Reach player level 3 to unlock 21 new features in Castle Defense.
Spend essence on a branching tech tree for permanent combat & economy bonuses.
Where: Heroes ▸ Research
Achievements · Quick Battle · Win Streak · Battle History · Daily Contracts · Resource Stockpile · Tower Upgrade Preview · Castle Mood · Formations Display · Battle Timer · Unit Upgrade Path · Loot Drop Log · Spell Cooldown Tracker · Combat Efficiency · Enemy Drop Table · Army Morale · Siege Supplies · Loot Chest Opener · Monster Wave Forecast · Battle Prophecy