Pedia special Call Reinforcements

In-game illustration.

Call Reinforcements is the first of the major spells in Kingdom Rush, Kingdom Rush: Frontiers, Kingdom Rush: Origins, Kingdom Rush: Vengeance. When used, it spawns two troopers that last for a certain period of time. Reinforcements act the same as troops summoned by any kind of Barracks, buying time by engaging non-flying enemies. It has a quick recharge rate of 10 seconds, so there is little sense keeping the spell charged: the more reinforcements on the battlefield, the more enemies are distracted. Reinforcements are useful as a replacement (albeit temporary) for barracks, sealing chokes, or holding back enemies straying too close to the exit. With their ranged attack upgraded, they can take on small number of flying enemies somewhat effectively.

In Kingdom Rush: Vengeance, this spell is renamed Call Demon Goonies, but remains largely the same in function and usage.


Kingdom Rush

Initially, the spell summons two basic Farmers that last 20 seconds, but with upgrades they can become very powerful, able to kill weaker enemies. Their ranged attack, Throwing Spears, is very strong, able to take out hordes of annoying Gargoyles. Reinforcements are also affected by the Spiked Armor upgrade for the Barracks (soldiers return part of their damage taken in melee). Sprites are picked randomly from the pool of different three for each type available. Malik Hammerfury is the hero corresponding to the Reinforcements upgrade path.

(Lifetime: 20 seconds, Recharge: 10 seconds)

Level Sprites HP Melee Damage Ranged Damage
0 Farmer1Farmer2Farmer3 30 1-2 None None
1 50 1-3 None None
2 Conscript1Conscript2Conscript3 70 2-4 None 10%
3 Warrior1Warrior2Warrior3 90 3-6 None 20%
4 Legionnaire1Legionnaire2Legionnaire3 110 6-10 None 30%
5 SpearThrow1SpearThrow2 110 6-10 24-40 30%

Kingdom Rush: Frontiers

Reinforcements have similar stats as in the original game, however wear different outfits and wield different weapons. Their ranged attack, Recurve Bow, is comparably weaker, yet faster than Throwing Spears, the ranged attack of Reinforcements in Kingdom Rush.

(Lifetime: 20 seconds, Recharge: 10 seconds)

Level Sprites HP Melee Damage Ranged Damage
(1.0s, 1.4sFlash)
0 Volunteer1Volunteer2Volunteer3 30 1-2 None None
1 50 1-3 None None
2 MenAtArms1MenAtArms2MenAtArms3 70 2-4 None 10%
3 Champion1Champion2Champion3 90 3-6 None 20%
4 SwornBlade1SwornBlade2SwornBlade3 110 6-10 None 30%
5 RecurveBow1RecurveBow2RecurveBow3 110 6-10 16-30 30%

Kingdom Rush: Origins

Reinforcements have improved HP, armor and damage compared to those of the previous two games. They also gain their ranged attack, the Elven Stars, earlier, at tier 2 star upgrade on the Reinforcements upgrade tree. However, the ranged attack is weakened by a slower attack rate (1.6 seconds). Also, the recharge period of the spell is increased to 15 seconds instead of 10 seconds, until tier 4 upgrade, "Rapid Response", is reached. The healing when idle is always 15 HP per second; the tier upgrades do not change the HP/s recovered.

(Lifetime: 20 seconds, Recharge: 15 seconds)

Level Sprites HP Melee Damage Ranged Damage
Armor Recharge
0 SkilledDefenders1SkilledDefenders2SkilledDefenders3 40 1-3 None None 15 seconds
1 60 3-5 None 20% 15 seconds
2 ElvenStars1ElvenStars2ElvenStars3 60 3-5 7-10 20% 15 seconds
3 GreenWardens1GreenWardens2GreenWardens3 100 5-10 10-20 35% 15 seconds
4 100 5-10 10-20 35% 10 seconds
5 MoonSentinels1MoonSentinels2MoonSentinels3 150 10-15 20-30 50% 10 seconds

Kingdom Rush: Vengeance

Reinforcements are called Demon Goonies. Their upgrade tree is notable for having two mutually-exclusive upgrades at level 3: the Demon Guards, which are tougher, and the Hellion Tridents, which have a ranged attack; each of these branches also has its own level 4 upgrade. The final upgrade in the tree is the same for both branches and does not increase reinforcements' stats; it instead gives a 30% chance for a powerful Pit Lord to be spawned alongside the two Demon Guards or Hellion Tridents when the spell is used.

