Merge Tower : Idle Fish

Merge identical fish towers to create higher-tier units with stronger stats and special effects. Place towers along lanes to cover key angles and maximize damage against incoming waves. Collect coins and shells during battles and claim idle rewards to keep progressing while offline. Upgrade tower tiers, attack speed, and special skills, and unlock new fish species to expand your strategy. Activate boosters and time your abilities to burst down elite enemies and bosses. Advance through stages, refine your layout, and adapt your merge choices to counter new enemy types.