The complete research tree for Azure Isles League, from the Settlement Age through the Empire Age. Shared backbone (visible in all 10 culture trees) culminates in two culture-specific capstones:
- 🌀 Storm Reading
- 🌬 Koru Wind-Sailor
Reading the diagram. Green nodes are priority research targets for typical playthroughs. Orange nodes are the empire-age capstones (only this culture can unlock these). Yellow nodes are this culture's unique buildings — dotted lines show which research they hook into. Solid arrows show research prerequisites.
flowchart TD
%% ================== SETTLEMENT AGE ==================
subgraph SET["🌊 Settlement Age"]
MD[Militia Drill]:::prio
FL[Fletching]:::prio
EP[Efficient Ploughs]
WA["Woodsman's Axes"]:::prio
SM[Standard Measures]
SF[Signal Fires]
SCo[Scout Corps]
CM[Coastal Marks]:::prio
RP[River Pilots]
SW[Skywatching]:::prio
SO[Sacred Offerings]:::prio
CP[Caravan Protocols]
CR[Census Rolls]
end
%% ================== CITY-STATE AGE ==================
subgraph CITY["🏛 City-State Age"]
SP[Spear Discipline]:::prio
ML["Mail & Lamellar"]:::prio
RH[Riding Harness]
MM[Metallurgical Method]
CT[Compound Tools]
BF[Bloomery Furnaces]:::prio
QL[Quarry Levers]
OP[Organized Priesthood]:::prio
FC[Festival Calendar]:::prio
HB[Hull Bracing]:::prio
IS[Insulated Stores]:::prio
SA[Seasonal Almanacs]
ER[Earthworks]
WL[Written Law]
FQ[Foreign Quarter]
SCol[Supply Columns]
end
%% ================== KINGDOM AGE ==================
subgraph KGD["👑 Kingdom Age"]
VC[Veteran Companies]:::prio
SCp[Siege Corps]
MC[Militant Cult]:::prio
SynC[Syncretic Cults]
SOrt[State Orthodoxy]
CG[Cartography]:::prio
NL[Naval Logistics]:::prio
CamS[Campaign Seasoning]:::prio
FD[Formation Doctrine]:::prio
WG[War Gaming]:::prio
NE[Noble Estates]:::prio
TT[Tributary Treaties]:::prio
CoC[Consular Courts]
PrAd[Provincial Administration]
PrM[Precision Mechanics]
GCo[Guild Contracts]
StG[State Granaries]
SFBP["Storm & Firebreak Planning"]
end
%% ================== EMPIRE AGE ==================
subgraph EMP["⚔ Empire Age"]
RC[Retinue Charters]:::prio
IB[Imperial Bureaucracy]
OSN[Open Sea Navigation]:::prio
DL[Divine Legitimacy]:::prio
OrS[Oracle Sanction]
CAF[Catastrophe Forecasting]
ChA[Chemical Arts]
AY[Assembly Yards]
SOI[Sphere of Influence]
RA[Rapid Assault]:::prio
DD[Defensive Depth]
ShC[Shadow Command]
SRd(["🌀 Storm Reading"]):::capstone
KWS(["🌬 Koru Wind-Sailor"]):::capstone
end
%% ================== UNIQUE BUILDINGS ==================
subgraph UB["🏛 Azure Isles League Unique Buildings"]
Aty[Atoll Yard]:::bld
PGh[Pearl Guildhall]:::bld
WlSh[Wavelantern Shrine]:::bld
TdA[Tide Academy]:::bld
RfW[Reef Watchtower]:::bld
end
%% ---------- Military chain ----------
MD --> SP
MD --> ML
FL --> ML
SP --> VC
FL --> VC
ML --> RC
VC --> RC
RC --> SRd
%% ---------- Navigation chain ----------
CM --> HB
RP --> HB
HB --> CG
HB --> NL
CG --> OSN
NL --> OSN
OSN --> SRd
%% ---------- Weather chain ----------
SW --> IS
SW --> SA
IS --> CamS
SA --> CamS
SA --> SFBP
SA --> CAF
IS --> KWS
%% ---------- Religion chain ----------
SO --> OP
OP --> FC
FC --> MC
FC --> SynC
FC --> SOrt
FC --> KWS
MC --> DL
SynC --> DL
SOrt --> DL
DL --> OrS
%% ---------- Strategy chain ----------
SF --> SCol
SCo --> WG
SCol --> FD
FD --> WG
WG --> RA
WG --> DD
WG --> ShC
%% ---------- Politics chain ----------
CR --> WL
WL --> NE
WL --> SynC
WL --> SOrt
WL --> MC
NE --> PrAd
PrAd --> IB
%% ---------- Diplomacy chain ----------
CP --> FQ
FQ --> TT
FQ --> CoC
TT --> SOI
%% ---------- Technology + Production chains ----------
SM --> CT
CT --> MM
CT --> PrM
MM --> ChA
PrM --> ChA
EP --> StG
WA --> QL
QL --> GCo
BF --> AY
GCo --> AY
%% ---------- Building links (dotted) ----------
Aty -.-> HB
PGh -.-> FC
WlSh -.-> MC
TdA -.-> ER
RfW -.-> SF
%% ---------- Styles ----------
classDef prio fill:#d4edda,stroke:#155724,stroke-width:2px,color:#000
classDef capstone fill:#ff9966,stroke:#c00,stroke-width:3px,color:#000
classDef bld fill:#fff3cd,stroke:#856404,stroke-width:1.5px,color:#000
The tree is also available as an interactive Mermaid Live diagram. The link file in _divers/azure_isles_tech_tree_links.txt (where present) provides edit / view-only / PNG / SVG variants. As of writing, only the Fjordborn link file ships in the repository — the others can be regenerated by pasting the diagram source into https://mermaid.live/.
Source: _divers/azure_isles_tech_tree.mmd (Mermaid). Generated 2026-04-30.