
Castle ArenaLibrary
Factions

The Corrupted
Trees that curse whoever strikes them, void creatures that corrode armor, and infernal engines.
An ancient forest drank from a rift that should never have opened, and what sprouted there holds a grudge against everything still green. Trees that weaken whoever strikes them, void creatures that corrode armor and furnaces that never go out march to spread the rot across the field, leaving every foe weaker than it arrived.
Buildings and troops
One entry per build slot (the key you press in the game). Open it to see each building, what it upgrades into and the troop it trains.
QSpiteful Thicket · War Thicket · Thicket of Annihilation
Sprouts Spiteful Saplings.
- Cost
- 125 gold
- Health
- 1200
- Armor
- 5 · Fortified
- Build
- 2s
- Income
- +2.50
- Lumber back
- +125
- Trains every
- 21s
Spiteful Branches: the enemy struck deals −27% damage for 20s.
- Health
- 320 (+0.31/s)
- Armor
- 4 · Heavy
- Attack type
- Normal
- Damage
- 26–27
- Range
- melee
- Speed
- 300
- Bounty
- 5 gold
- Spawns every
- 21s
Strong against: Medium 175%Weak against: Light 70%, Fortified 50%, Hero 60%, Divine 25%
- Spiteful Branches. The enemy struck deals −27% damage for 20s.
Barely out of the ground and already holding a grudge; whoever strikes it feels the axe go limp in hand.
Sprouts Wicked Trunks.
- Cost
- 125 gold
- Health
- 1300
- Armor
- 5 · Fortified
- Upgrade
- 2s
- Income
- +2.50
- Lumber back
- +125
- Trains every
- 27s
Malignant Branches: the enemy struck deals −55% damage for 20s. Cleave (25%) and 10% critical strike (×2).
- Health
- 640 (+0.63/s)
- Armor
- 5 · Heavy
- Attack type
- Normal
- Damage
- 50–55
- Range
- melee
- Speed
- 300
- Bounty
- 9 gold
- Spawns every
- 27s
Strong against: Medium 175%Weak against: Light 70%, Fortified 50%, Hero 60%, Divine 25%
- Cleave. Each hit deals 25% of its damage around the target (radius 250).
- Critical strike. 10% chance of a critical strike (×2).
- Malignant Branches. The enemy struck deals −55% damage for 20s.
Every ring in its trunk marks a year of hatred, and it counts them aloud as it fights.
Legendary: sprouts the Arboreal Annihilator.
- Cost
- 500 gold · 375 lumber · 1 crystal
- Health
- 1900
- Armor
- 5 · Fortified
- Upgrade
- 2s
- Income
- +10.00
- Lumber back
- +500
- Trains every
- 52s
Legendary. Malignant Branches: the enemy struck deals −100% damage for 20s. Cleave (40%) and 15% critical strike (×2). Thicket of Spikes (40 mana, every 15s): impales ground enemies in a cone ahead, 250 spell damage and a 3.5s stun.
- Health
- 1800 (+2/s)
- Armor
- 8 · Heavy
- Attack type
- Normal
- Damage
- 140–160
- Range
- melee
- Speed
- 300
- Bounty
- 24 gold
- Mana
- 125 (+2/s)
- Spawns every
- 52s
Strong against: Medium 175%Weak against: Light 70%, Fortified 50%, Hero 60%, Divine 25%
- Cleave. Each hit deals 40% of its damage around the target (radius 250).
- Critical strike. 15% chance of a critical strike (×2).
- Legendary resistance. Legendary: −70% spell damage; immune to hex, mind control and instant death.
- Malignant Branches. The enemy struck deals −100% damage for 20s.
- Thicket of Spikes. Every 15s (40 mana): impales ground enemies in a cone ahead, 250 spell damage and a 3.5s stun. 40 mana · cooldown 15s
Its roots burst through the ground and skewer whoever treads above; it is the spite of an entire forest, standing tall.
WVoid Rift · Void Maw
Calls forth Void Wanderers.
- Cost
- 190 gold
- Health
- 1200
- Armor
- 5 · Fortified
- Build
- 2s
- Income
- +3.80
- Lumber back
- +190
- Trains every
- 24s
Incinerate: each consecutive hit on the same target deals +7 magic damage, and enemies it kills explode (80 spell damage around them). Corrosion aura: −2 armor to nearby enemies.
- Health
- 375
- Armor
- 2 · Light
- Attack type
- Magic
- Damage
- 40–40
- Range
- 380
- Speed
- 270
- Bounty
- 7 gold
- Spawns every
- 24s
Strong against: Heavy 175%Weak against: Medium 70%, Fortified 40%, Hero 60%, Divine 25%
- Incinerate. Each consecutive hit on the same target deals +7 damage.
