Game modes

The world has been covered by a strange Mist. Dense patches of it are not passable.

The Book of Insight is accessible between campaign missions. In it you can spend Insight to gain new abilities, unlock new pieces and improve the Citadel.

Combat

Every night swarms of horrors will attack the settlement. Every night before the attack red arrows will show the directions of the attacking swarms and a curved bar on top will show the remaining time until they attack. Hovering over the attack direction arrow will list the attacking units. After surviving the first night the horrors will know about the settlement and individual ones can attack during the day as well.

All humans fight from distance. Hovering over a human will display its range.

The number of troops that can be trained is limited by the Military Capacity, which starts at 10 and is increased at the Citadel. A rally point can be set by selected by selecting a building that produces units and right-clicking where newly recruited units should move.

All units have a maintenance cost of 30 Oxygen/min. Units received as reinforcements during a mission do not have maintenance costs.

Each troop has its own preferred height compared to the enemy and will receive increased bonuses when attacking from their preferred height. The amount of health units have depends on game difficulty.

Unit	Enemies hit	Damage	Attack cooldown	Size	Height	Prosperity	Unlock chapter	Cost	Train time	Notes
Iris	1	24	2.3	1	Any	1	2	Free		Automatically returns to the Citadel when her health runs out
Bowman	1	12	2.8	1	High-ground (5m)	1	2	45 Oxygen 60 Wood 1 Minerals 1 Citizen 1 Military	30
Lobber	2	8	2.8	1	Low-ground (0-4m)	1	2	60 Oxygen 60 Wood 4 Minerals 2 Citizen 1 Military	30
Captor	2	4	2.8	1	Low-ground (0-4m)	2	3	60 Oxygen 60 Wood 6 Minerals 2 Citizen 1 Military	39	Attacks slow down horrors

Horrors can also create Broodnests to take control of an area. Broodnests erupt during night or if attacked, releasing horrors. Horrors can also defile an Ancient Beacon, making it impossible to build nearby.

Prosperity

Each settlement has a level of Prosperity, which starts at 1. Once sufficient buildings and pieces have been constructed the Prosperity level can be increased.

Prosperity level 2 requires a Barracks and 50 points. Upgrading costs 360 Oxygen, 195 Wood and 45 Stone.