Terrain

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Every region on the map carries one terrain tag. Terrain decides which of the mod's competing land-use chains you may build (farms, irrigated farming, rainfed farming, the four pastoralism chains, qanats, marsh reclamation), and several of them carry a standing penalty.

Terrain	Regions	Builds	Blocks	Effects	Units
Desert	87	9	9	5	—
Floodplains delta	62	5	5	—	—
Forest	96	13	10	1	—
Grassland	116	8	5	—	—
Hills	176	5	8	5	—
Karst terrain	47	4	12	1	—
Mountain valley	187	5	6	5	—
Mountains	122	4	14	9	—
Plateau	91	5	6	—	—
River valley	109	5	5	—	—
Small islands and rocky coast	66	5	10	—	—
Steppe	62	4	11	1	—
Wetlands	78	13	10	6	—

Desert

Regions: Desert

On 87 regions.

Lets you build: 9 building levels: Farms OLD, Farms+1, Farms+2, Farms+3, Farms+4, Subterranean Aquaducts (Crops), Nomad Communal Herding (Husbandry), Water Covenants (Husbandry), Breeding Stock Exchanges (Husbandry)
Blocks: 9 building levels: Large Colony, Canal Network (Crops), Irrigation Aqueducts (Crops), Irrigated Great Estates (Crops), Land Clearance (Crops), Contour Furrows (Crops), Runoff Water Collection (Crops), Crop Rotation (Crops), Great Estates (Crops)
Numeric effects where it is present: public order (law) -4 (Region Information Scroll); military construction time -20% (Region Information Scroll); religious construction time -20% (Region Information Scroll); defensive construction time -20% (Region Information Scroll); other construction time -20% (Region Information Scroll)

Regions with this terrain (87)

Aboukaia-Leanitaia · Agraia-Agoubenia · Aidaia · Aisitaia · Aithiopia · Ammonia · Amyrgia · Anaouon · Anatolike Chatramonitaia · Anatolike Omanitis · Apasiakaia · Arabike Aigyptos · Atarantia-Gindania · Attasia · Aualitaia · Azania · Boreia Libya · Boreia Minaia · Boreia Trogodytike · Chaldaia · Chatriaia · Chattenia · Chaurania · Deire · Deutera Oasis · Dodekaschoinos · Drangiane · Entos Smyrnophoros · Erythra Thalassa · Eudaimon Arabia · Gaetulia · Gaetulia Septentrionalis · Garamantia · Garamantia Occidentalis · Garamantia Orientalis · Gedrosia · Gerrhaia · Gusan · Heroon Kolpos · Hesperos Arabia · Hesperos Chattenia · Hesperos Kyrenaike · Ikaros · Iobaritaia · Kamuk · Kassanitis · Katabathmos · Katharrheia · Kattabaneia · Kauchabenia · Lechienia · Macaea · Machlya · Marmarike · Martenia-Orchenia · Melanogaetulia · Mpraysnrarqak · Musulamia · Nasamonia · Nigiria Occidentalis · Notia Libya · Notia Sarakenia · Notios Dodekaschoinos · Noubaia · Omanitis · Ottorochora · Palmyrene · Paralia Chaldaia · Parnia · Parthia · Pedeme · Pharusia · Phazania · Prote Oasis · Psyllia · Qarnawu · Rhaabenia-Masania · Rhambaia · Sarakenia · Suburporia · Syrtis · Taokene · Triakontaschoinos · Trogodytike · Tsendzot · Xandia-Paria · Zygantia-Zauecia

Floodplains delta

Regions: Floodplains delta

On 62 regions.

