Infrastructure
7 buildings
Bunker (HQ)
Your headquarters. Controls building slots and gates the max level of every other building. The most important structure in your settlement.
Max Level 30
No requirements
Per-Level Benefit
Controls total building slots available in the settlement. Also acts as a hard cap — no other building can be upgraded past your Bunker's level.
| Level | Slots | Level Range |
|---|---|---|
| 1–4 | 8 | Starting |
| 5–9 | 12 | Early game |
| 10–14 | 16 | Mid game |
| 15–19 | 20 | Mid-late |
| 20–24 | 24 | Late game |
| 25–29 | 28 | Endgame |
| 30 | 32 | Maximum |
Upgrade Progression
T1 · 1–5
T2 · 6–10
T3 · 11–15
T4 · 16–20
T5 · 21–25
T6 · 26–29
T7 · 30💡
Always upgrade Bunker first. It's the bottleneck for everything. If you can't upgrade a building, your Bunker level is probably the reason.
Warehouse
Sets the maximum storage cap for Scrap, Concrete, and Fuel. Production beyond the cap is wasted.
Max Level 30
Storage Capacity Formula
cap = 1,000 × 1.20 ^ (level - 1)
| Level | Storage Cap |
|---|---|
| 1 | 1,000 |
| 5 | 2,074 |
| 10 | 5,160 |
| 15 | 12,839 |
| 20 | 31,948 |
| 25 | 79,497 |
| 30 | 197,814 |
Upgrade Progression
T1 · 1–5
T2 · 6–10
T3 · 11–15
T4 · 16–20
T5 · 21–25
T6 · 26–29
T7 · 30⚠️
If your resources hit the cap, you're wasting production. Watch for the orange/red tint in the resource bar — that means you're near or at cap. Either spend resources or upgrade your Warehouse.
Granary
Sets the maximum storage cap for Food. Same formula as Warehouse but only affects Food.
Max Level 30
Storage Capacity Formula
cap = 1,000 × 1.20 ^ (level - 1)
Same values as Warehouse. Food is stored separately because troop upkeep can drain it faster than other resources — having a dedicated cap prevents army starvation during long offline periods.
Upgrade Progression
T1 · 1–5
T2 · 6–10
T3 · 11–15
T4 · 16–20
T5 · 21–25
T6 · 26–29
T7 · 30
Radio Tower
Unlocks alliance membership and increases simultaneous march slots.
Max Level 10Requires Bunker 5
March Slots by Level
| Level | March Slots | Unlocks |
|---|---|---|
| 0 (none) | 1 | Base slot (no Radio Tower) |
| 1–2 | 1 | Join alliances, send support |
| 3–4 | 2 | |
| 5–6 | 3 | |
| 7–9 | 4 | |
| 10 | 5 | Maximum march capacity |
Upgrade Progression
T1 · 1–2
T2 · 3–4
T3 · 5–6
T4 · 7–8
T5 · 9–10💡
More march slots = more simultaneous raids. At 5 marches, you can farm 5 different camps at once. This is the biggest force multiplier for resource income in the mid-game.
Workshop
Unlocks the Research tree. Higher levels gate higher research tiers and unlock advanced military buildings.
Max Level 20
Research Tier Gating
| Workshop Level | Unlocks Research | Also Unlocks |
|---|---|---|
| 2 | Tier 1 (all branches) | |
| 5 | Tier 2 | Sniper Nest (with Training Camp 5) |
| 8 | Tier 3 | |
| 10 | Garage (with Bunker 10) | |
| 12 | Tier 4 | |
| 16 | Tier 5 |
Upgrade Progression
T1 · 1–4
T2 · 5–8
T3 · 9–12
T4 · 13–16
T5 · 17–20
Council Hall
Unlocks additional settlement slots for expanding your empire. Also trains Enforcers for conquering enemy settlements.
