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Royal Catapult, official art

Royal Catapult

The Royal Catapult is an artillery tower that deals explosive damage, available from the start.

Line
artillery
On Steam
Available from the start
On mobile
Free, unlocked by the same stars
Gold
110 gold to build, 830 gold to reach level IV

In Ironhide’s words

In terms of gameplay, the Royal Catapult is what you'd expect from an artillery tower: long range, slow rate of fire, and devastating area damage. Where things get interesting is in the upgrade tree.
You'll have meaningful choices to make about what kind of artillery you want this to be, whether you lean into stalling with crowd-control tools, or doubling down on raw explosive damage.
We're talking about one of the most iconic tower archetypes in the saga: artillery. And more specifically, the very first artillery tower you'll unlock in the game,

Levels I to IV

LevelCostDamageAttack everyRange
I11012-183 s250
II17030-443 s265
III24052-783 s280
IV31080-1203 s300

Reaching level IV costs 830 gold in total; buying every skill level on top costs 1,250 gold. Selling returns 60% of gold spent; 100% before the first wave.

Level IV skills and ultimate

At level IV the Royal Catapult opens 3 skills bought with gold during the battle, and the ultimate Blazing Ball from the Upgrades room.

Tarred Zone

  1. L1Hurls a tar barrel at enemies that hits for 80-120 explosive damage and applies a 40% slow lasting 6 seconds.100 gold · 15 s cooldown
  2. L2Hurls a tar barrel at enemies that hits for 80-120 explosive damage and applies a 50% slow lasting 8 seconds.100 gold · 15 s cooldown
  3. L3Hurls a tar barrel at enemies that hits for 80-120 explosive damage and applies a 60% slow lasting 10 seconds.100 gold · 15 s cooldown

Powerball

  1. L1Projectiles now detonate 0.1 seconds after they land, hitting enemies within 60 for 18-32 explosive damage, strongest at the point of impact.200 gold
  2. L2Projectiles now detonate 0.1 seconds after they land, hitting enemies within 60 for 36-64 explosive damage, strongest at the point of impact.200 gold
  3. L3Projectiles now detonate 0.1 seconds after they land, hitting enemies within 60 for 52-92 explosive damage, strongest at the point of impact.200 gold

Secure the Area

  1. L1Sets a trap on a nearby path every 7 seconds; it hits for 20-30 physical damage and stuns enemies for 1 second.150 gold · 7 s cooldown
  2. L2Sets a trap on a nearby path every 7 seconds; it hits for 32-48 physical damage and stuns enemies for 2 seconds.100 gold · 7 s cooldown
  3. L3Sets a trap on a nearby path every 7 seconds; it hits for 48-72 physical damage and stuns enemies for 3 seconds.100 gold · 7 s cooldown

Blazing Ball Ultimate

Hurls a blazing rock that rolls along the path, hitting enemies for 195 explosive damage and burning them for 64 true damage over 4 seconds.30 s cooldown

Unlocked by Ultimate Destruction (5 points, Upgrades room).

Other artillery towers

In Classic Rush this slot goes back to the first game’s artillery line instead: Dwarven Bombardier, Dwarven Artillery, Dwarven Howitzer, then Tesla x104 or Big Bertha at level 4.

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