Reach player level 36 to unlock 16 new features in Castle Defense.
Acid Crawlers coat your units in corrosive acid — reducing their armor by 20% for 5 seconds! Deploy Alchemist to neutralize the acid instantly and prevent armor loss. Kill a crawler while your Alchemist has it neutralized for +16G. 3 types scale from slime to colossus!
Where: Fight ▸ Acid Crawlers
The Sea Titan emerges from the depths and immediately begins pulling you into a devastating trap — at 70% HP it summons TWO massive Kraken Arms that wrap around the path! While even ONE arm is alive, the Sea Titan itself becomes completely immune to all damage. You must destroy BOTH arms before you can continue damaging the boss. Harpoon Tower units fire massive hooks specifically designed to tear Kraken Arms apart. Each arm destroyed earns +48G harpoon gold. Kill the arms FAST!
Where: Fight ▸ Sea Titan
The Thunder Hydra attacks with both heads independently — each one fires chain lightning at your towers simultaneously! Double the attacks means double the pressure. Destroy one head and the lightning temporarily halves, but the remaining head goes into a frenzy. Electric Rod units can deflect the chain lightning harmlessly to the ground before it hits, protecting your towers. Each deflected rod earns +47G shock bonus. An endgame boss demanding careful positioning and rod investment!
Where: Fight ▸ Thunder Hydra
When first killed, the Eternal Lich resets to 80% HP! Soul Gem units prevent this reset for +55G. Kill it twice or stop the reset.
Where: Fight ▸ Eternal Lich
The Arcane Colossus gains +20% ATK for every 10 enemies that walk through it — stack too high and it becomes nearly unstoppable! Suppression Field towers reset its stacks. +48G/kill.
Where: Fight ▸ Arcane Colossus
The Crystal Nova boss detonates its crystals every 22s in a devastating area burst hitting all towers in range! Shield Mage towers absorb the blast and earn bonus kills. +49G/kill.
Where: Fight ▸ Crystal Nova
Every 22s this colossal undead stomps the ground, cursing all towers in a 4-tile radius and halving their output. Soul Anchor absorbs the curse completely. +55G/kill.
Where: Fight ▸ Death Colossus
Every 20s this molten giant unleashes an inferno blast setting all towers in a 5-tile AoE ablaze for 3s. Frost Cannon is the only thing that douses the flames. +54G/kill.
Where: Fight ▸ Inferno Colossus
The Kraken extends tentacles every 20s grabbing up to 4 towers simultaneously and reducing their fire rate. Cut the tentacles with Lightning Rod. +58G/kill.
Where: Fight ▸ Abyssal Kraken
Every 22s the serpent phases into the void making itself fully immune for 6s. Radiant Spike forces it back before the window expires. +60G/kill.
Where: Fight ▸ Void Serpent
This ancient giant charges at double speed when it hits half HP. Gravity Net is the only tool that slows it back down before it breaks through. +68G/kill.
Where: Fight ▸ Ancient Colossus
Every 25s the Lich raises an impenetrable crystal barrier for 6s — every ranged attack is deflected. Use Sound Wave to shatter the barrier on cue. +74G/kill.
Where: Fight ▸ Crystal Lich
Every 20s the Chaos Titan enters berserk rage — doubling speed and damage for 5s. Order Blade units suppress the rage before it reaches your gate. +130G/kill.
Where: Fight ▸ Chaos Titan
Every 19s the Nightmare Titan projects a fear aura that silences all towers in a 120px radius for 4.5s — total firepower blackout. Place Courage Beacon units to nullify the fear. +135G/kill.
Where: Fight ▸ Nightmare Titan
This golem recovers 5% of its max HP every time it destroys a tower. Life Siphon units drain its life back — keep them alive or the titan becomes unstoppable. +138G/kill.
Where: Fight ▸ Blood Titan
Unit Spirit Cannon