Max Level 5Requires Bunker 10
Settlement Slots
| Council Hall Level | Total Settlements | Bunker Req. |
|---|---|---|
| 1 | 2 | Bunker 10 |
| 2 | 3 | Bunker 15 |
| 3 | 4 | Bunker 20 |
| 4 | 5 | Bunker 25 |
| 5 | 6 | Bunker 30 |
Upgrade Progression
T1 · Lv 1
T2 · Lv 2
T3 · Lv 3
T4 · Lv 4
T5 · Lv 5💡
Enforcers are trained here, not at the Training Camp. They're the only unit that reduces settlement loyalty for conquering. You need the Council Hall before you can take enemy settlements.
Trade Post
Enables supply marches to transfer resources between your settlements and allied settlements. Higher levels increase carry capacity and supply speed.
Max Level 20Requires Bunker 5 + Workshop 3
Level Bonuses
| Level | Supply Slots | Carry Bonus | Speed Bonus |
|---|---|---|---|
| 1 | 1 | +0% | +0% |
| 4 | 2 | +15% | +5% |
| 8 | 3 | +35% | +15% |
| 12 | 3 | +55% | +20% |
| 16 | 4 | +75% | +30% |
| 20 | 5 | +100% | +40% |
Requirements
Bunker 5
Workshop 3
Key Mechanics
Supply marches use a separate slot pool from military marches (Radio Tower). Carry capacity is calculated from the escort troops' base carry, multiplied by the Trade Post bonus plus any research bonuses. Allied supply requires the Commerce research "Trade Networks" (level 2).
Upgrade Progression
T1 · 1–4
T2 · 5–8
T3 · 9–12
T4 · 13–16
T5 · 17–20💡
Supply slots are independent from military march slots. You can run 5 supply routes and 5 military marches simultaneously at max level. Pair with Commerce research for even more capacity and speed.
Military
3 buildings
Training Camp
Trains Scouts, Scavengers, and Militia. Higher levels reduce training time by 5% per level.
Max Level 20Requires Bunker 3
Training Speed Bonus
time = base / world_speed / (1 + 0.05 × (level - 1))
| Level | Speed Bonus | Militia (base 120s) |
|---|---|---|
| 1 | 0% | 120s |
| 5 | +20% | 100s |
| 10 | +45% | 83s |
| 15 | +70% | 71s |
| 20 | +95% | 62s |
Trains
👁 Scout
🔧 Scavenger
⚔️ Militia
Upgrade Progression
T1 · 1–4
T2 · 5–8
T3 · 9–12
T4 · 13–16
T5 · 17–20
Sniper Nest
Trains Snipers — glass cannon units with 50 attack. Higher levels reduce training time.
Max Level 20Workshop 5 + Training Camp 5
Training Speed Bonus
Same formula as Training Camp: +5% per level above 1.
Requirements
Workshop 5
Training Camp 5
Trains
🎯 Sniper
Upgrade Progression
T1 · 1–4
T2 · 5–8
T3 · 9–12
T4 · 13–16
T5 · 17–20
Garage
Trains Trucks and War Rigs — vehicle-class units. Higher levels reduce training time.
Max Level 20Workshop 10 + Bunker 10
Requirements
Workshop 10
Bunker 10
Trains
🚛 Truck (hauler)
💀 War Rig (heavy assault)
Upgrade Progression
T1 · 1–4
T2 · 5–8
T3 · 9–12
T4 · 13–16
T5 · 17–20💡
Trucks are farming machines. At 200 carry capacity each, a handful of Trucks dramatically increases your loot per raid. War Rigs are expensive endgame units — don't rush them.
Defense
2 buildings
Barricade Wall
Adds a percentage defense bonus to all troops defending your settlement.
Max Level 20Requires Bunker 3
Defense Bonus
+2% per level (Level 10 = +20%, Level 20 = +40%)
This multiplier applies to ALL defending troops including support troops from allies. It's one of the most efficient defensive investments in the game because it scales with army size.
Upgrade Progression
T1 · 1–4
T2 · 5–8
T3 · 9–12
T4 · 13–16
T5 · 17–20💡
A Level 10 Wall effectively makes your 100 Militia fight like 120. Combined with the Fortifier research branch, walls can make your settlement extremely expensive to attack.
