Citadel Rush: Place & Defend is a strategy game available on Android that challenges players to protect their stronghold against relentless enemy waves. The core gameplay revolves around building a powerful fortress and strategically placing towers to maximize defensive capabilities. Players must adapt their strategies as they encounter increasingly difficult enemies, making unit placement a crucial aspect of gameplay.

The game features a robust upgrade system where players can collect gold to enhance their units and fortifications. This adds a layer of depth to the gameplay, as players must decide how best to allocate resources for optimal defense. With its endless challenge mode, Citadel Rush promises a continuously engaging experience, keeping players on their toes as they defend against tougher foes.