(Recharge: 14 seconds)

Unit Sprites HP Melee Damage [Attack Rate] Ranged Damage [Attack Rate] Lifetime Armor
Demon Goonies Demon Goonies 30 1-2 [1.0s] None 12s None
Trained Goonies Trained Goonies 60 2-3 [1.0s] None 12s 10%
Demon Guard Demon Guards 150 4-8 [1.2s] None 12s 20%
Hellion Tridents Hellion Tridents 120 3-6 [1.2s] 3-6 [1.5s] 16s 10%
Flaming Tridents Flaming Tridents 120 3-6 [1.2s] 10-14 [1.5s] 16s 10%
Pit Lord Pit Lord 220 33-66 [2.0s] 33-66 [2.0s] 16s 20%

Related Upgrades

Kingdom Rush

  • KR Up WellFed Well Fed (2 Stars): Well Fed Farmers have additional health and deal a little more damage.
  • KR Up Consc Conscripts (3 Stars): Conscripts have more health and are better equipped.
  • KR Up Warr Warriors (3 Stars): Warriors have even more health and are excellently equipped.
  • KR Up Legion Legionnaires (3 Stars): Legionnaires have the most health and wear the best equipment.
  • KR Up SprThrw Spear Throw (4 Stars): Gives Legionnaires a spear throw attack that can target ground and flying enemies.
  • KR Up Spiked Spiked Armor (3 Stars): When attacked, soldiers' spiked armour return a percent of the damage received to the attacker. (~12.5% reflection of damage as True Damage)

Kingdom Rush: Frontiers

  • Up KRF Trained Trained Volunteers (2 Stars): Trained Volunteers have additional health and deal a little more damage.
  • Up KRF MenatArms Men-at-Arms (3 Stars): Men-at-Arms have more health and wear good armor.
  • Up KRF Champion Champion (3 Stars): Champions have even more health and wield great weapons.
  • Up KRF Sworn Sworn Blades (3 Stars): Sworn Blades have the most health and wield dual weapons.
  • Up KRF Recurve Recurve Bow (4 Stars): Gives reinforcements a ranged weapon that can target ground and flying enemies.
  • Up KRF Courage Courage (3 Stars): While in combat, soldiers, mercenaries & reinforcements regenerate health. (It doesn't when under area attack.)

Kingdom Rush: Origins

  • KRO Upgrade R 01 Level-1 Skilled Defenders (2 stars): Skilled defenders have more health and better equipment.
  • KRO Upgrade R 02 Level-2 Elven Stars (3 stars): Gives reinforcements a ranged weapon that can target ground and flying enemies.
  • KRO Upgrade R 03 Level-3 Green Wardens (3 stars): Green Wardens have more health, better armor and improved weapons.
  • KRO Upgrade R 04 Level-4 Rapid Response (3 stars): Reduces reinforcements cooldown by 5 seconds
  • KRO Upgrade R 05 Level-5 Moon Sentinels (4 stars): Moon sentinels are elite elven huntresses, riding giant panthers.

Kingdom Rush: Vengeance

  • KRVUp Infernal Infernal Combustion (1 upgrade point): On death, Goonies explode, dealing 20 area damage to all affected enemies.
  • KRVUp Trained Trained Goonies (2 upgrade points): Better trained for combat, Goonies now have improved health and damage.
  • KRVUp Guards Demon Guards (3 upgrade points): Goonies are now Demon Guards! They are capable of withstanding huge amounts of damage. (Mutually exclusive with Hellion Tridents)
    • KRVUp Nova Infernal Nova (2 upgrade points): Demon Guards now die with a bigger explosion, which deals 20 extra damage and reaches more enemies. (Requires Demon Guards)
  • KRVUp Hellion Hellion Tridents (3 upgrade points): Goonies are now Hellion Tridents! They are demons that can hit their enemies with a ranged attack. (Mutually exclusive with Demon Guards)
    • KRVUp Tridents Flaming Tridents (2 upgrade points): Hellion Tridents now throw burning tridents that burn enemies on impact for 2 seconds (total 10 damage, or 1 damage per 0.2 second). (Requires Hellion Tridents)
  • KRVUp PitLord Pit Lord (6 upgrade points): When reinforcements are called to the battlefield, now there's a 30% chance of summoning a Pit Lord with them.

Premium Content

On the Flash version of Kingdom Rush, after purchasing the Premium Content, the amount of troopers one can deploy at once with the Reinforcement spell is increased from two to three. Additionally the player can select costumes for the reinforcements to wear. The sets include:

  • Star Wars themed pack: Chewbacca, Darth Vader, Obi-Wan Kenobi and Yoda.
  • Mortal Kombat themed pack: Goro, Liu Kang, Scorpion and Sub-Zero.
  • Street Fighter themed pack: Blanka, Ken, Guile and Ryu.


Kingdom Rush and Frontiers

  • Reinforce!
  • Freedom!
  • To battle! (Flash and Steam only)
  • Rawr!


  • Swords ready!
  • Incoming!
  • Reinforce!


Demon Goonies

  • You talkin' to me?
  • Not again!
  • I hate this job!

Demon Guards

  • Let's crack some skulls!
  • Come here; I dare you!
  • Ready to serve!

Hellion Tridents

  • Let's make some kabobs!
  • This might sting!
  • Any last words?