Watchtower
Reveals details about incoming attacks. Higher levels show more information.
Max Level 20Requires Bunker 5
Intel Tiers
| Level | Information Revealed |
|---|---|
| 0 (none) | No warning — attacks arrive unannounced |
| 1–5 | Attack incoming + arrival time |
| 6–10 | Above + total troop count |
| 11–15 | Above + unit type breakdown |
| 16–20 | Above + exact quantities + attacker identity |
Upgrade Progression
T1 · 1–4
T2 · 5–8
T3 · 9–12
T4 · 13–16
T5 · 17–20⚠️
Without a Watchtower, you are blind. Build one as soon as your beginner protection expires. Even Level 1 gives you advance warning to prepare defenses or call for allied support.
Resource
4 buildings · multiple allowed
Scrapyard
Produces Scrap — the primary construction resource. Build multiple for higher total production.
Max Level 30Multiple Allowed
Production Formula
rate = 100 × 1.12 ^ (level - 1) per hour
| Level | Per Hour | Per Day |
|---|---|---|
| 1 | 100 | 2,400 |
| 5 | 157 | 3,770 |
| 10 | 277 | 6,648 |
| 15 | 489 | 11,726 |
| 20 | 862 | 20,680 |
| 25 | 1,520 | 36,480 |
| 30 | 2,678 | 64,286 |
Production rates are multiplied by the world speed. Two Level 10 Scrapyards produce 554/hr — more than a single Level 15 (489/hr), and at lower total cost. Multiple lower-level buildings are often more efficient than one high-level building.
Upgrade Progression
T1 · 1–5
T2 · 6–10
T3 · 11–15
T4 · 16–20
T5 · 21–25
T6 · 26–29
T7 · 30
Quarry
Produces Concrete. Same production formula as Scrapyard.
Max Level 30Multiple Allowed
Same production rates as Scrapyard. Concrete is heavily used in defensive buildings (Barricade Wall) and advanced structures.
Upgrade Progression
T1 · 1–5
T2 · 6–10
T3 · 11–15
T4 · 16–20
T5 · 21–25
T6 · 26–29
T7 · 30
Refinery
Produces Fuel. Required for advanced buildings and vehicle units.
Max Level 30Requires Bunker 3Multiple Allowed
Same production formula. Fuel is the scarcest resource in the early game — it's not needed for basic buildings but becomes critical for Snipers, Trucks, War Rigs, and research. Build a Refinery by Bunker 5.
Upgrade Progression
T1 · 1–5
T2 · 6–10
T3 · 11–15
T4 · 16–20
T5 · 21–25
T6 · 26–29
T7 · 30
Farm
Produces Food. Essential for troop upkeep — troops desert if Food runs out.
Max Level 30Multiple Allowed
Food is unique: it's both a production resource and a consumption resource. Every troop eats Food per hour. Your net Food rate (production minus upkeep) determines whether your army is sustainable.
Upgrade Progression
T1 · 1–5
T2 · 6–10
T3 · 11–15
T4 · 16–20
T5 · 21–25
T6 · 26–29
T7 · 30⚠️
If net Food goes negative and Food hits 0, troops desert at 10% per cron tick. Always maintain enough Farms to support your army. Check the Food Balance in the settlement sidebar — if it's red, build more Farms immediately or dismiss excess troops.
Building Dependency Tree
| Building | Requires |
|---|---|
| Bunker | None (always available) |
| Warehouse, Granary, Scrapyard, Quarry, Farm | None |
| Training Camp | Bunker 3 |
| Barricade Wall | Bunker 3 |
| Refinery | Bunker 3 |
| Watchtower | Bunker 5 |
| Radio Tower | Bunker 5 |
| Trade Post | Bunker 5 + Workshop 3 |
| Sniper Nest | Workshop 5 + Training Camp 5 |
| Council Hall | Bunker 10 |
| Garage | Workshop 10 + Bunker 10 |