Lets you build: 5 building levels: Open Field Pasturing (Husbandry), Enclosures (Husbandry), Breeding Farms (Husbandry), Great Droveways (Husbandry), Livestock Estates (Husbandry)
Blocks: 5 building levels: Farms OLD, Farms+1, Farms+2, Farms+3, Farms+4

Regions with this terrain (62)

Aborepi · Agalassia · Ambarria · Ambilatria-Andecavia · Anatolike Chorasmene · Assyria · Athribites-Leontopolites Nomoi · Babylonia · Baktriane · Boubastites-Arabia Nomoi · Campania · Chorasmene · Dytike Apolloniatis · Eraviscia · Getaia · Gynaikopolites Nomos · Hermopolites-Kynopolites Nomoi · Hylaia · Indos · Insubria · Insubria Meridionalis · Kaspiane-Ouitia · Kathaia · Kilikia · Koptites-Tentyrites Nomoi · Lazia · Lykopolites-Hypselites Nomoi · Maiandros · Mallia · Mardyenia · Medwi · Memphites-Letopolites Nomoi · Menelaites-Prosopites Nomoi · Mesopotamia · Mousikania · Napa · Nigiria Septentrionalis · Nippour · Nitiobrogia · Orchoe · Oxyrhynchites-Herakleopolites Nomoi · Pandaia · Panopolites-Antaiopolites Nomoi · Parisia · Peri Thebas-Pathyrites Nomos · Portikania · Qart-Khadasht · Saguntia · Saites-Xoites Nomoi · Salluvia · Sebennytes-Bousirites Nomoi · Sedetania · Senonia Septentrionalis · Sibia · Sogdia-Indos · Sopeitheia · Sydrakaia · Themiskyra Pedion · Thinites-Diospolites Mikros Nomoi · Turdetania Centralis · Turdetania Orientalis · Xouthia

Forest

Regions: Forest

On 96 regions.

Lets you build: 13 building levels: Farms OLD, Farms+1, Farms+2, Farms+3, Farms+4, Slash and Burn (Crops), Assart Clearings (Crops), Rotational Grove Fields (Crops), Lowland Deforestation (Crops), Reclaimed Woodland Estates (Crops), Mast Pasturing (Adaptive husbandry), Forest Gardening (Adaptive husbandry), Managed Woodland Pastures (Adaptive husbandry)
Blocks: 10 building levels: Irrigation Ditches (Crops), Basin Irrigation (Crops), Canal Network (Crops), Irrigation Aqueducts (Crops), Irrigated Great Estates (Crops), Land Clearance (Crops), Contour Furrows (Crops), Runoff Water Collection (Crops), Crop Rotation (Crops), Great Estates (Crops)
Numeric effects where it is present: public order (law) -1 (Region Information Scroll)

Regions with this terrain (96)

Adraistaia · Albocensia · Amardokaia-Anariakaia · Ambronia · Anglia · Angrivaria · Artakia · Astia · Audoumbaria · Bastarnia Vetus · Bellovacia · Betasia · Biturigia Meridionalis · Boihaemum · Borouskia-Pagyritaia · Buria · Cantabria · Cantiacia · Careotaea-Stavania · Carnutia · Catenatia · Caulcia-Campsiania · Chaedinia · Chamavia · Chasuaria-Dulgubnia · Chattia · Cheruscia · Coisstobocia · Coisstobocia Transmontana · Coriosolitia · Cornovia Meridionalis · Cosuanetia · Diablintia · Didunia · Dobunnia · Eburonia · Eraviscia Septentrionalis · Estionia · Faliscia · Finnia · Geidumnia · Gutia Orientalis · Haria · Helisia · Helvetia Vetus · Hesperos Getaia · Hillevionia · Hirria · Iapodia · Issedonia · Kounindia · Leucia · Lingonia · Lucensia · Lucensia Meridionalis · Manimia · Marcomannia Vetus · Marsia Vetus · Mattiaca · Mediomatricia · Melanchlainia · Naharvalia · Naskia · Nervia · Neuria · Oretania Orientalis · Otadinia · Petrocoria · Racataea-Racatriaea · Reginia Septentrionalis · Reudignia · Rucinatia · Sassinia · Semnonia · Sidonia Vetus · Siluria Orientalis · Sudenia · Suessionia · Suionia-Sitonia · Tarusatia-Sibusatia · Tauriscia · Teuriohaemum · The Road to Methora · The Road to Palibothra · Thyssagetaia-Iyrkaia · Tubantia · Tulingia-Verbigenia · Turdulia Veterum · Turdulorum Oppida · Ubia Vetus · Variscia · Veltaea · Venedia · Venetia-Aremorica · Volcaea · Zakynthos

Grassland

Regions: Grassland

On 116 regions.

