Citadel Anew is an engaging action game designed for Windows, where players establish and defend a base on an island map against waves of enemies. The primary objective is to protect the Nexus from destruction while surviving a predetermined number of enemy waves. Players are tasked with strategic planning and resource management to ensure their survival.

In Citadel Anew, players can grow clones to assist in various tasks such as food production, resource collection, weapon manufacturing, and research. However, clones are vulnerable, necessitating the construction of defensive structures like walls and turrets to safeguard them. It is crucial to maintain power for the base, ensure turrets are stocked with ammunition, and manage storage effectively to thrive in this challenging environment.