The Citadel Must Hold

Build a fortress-city, explore a dangerous wilderness, and hold against increasingly deadly Monster Tides. The Citadel Must Hold is a base-building survival RTS where pausable real-time battles, hero-led exploration, and powerful choices shape every game. Grow a settlement around the Citadel Heart. Secure resources, expand production, train soldiers, and surround your city with walls, gates, and defense towers. Every expansion makes you stronger, but pushes your borders farther into dangerous territory and gives you more ground to protect. Send your hero and army into the fog-covered wilderness between Monster Tides. Explore distinct biomes, discover valuable resources, and confront guarded Places of Power. Places of Power threaten nearby holdings with raiding parties until their guardians are defeated. Venture out, clear the site, stop its raids, and choose a powerful reward. These rewards can transform a run: recruit monsters such as Griffins and Drakes to fight for you, strengthen your hero, army, buildings or economy, create permanent battlefield effects, or even reshape the map itself by growing forests and mountains where you choose.