Lets you build: 8 building levels: Open Field Pasturing (Husbandry), Enclosures (Husbandry), Breeding Farms (Husbandry), Great Droveways (Husbandry), Livestock Estates (Husbandry), Nomad Communal Herding (Husbandry), Water Covenants (Husbandry), Breeding Stock Exchanges (Husbandry)
Blocks: 5 building levels: Farms OLD, Farms+1, Farms+2, Farms+3, Farms+4

Regions with this terrain (116)

Adrumet · Ager Gallicus · Ake · Androphagia · Arecomicia · Argippaia · Arvernia Septentrionalis · Ashdud · Ashqalon · Aspis · Atrebatia · Barke · Biturigia · Boia · Boia Occidentalis · Boiotia · Bosporos · Brenaia · Brigantia Orientalis · Bructeria Minor · Calabria · Caletia · Canninefatia Vetus · Cantiacia Orientalis · Catuvellaunia · Catuvellaunia Orientalis · Ceiagisia · Celticia · Cenomania-Eburovicia · Chattuaria · Cornovia · Daucionia · Daunia · Durotrigia · Durotrigia Centralis · Durotrigia Orientalis · Eburonia Orientalis · Elis · Elusatia · Emesene · Epikrateia · Eraviscia Occidentalis · Eraviscia Orientalis · Esuvia · Eudosia · Favonaea-Firaesia · Gortynia · Gutia · Hasta · Hesperos Achaia · Hesperos Georgike Skythia · Histria · Hydaspes · Ikosim · Ivernia Centralis · Ivernia Orientalis · Kallatia · Kaspeiraia · Khalab · Kimmerikos Bosporos · Korokondamitis · Kriou Metopon · Krobyzia · Kyrenaike · Lepqi Adir · Lepqi Zaxyirt · Liksho · Lusitania · Marsignia · Marvingia Vetus · Mauretania Meridionalis · Metapontion · Morinia · Nemetia Vetus · Notia Meroitis · Nuithonia · Otadinia Septentrionalis · Paralia · Peucetia · Pictonia · Piephigia · Pleumoxia-Grudia · Potulatensia · Predavensia · Pyrogeria · Qart-Khadasht Zaxyir · Redonia · Remia · Salamina · Salentinia · Senonia Orientalis · Sensia · Shaxalat · Sirakene · Stenopos · Suardonia · Suessetania · Taras · Taucheira · Tauriscia Centralis · Tauriscia Orientalis · Teuriscia Occidentalis · Teutonia · Thessaliotis · Thraikie Propontis · Tomea · Tranipsia-Melanditaia · Triballia · Tsatsene · Tunesia · Tyragetia · Vaccaea · Venetia Orientalis · Viromandua · Volcaea Orientalis · Woyxat

Hills

Regions: Hills

On 176 regions.

Lets you build: 5 building levels: Subterranean Aquaducts (Crops), Slope Pasturing (Husbandry), Highland Pasturing (Husbandry), Transhumance (Husbandry), Great Transhumance Roads (Husbandry)
Blocks: 8 building levels: Farms OLD, Farms+1, Farms+2, Farms+3, Farms+4, Irrigation Aqueducts (Crops), Irrigated Great Estates (Crops), Great Estates (Crops)
Numeric effects where it is present: public order (law) -1 (Region Information Scroll); public order (law) +5 (Waystations and Garrisons); public order (law) +7 (Permanent Military Garrisons)
Numeric effects it withholds (granted only where it is absent): public order (law) +4 (Waystations and Garrisons); public order (law) +6 (Permanent Military Garrisons)

Regions with this terrain (176)

