Slime Castle - Idle TD is a role-playing idle tower defense game developed by Redtail Games. In this game, the mysterious forest is under attack from invading humans, and it's up to the slime kingdoms to defend it. As a slime chosen by the Slime Sage, players must enhance their abilities through battles, collect legendary equipment, utilize powerful skills, and defeat waves of terrifying enemies to safeguard the peace of the forest.

The game features an auto-battle system with simple idle clicker gameplay, making it easy for players to enjoy a delightful time. With many distinctive maps and different enemies with unique skills, players can explore more secrets of this world. The upgrade system is flexible and diverse, allowing players to build their exclusive fortress. By collecting mighty equipment and leveling up adorable slimes, players can experience an extraordinary adventure.

Slime Castle - Idle TD offers abundant free rewards to claim, eliminating the need to worry about gold. Players can also set battle strategies by combining fortresses, equipment, and controlling enemies, finding the optimal methods to defeat their enemies.

Embark on an epic idle adventure and become the greatest Slime Hero in Slime Castle - Idle TD!