Covenant KeepMain hall. Trains Engineers, takes gold and timber, and researches the Stronghold and Citadel tiers. | 385g 185t | T1 · K | Covenant Engineer | Upgrade to Stronghold, Upgrade to Citadel | — |
GranarySupply. Raises your army cap by 8. | 80g 20t | T1 · G | — | — | — |
BarracksTrains Vanguards, Scouts, Arbalests and Skyguards. Build add-ons right beside it to unlock more: Armory (Knights, Juggernauts), Arcanum (casters), Siege Works (Bolt Carts, Trebuchets). | 130g 50t | T1 · B | Covenant Vanguard, Royal Guard, Covenant Scout, Arbalest, Storm Arbalest, Skyguard, Knight-Errant, Steam Juggernaut, Battlemage, Chaplain, Court Wizard, Bolt Cart, Trebuchet | — | Covenant Keep |
ForgeResearches weapon and armour upgrades, plus Masonry (tougher towers and walls) and Cannon Rounds (tower damage and range). | 140g 60t | T1 · F | — | Tempered Blades, Riveted Plate, Masonry, Cannon Rounds | Covenant Keep |
TimberworksTimber drop-off near forests; researches faster wood cutting. | 120g 0t | T1 · T | — | Improved Saws | Covenant Keep |
Guard TowerDefensive tower that shoots nearby enemies. Garrison up to 4 supply of infantry inside for +5 damage each (right-click it with infantry). Cheap and tough; Masonry and Cannon Rounds improve it. | 77g 56t | T1 · W | — | — | Timberworks |
Hall of ValorTrains your hero, the Marshal, and revives him when he falls. | 180g 50t | T1 · L | Marshal Aldric Venn, High Arbiter Seraphine Vale | — | Covenant Keep |
| ArmoryBarracks add-on: build it right beside a Barracks and that Barracks can train Knight-Errants and (at the Citadel) Steam Juggernauts. | 83g 45t | T1 · A | — | — | Barracks |
Flak TowerAnti-air tower. Long range against flyers only. | 77g 56t | T1 · Y | — | — | Barracks |
Stone WallWall segment. Blocks movement; shift-click to place several. Cheap and tough against everything but siege. | 4g 11t | T1 · Z | — | — | — |
Iron GateGate. A wall that opens by itself for your side (allies beside it, no enemy near) and shuts behind them. | 14g 21t | T1 · V | — | — | — |
ArcanumTier 2 Barracks add-on: build it right beside a Barracks and that Barracks can train Battlemages, Chaplains and Court Wizards. | 90g 53t | T2 · N | — | Arcane Attunement | Upgrade to Stronghold |
Siege WorksTier 2 Barracks add-on: build it right beside a Barracks and that Barracks can build Bolt Carts and (at the Citadel) Trebuchets. | 113g 83t | T2 · X | — | Reinforced Frames | Upgrade to Stronghold |
WorkshopTier 2. Builds Bolt Carts. | 170g 140t | T2 · P | Bolt Cart | — | Upgrade to Stronghold |
Gyro HangarTier 2. Builds Gyrocopters. | 170g 140t | T2 · H | Gyrocopter | — | Upgrade to Stronghold |
Gryphon AerieTier 3. Raises War Balloons and the mythic Gryphon Lord. | 260g 210t | T3 · R | War Balloon, Gryphon Lord | — | Upgrade to Citadel |