 9184 82656 9184 4592
8 1,500,000 21 hours 10096 90864 10096 5048
9 3,000,000 1 day 11088 99792 11088 5544
10 5,000,000 1 day 7 hours 12192 109728 12192 6096
11 8,000,000 1 day 18 hours 13392 120528 13392 6696
12 13,000,000 2 days 9 hours 14720 132480 14720 7360
Cost Time
Totals 31,700,000 8 days 15 hours

  • This table shows the damage from all 16 particles fired from each shot.

Mark II Statistics

Purchase Information

Level Cost Damage Burst
1 500 Au 6256 56304 6256 3128

Note: Level 12 Mark I is required to enhance (purchase) to Mark II.

Upgrade Information

Level Cost AgIcon Time Damage Burst
2 10,000 5 minutes 6864 61776 6864 3432
3 40,000 30 minutes 7552 67968 7552 3776
4 80,000 1 hour 8304 74736 8304 4152
5 200,000 4 hours 9120 82080 9120 4560
6 400,000 8 hours 10016 90144 10016 5008
7 800,000 17 hours 11008 99072 11008 5504
8 1,500,000 21 hours 12112 109008 12112 6056
9 3,000,000 1 day 13296 119664 13296 6648
10 5,000,000 1 day 7 hours 14624 131616 14624 7312
11 8,000,000 1 day 18 hours 16064 144576 16064 8032
12 13,000,000 2 days 9 hours 17664 158976 17664 8832
Cost Time
Totals 31,970,000 8 days 16 hours 35 minutes

  • This table shows the damage from all 16 particles fired from each shot.

Accuracy By Distance

Range Accuracy %
50 meters or less 100%
100 meters 81%
150 meters 49%
200 meters 26%
250 meters 21%
300 meters 10%
350 meters 9%
400 meters 8%
450 meters 8%
500 meters 8%

Update History

Version Changes
4.7 Balance Changes:
Damage increased by 5%
Total Upgrade Time: 8 days 15 hours⟶6 days 22 hours
4.5 Economy Changes:
Total Upgrade Cost: 63,400,000 Ag⟶31,700,000 Ag
Total Upgrade Time: 16 days 15 hours 48 minutes⟶8 days 15 hours
4.0 Economy Changes (July 5):
Total Upgrade Time: 16 days 16 hours⟶16 days 15 hours 48 minutes
3.2.0 Damage reduced by 5%
3.1 Damage reduced by 5%
Now does double damage to physical shields, along with kinetic weapons
2.5 Name shortened
1.3.0 Sound effects when shooting and reloading added/changed
0.9.1 Accuracy decreased by 29%
0.9.0 Damage increased by 11.5%
0.6.3 Price changed from Au to Ag
Effective range from 300 meters to 200 meters
0.6.1 Accuracy increased by 15%
0.3.0 Weapon was added to the game


What balance change does the Thunder need after the 5.8 update?

The poll was created at 15:59 on March 14, 2020, and so far 102 people voted.


  • This weapon can fire while reloading, similar to the Orkan, Gekko, Pinata, Pin, Trident, Exodus, Flux, and Tulumbas.
  • The name Thunder may refer to the booming noise it makes when fired.
  • Despite having a 5-round capacity, the Thunder can fire up to 9 rounds in succession when fully loaded without more than a 1-second delay. This is due to the Thunder's ability to fire while reloading.
  • There is a cylinder in the back of the Thunder that spins while reloading. This is probably a pan magazine.
  • The Thunder ejects in and out of its slot while firing- occasionally a robot will become destroyed in the middle of this phenomenon, leading to an entertaining robot corpse with a Thunder partially ejected.
  • The Thunder used to have a prefix 'ECC' until it was removed in Update 2.5
  • Some players have been angered by several damage nerfs to the Thunder in recent updates. Despite this, it has gained the ability (along with other kinetic weapons e.g. Punisher) to do double damage to physical shields (e.g. Ecu)
  • This is the only heavy weapon to be weaker than one of its smaller counterparts (Storm)
  • A single shot from Thunder consists of 16 individual projectiles. Unlike other weapons with multiple projectiles, they are not considered separately in the damage table.
Community content is available under CC-BY-SA unless otherwise noted.