From Mechabellum Wiki

Heavy rocket launcher

Mobility Ground
Giant No
Cost 200
Unlock cost 50
Units 4
HP 1149
Attack 860 × 4
Target Ground Only
Attack Interval 6.3s
Splash Damage 5.5m
Burst Damage 13760
Max DPS 2184
Range 180m
Speed 6m/s
A very fragile unit that excels at super long-range splash damage in a large area. It is unable to attack units that are in close range to it.
Values are normalized to the supply cost of the unit to make it easier to compare units.
The Splash Index tries to calculate the effectiveness vs spam by multiply attacks with slash area and a penalty for damage below 350.
Unit Cost

50 - 62.5

HP Value

18.4 - 23

Burst Value

55 - 68.8

DPS Value

8.7 - 10.9

Splash Index




The Stormcaller is a fragile, long-range artillery platform designed to decimate groups of enemies from a distance.

The Stormcaller's rocket barrage is unique in that it deals substantial damage both to single targets and to chaff units, enabling Stormcallers to cripple or outright kill grounded units too slow to evade its attacks. A few units of Stormcallers deal enough single-target damage to threaten even giant units, and the AoE on its rockets become more useful in later rounds, where there are more and more units that could potentially be hit by a rocket volley. While the Stormcaller possesses incredible damage potential, it also has a number of weaknesses. Stormcallers fragile and can't attack adjacent units, meaning that units like Crawlers and Rhinos that can get inside its attack range will destroy them. Stormcallers have no way to attack air units and require anti-air support, and their rockets can also be shot out of the air by Mustangs with Missile Interception, severely limiting the Stormcaller's damage output until the Mustangs are destroyed.

As a general rule, 3 units of Mustangs will consistently intercept the missiles of 1 unit of Stormcallers - if you have more Stormcallers, eventually some of your rockets will successfully land. Like all fragile units with long range, Stormcallers are threatened by any unit that can outrange it due to their fragility and low fire rate, though this would require the Range Enhancement tech upgrade to achieve.

Though the Stormcaller has a powerful attack, the rockets it fires are unguided and take a while to reach its destination. Fast units such as Crawlers, Rhinos, and Steel Balls are naturally fast enough to outrun Stormcaller rockets, while slower units that have had their speed increased (e.g. Speed Specialist, Mechanical Rage) can evade some of the Stormcaller's rockets, noticeably decreasing its damage output. The rockets also have a low accuracy and spread the damage over a wide area. Against shields and giants this is no problem but smaller units only get hit by a few rockets.

The Stormcaller has no defensive upgrades - it's tech upgrades solely focus on increasing its damage. Range Enhancement is key for when the enemy commander begins deploying long-range units of their own (e.g. Fortresses, opposing Stormcallers), while Armor-Piercing Anti-Tank Shells let Stormcallers more effectively take down giant units or shields. Stormcallers are also one of the more reliable ways to disable enemy tech upgrades with Electromagnetic Explosion thanks to their long range and area of effect.

Tech Upgrades

Icon Name Cost Description
Incendiary Bomb 300 The unit's attack will ignit an area of 5.5m radius for 15s, dealing 350 damage per second. Allied forces are vulnerable to this damage
Range Enhancement 300 Increases attack range by 40m
Range 220m
Launcher Overload 300 Stormcaller's attack interval is reduced by 50%, range is reduced by 40m, and movement speed is increased by 5m/s
Attack interval 3.2s, Range 140m, Speed 11m/s
High-Explosive Ammo 200 Increases splash damage range by 5m, but reduces ATK by 40%
Attack 516 * 4, Splash area 10.5m
Electromagnetic Explosion 300 Causes electromagnetic interference on hit, temporarily disabling the target unit's Tech and reducing its movement speed by 40%
Debuff duration 7 seconds
High Explosive Anti-tank Shells 200 ATK increases by 100%, attack interval increases by 15%
Attack 1720 * 4, Attack interval 7.2s

Update Notes

  • ATK reduced from 905 to 860.
  • [High Explosive Ammo]: Price adjusted from 250 to 200
  • [Armor-Piercing Bullet][High Explosive Anti-tank Shells]: Price adjusted from 300 to 200
  • [Launcher Overload]: The movement speed increase adjusted from 3 to 5, and the range reduction adjusted from 45 to 40.
  • Stormcaller's damage reduced by 2%.
  • Adjusted the range reduction effect of Stormcaller's [Launcher Overload] from 40m to 45m
  • Launcher Overload now also increases movement speed by 3m/s
  • High-Explosive Ammo Tech price 200 -> 250
  • Page created