- Aura. Nearby enemies (radius 590): −2 armor.
- Incinerate. Enemies it kills explode: 80 spell damage around them.
- Incinerate. Enemies it kills explode: 80 spell damage around them.
It drifts aimlessly across the field, and wherever it passes, steel rusts and leather cracks.
Calls forth Void Watchers.
- Cost
- 190 gold
- Health
- 1400
- Armor
- 5 · Fortified
- Upgrade
- 2s
- Income
- +3.80
- Lumber back
- +190
- Trains every
- 34s
Incinerate: each consecutive hit on the same target deals +7 magic damage, and enemies it kills explode (160 spell damage around them). Corrosion aura: −4 armor to nearby enemies.
- Health
- 740 (+1.5/s)
- Armor
- 4 · Light
- Attack type
- Magic
- Damage
- 80–80
- Range
- 400
- Speed
- 270
- Bounty
- 13 gold
- Spawns every
- 34s
Strong against: Heavy 175%Weak against: Medium 70%, Fortified 40%, Hero 60%, Divine 25%
- Incinerate. Each consecutive hit on the same target deals +7 damage.
- Aura. Nearby enemies (radius 650): −4 armor.
- Incinerate. Enemies it kills explode: 160 spell damage around them.
- Incinerate. Enemies it kills explode: 160 spell damage around them.
It never blinks, never sleeps, and under its gaze armor crumbles like a dry leaf.
EEthereal Tree · Shadow Tree
Hatches Ethereal Whelps.
- Cost
- 235 gold
- Health
- 1300
- Armor
- 5 · Fortified
- Build
- 2s
- Income
- +4.70
- Lumber back
- +235
- Trains every
- 26s
Magic breath. Midnight Infusion: each attack spends 20 mana to deal +15 damage and splash 50% as magic damage.
- Health
- 425
- Armor
- 2 · Medium
- Attack type
- Magic
- Damage
- 45–50
- Range
- 400
- Speed
- 350
- Bounty
- 7 gold
- Mana
- 125 (+1.5/s)
- Spawns every
- 26s
Strong against: Heavy 175%Weak against: Medium 70%, Fortified 40%, Hero 60%, Divine 25%
- Midnight Infusion. Each attack spends 20 mana to deal +15 damage and splash 50% as magic damage. 20 mana
Half smoke, half dragon, it hasn’t learned to aim yet; that’s why it hits everyone.
Hatches Shadow Drakes.
- Cost
- 165 gold
- Health
- 1500
- Armor
- 5 · Fortified
- Upgrade
- 2s
- Income
- +3.30
- Lumber back
- +165
- Trains every
- 35s
Magic breath. Midnight Infusion: each attack spends 20 mana to deal +25 damage and splash 50% as magic damage.
- Health
- 700 (+1/s)
- Armor
- 4 · Medium
- Attack type
- Magic
- Damage
- 80–85
- Range
- 400
- Speed
- 350
- Bounty
- 13 gold
- Mana
- 150 (+1.6/s)
- Spawns every
- 35s
Strong against: Heavy 175%Weak against: Medium 70%, Fortified 40%, Hero 60%, Divine 25%
- Midnight Infusion. Each attack spends 20 mana to deal +25 damage and splash 50% as magic damage. 20 mana
It grew up in the crown of the Shadow Tree, and its breath tastes of a starless night.
RVile Kennel
Unleashes Vile Hounds.
- Cost
- 240 gold
- Health
- 1300
- Armor
- 5 · Fortified
- Build
- 2s
- Income
- +4.80
- Lumber back
- +240
- Trains every
- 27s
Frenzy aura: +18% attack speed for nearby allies.
- Health
- 650 (+1/s)
- Armor
- 7 · Medium
- Attack type
- Pierce
- Damage
- 53–63
- Range
- melee
- Speed
- 330
- Bounty
- 8 gold
- Spawns every
- 27s
Strong against: Light 175%Weak against: Heavy 70%, Fortified 45%, Hero 60%, Divine 25%
- Aura. Nearby allies (radius 900): +18% attack speed.
Its howl makes allies eager to bite; its smell makes everyone else eager to flee.
AInfernal Furnace · Searing Furnace
Assembles Burning Engines.
- Cost
- 300 gold
- Health
- 1400
- Armor
- 5 · Fortified
- Build
- 2s
- Income
- +5.40
- Lumber back
- +225
- Trains every
- 30s
Long-range siege. Unbound Hellfire: explodes on death (100 spell damage around it).