Abilene · Achaia Phthiotis · Adramitia · Aeduia Occidentalis · Agathyrsia · Aigyssia · Aizanitis · Akarnania · Akragas · Albocensia Orientalis · Amathousia · Anartia Septentrionalis · Anatolike Albania · Anatolike Homeritis · Anatolike Phrygia · Ankon Petra · Ano Troias · Ansamenia · Antheia · Arbia · Arevacia Centralis · Arevacia Septentrionalis · Aromaton Akroterion · Asaia · Attike · Ay-Khol · Balaria · Bastetania Maritima · Bellia Orientalis · Belos · Boihaemum Meridionale · Boihaemum Occidentale · Boihaemum Orientale · Boreia Palaistine · Bracarensia Septentrionalis · Briantike-Korpilike · Brigantia · Buridavensia Meridionalis · Byllionia-Amantia · Caerosia-Paemania · Carpiania · Celticia Meridionalis · Celticia Orientalis · Cessetania · Chalkedonia · Chalkidike · Chrysorrhoas · Condrusia-Segnia · Conia · Contestania · Contestania Orientalis · Cotinia · Cugernia Vetus · Demetaea · Deuriopos-Pelagonia · Dolicheia · Dorylaia · Dumnonia · Dumnonia Meridionalis · Durotrigia Occidentalis · Elymia · Epidamnia · Etruria Meridionalis · Etruria Orientalis · Frentania · Gebal · Haribut · Hercynia · Hirpinia · Histiaia · Idoumaia · Idrias · Ioudaia · Ituna Aestuarium · Kabylia · Kainia · Kardia · Karia · Kaukonia · Kitiy · Klazomenia · Komisene · Korelia · Korinthia · Kroton · Kyrnos · Kyrrhestike · Laietania · Lakonikos Kolpos · Latium · Latmikos Kolpos · Lemovicia · Liburnia Orientalis · Lucania Vetus · Lusitania Orientalis · Maezaeia · Maktarxim · Mamertina · Mandubia-Blannovia · Mania · Marda · Marsyas · Massalike Kontestania · Mastienia · Mauretania · Maxya-Ausea · Megaris · Mese Ariane · Mikra Chersonesos · Molossia · Mosyllia · Mygdonia · Mykale · Mysia · Notia Karmania · Notia Lechienia · Odessia · Onuba · Opountia Lokris · Oxeiane · Oxybia · Paphia · Peiraieus · Pelasgiotis · Pelopeia · Pentria-Carricinia · Phrykonis · Picenum · Pisatis · Pityoussa · Poimandris · Poltymbria · Quadia Vetus · Reginia · Rithymna · Sabaike Aithiopia · Samnium · Saramene · Segobrigia · Shigan · Sikyonia · Sindike · Sinopeia · Sugambria · Swirwakh · Synnadia · Taexalia · Tagia · Tektosagia · Thamoudaia · Thebai · Thynia · Tigurinia-Tougenia · Ting · Tittia · Tlawa · Treveria · Triphylia · Troias · Trokmia · Turdetania Meridionalis · Turdetania Occidentalis · Usipetia Vetus · Vacomagia · Vangionia Vetus · Velzna · Venellia · Vettonia · Volcaea Septentrionalis · Xupon Zaxyir · Yathrib · Zelitis · Zeugma-Euphrates · Zidun · Zumia · Zur

Karst terrain

Regions: Karst terrain

On 47 regions.

Lets you build: 4 building levels: Slope Pasturing (Husbandry), Highland Pasturing (Husbandry), Transhumance (Husbandry), Great Transhumance Roads (Husbandry)
Blocks: 12 building levels: Farms OLD, Farms+1, Farms+2, Farms+3, Farms+4, Basin Irrigation (Crops), Canal Network (Crops), Irrigation Aqueducts (Crops), Irrigated Great Estates (Crops), Runoff Water Collection (Crops), Crop Rotation (Crops), Great Estates (Crops)
Numeric effects where it is present: public order (law) -1 (Region Information Scroll)

Regions with this terrain (47)

