You need to destroy a building level:
Required_Cats = ceil( (Building_Points_at_Level) / (Catapult_Damage) ) Building points per level: ~100 + (previous level × 1.1). One chief reduces loyalty by 20–35 depending on residence/palace level. Formula (simplified): travian offense calculator
: Defender infantry defense = 2000×35 = 70,000 + 1000×45 = 45,000 → total 115,000 With wall: 115,000 × (1 + 2.25) = 115,000 × 3.25 = 373,750 defense You need to destroy a building level: Required_Cats
Wall_Damage = (Attacker_Total_Attack / Defender_Total_Defense) × 10 (levels destroyed) (Heavily simplified – real formula is more complex.) Each catapult hits a random building within target category (e.g., resource, military, wall). Chance to hit intended target = 0.7 - (0.03 × number_of_targetable_buildings) . Chance to hit intended target = 0
Wall_Bonus = (Wall_Level^2) × Unit_Defense_Bonus_Factor Example: Stone wall level 20 → +400% defense for Teuton troops.
