Progression
Upgrade a Reinforced Cannon at Eastern Road or later. The branch costs 400 gold after the 180-gold build and 300-gold Level 2 upgrade. Selling refunds 70% of the full 880-gold investment. Earlier-level replays retain their campaign restrictions.
Targeting and impact
The Battery tracks an enemy’s current body position, including flyers, with one projectile per attack. It alternates two muzzle positions. Splash is checked around the actual impact; a dead or newly immune primary target discards the shot.
Combat role
Use its long reach to cover air routes and fast targets. Despite its name, Thunder Battery deals explosive damage and applies no lightning or status effect.
About this entry & sources
Reviewed 20 October 2026. Drawn from the game’s authored catalog and implemented systems. Numbers are base development values; upgrades and encounter tuning may change them.
Game/Models/CannonPresentation.swiftGame/Models/TowerSpecialization.swiftGame/Systems/BattleSimulation.swift