- Health
- 600 (+0.75/s)
- Armor
- 3 · Heavy
- Attack type
- Siege
- Damage
- 70–75
- Range
- 600
- Speed
- 290
- Bounty
- 9 gold
- Spawns every
- 30s
Strong against: Fortified 160%Weak against: Light 70%, Medium 70%, Heavy 70%, Hero 40%, Divine 20%
- Unbound Hellfire. Explodes on death: 100 spell damage around it.
- Unbound Hellfire. Explodes on death: 100 spell damage around it.
A cauldron on wheels that spits glowing stone over the walls.
Assembles Burning Ironclads.
- Cost
- 150 gold
- Health
- 1500
- Armor
- 5 · Fortified
- Upgrade
- 2s
- Income
- +2.70
- Lumber back
- +112.5
- Trains every
- 37s
Siege. Shadow Bolt: every shot also fires a piercing bolt in a straight line, 60 spell damage to ground troops. Unbound Hellfire: explodes on death (150 spell damage around it).
- Health
- 850 (+1.13/s)
- Armor
- 4 · Heavy
- Attack type
- Siege
- Damage
- 70–90
- Range
- 600
- Speed
- 290
- Bounty
- 14 gold
- Spawns every
- 37s
Strong against: Fortified 160%Weak against: Light 70%, Medium 70%, Heavy 70%, Hero 40%, Divine 20%
- Shadow Bolt. Every shot also fires a piercing bolt in a straight line: 60 spell damage to ground troops.
- Unbound Hellfire. Explodes on death: 150 spell damage around it.
- Unbound Hellfire. Explodes on death: 150 spell damage around it.
More plating, more fire, and with every shot a shadow bolt leaps off in search of company.
SDemonic Statue
Awakens Abyssal Seducers.
- Cost
- 520 gold
- Health
- 1600
- Armor
- 5 · Fortified
- Build
- 2s
- Income
- +10.40
- Lumber back
- +520
- Trains every
- 41s
Chaos damage with 50% splash. Seduction: 10% chance per hit that the enemy struck joins your side.
- Health
- 1000 (+2/s)
- Armor
- 4 · Medium
- Attack type
- Chaos
- Damage
- 90–107
- Range
- 520
- Speed
- 320
- Bounty
- 16 gold
- Spawns every
- 41s
- Splash damage. The shot splashes 50% of its damage around (radius 250).
- Seduction. 10% chance per hit that the enemy struck joins your side.
It promises every soldier exactly what they desire, and delivers ruin by the heap.
DWell of Torment
Special: Touch of Pain every 5s, 160 spell damage to a random enemy troop (preferring wounded ones, never legendary); on a kill, a Ghost of Sorrow rises on your side. Stores up to 8 charges, which Burst of Pain releases at once.
- Cost
- 270 gold · 450 lumber
- Health
- 900
- Armor
- 5 · Fortified
- Build
- 2s
- Income
- +2.43
- Mana
- 40 (+1/s)
- Touch of Pain. Every 5s: 160 spell damage to a random enemy troop, preferring wounded ones, never legendary. On a kill, a Ghost of Sorrow rises on your side. Stores up to 8 charges. 5 mana · cooldown 1s
- Burst of Pain. Releases every stored Touch of Pain charge at once.
FAbyssal Root
Special: Tentacle Prison every 12s, 6 tentacles sprout around a random ground enemy troop, block the way and attack anyone nearby for 9s.
- Cost
- 260 gold · 450 lumber
- Health
- 900
- Armor
- 5 · Fortified
- Build
- 2s
- Income
- +2.34
- Mana
- 15 (+1/s)
- Tentacle Prison. Every 12s: 6 tentacles sprout around a random ground enemy troop, block the way and attack anyone nearby for 9s. 12 mana · cooldown 12s
YCorrupted Sentinel
Tower: chaos orbs with 70% splash. Regenerates 2 HP/s.
- Cost
- 200 gold · 300 lumber
- Health
- 1500
- Armor
- 5 · Fortified
- Build
- 20s
- Income
- +0.80
- Attack
- Chaos 40–90
- Range
- 800
XEye of Ruin
Legendary special: all enemies lose 6 armor and take +12% spell damage (more than one Eye doesn’t stack).
- Cost
- 500 gold · 1350 lumber · 1 crystal
- Health
- 1300
- Armor
- 5 · Fortified
- Build
- 2s
- Income
- +4.50
- Nearby enemies (radius the whole field): −6 armor, +12% spell damage taken.




