**? Welcome to Merge Nightmare - Idle Impostor: Defend Your Castle! ?** Prepare yourself for an epic adventure in **Merge Nightmare - Idle Impostor**, a captivating 3D hyper-casual game where rainbow monsters must protect their castle from invading humans and relentless enemies! Will you rise to the challenge and defend your treasures? **? Build Your Monster Army:** In this whimsical world, it’s not just about defense; it’s about strategy! Merge two monsters to create powerful new allies capable of fending off intruders. Each merge unlocks a stronger creature, enhancing your defensive capabilities and ensuring your treasures remain safe! **⚔️ Upgrade and Dominate:** Strengthen your monster army by upgrading their movement speed, attack power, and attack speed. As you progress through countless levels, you'll face increasingly difficult challenges. Stay ahead of your enemies by continuously improving your monsters and their skills! **?️ Interactive Gameplay:** With intuit...