Build by day, defend by night — a survival war against time.

In a world consumed by darkness, you command the last bastion of light. Each day, you have only minutes to chop wood, mine gold, build walls, and train troops. When the sun sinks below the horizon, monsters swarm from six directions — caves, waterways, and wildlands. Can you hold the line for 30 days and see the final dawn?

A full day-night cycle lasts 10 minutes. Sunlight means safety: chop wood, mine gold, hunt for food, construct buildings, upgrade your tech. When darkness falls, enemies surge from all sides — and your fortifications and troop positioning decide whether the fortress survives. Every sunrise is a relief you've earned with blood and steel.

Build your fortress from the ground up.

Construct and upgrade 6 core buildings, each vital to your survival strategy:

• Castle — The heart of the fortress. Upgrading it unlocks new buildings, units, and techtiers.

• Barracks— Training ground for melee units. Warriors and Lancers stand ready.

• Archery Range— Training ground for Archers. Ranged fire support at your command.

• Monastery — Training ground for Monks. Healing and dispel make the difference in prolonged battles.

• Watchtower— Defensive fortification. Station Archers here for massive attack bonuses.

• Cottage — Expands population cap, allowing you to field larger armies.

Command five unit types and master the art of war

Train and deploy 5 distinct units, each with unique upgrade paths and combat abilities:

Pawn：Handles resource gathering and fortress repairs. Able to switch between four specialized jobs: Lumberjack, Miner, Hunter and Repairman, serving as your core logistics backbone.

Warrior：Frontline damage dealer with Block and Combo abilities.

Archer：Ranged damage unit, deployable atop watchtowers.

Lancer：Garrison defensive troop, featuring damage reduction and thorns (damage reflection) passive effects.

Monk：Healer support, capable of healing allies and dispelling debuffs.