Anatolike Isauria · Ano Euphrates · Ardiaia · Arevacia Meridionalis · Boreia Tracheiotis · Brannovicia · Brigantia-Alpes · Cadurcia · Deceanglia · Dioskoridou Nesos · Diotike · Dytike Sikania · Edetania Occidentalis · Epetia-Salonitis · Ergavicia · Etennia-Kotennia · Fosia · Gabalia-Rutenia · Hesperos Triballia · Histria Septentrionalis · Isauria · Ivernia Occidentalis · Kaouia · Liburnia Septentrionalis · Lokroi Epizephyrioi · Mantineia · Marrucinia-Vestinia · Mauretania Orientalis · Megas Pityous · Narensia · Olkinia · Petnelissos · Phaselia · Rauracia-Latobrigia · Sequania · Siluria · Smertaea-Caerenia · Taurike · Tauriscia Occidentalis · Tegeatis · Tolistobogia · Tracheiotis · Tragouria · Turboletia · Tyle · Umbria · Zygia-Achaia

Mountain valley

Regions: Mountain valley

On 187 regions.

Lets you build: 5 building levels: Subterranean Aquaducts (Crops), Slope Pasturing (Husbandry), Highland Pasturing (Husbandry), Transhumance (Husbandry), Great Transhumance Roads (Husbandry)
Blocks: 6 building levels: Farms OLD, Farms+1, Farms+2, Farms+3, Farms+4, Irrigated Great Estates (Crops)
Numeric effects where it is present: public order (law) -1 (Region Information Scroll); public order (law) +5 (Waystations and Garrisons); public order (law) +7 (Permanent Military Garrisons)
Numeric effects it withholds (granted only where it is absent): public order (law) +4 (Waystations and Garrisons); public order (law) +6 (Permanent Military Garrisons)

Regions with this terrain (187)

Adouli · Adramyttenos Kolpos · Agni · Agriania · Aipeia · Akilisene · Alaunia-Genaunia · Albania · Allobrogia · Altiburosh · Ambrakikos Kolpos · Amphaxitis · Anartia · Anartia Orientalis · Anartophractia · Anatolike Dardania · Anatolike Sogdiane · Anatolike Tracheiotis · Andosinia-Aerenosia · Arachosia · Arbelitis · Argolis · Arik · Arinna · Arka · Arvernia · Aspasia · Assakenia · Asturia · Asturia Septentrionalis · Athesia · Ausetania · Autololia · Autrigonia · Auxakitis · Axios · Baliares Maiores · Bardyetia · Bastetania · Bastetania Occidentalis · Bebaxal · Bellia · Beruta · Bigerrionia-Bargusia · Boreia Baktriane · Boreia Paphlagonia · Boreia Labeataia · Bottiaia · Bracarensia · Bruttium · Buridavensia · Calpe · Camertia-Nahartia · Cantabria Meridionalis · Carnia · Catalia · Caucoensia · Cavaria · Cenomania · Chaonia · Cotensia · Dacia · Damashq · Damnonia · Daraea · Darapsia · Dassaretia · Denthelentike · Dirphysia · Ditionia · Edetania · Erigonia · Estwediys · Euboia · Eurymedoneia · Galabria · Gandaritis · Gouraia · Hellas · Hercuniatia · Hesperos Ariane · Hesperos Assakenia · Hesperos Iberia · Hesperos Sophene · Homeritis · Homonadia-Oroandia · Hypios · Hyrkania · Iacetania · Iaxartes · Iberia · Ilercavonia · Ilercavonia Septentrionalis · Ilergetia · Ilergetia Orientalis · Ilvatia · Indicetia · Issikos Kolpos · Kadousia · Kappadokike Kilikia · Karanitis · Kasiane · Kato Kommagene · Kaystros · Kianos Kolpos · Kimiatene · Koilaletia · Kolchis · Kommagene · Koraxia · Kossaia-Mardia · Kydoniatis · Lakonia · Latium Novum · Legaia-Gelaia · Lemannus Inferior · Leuke Akte · Libanophoria · Licatia-Focunatia · Lykia · Lynkestis-Eordaia · Magnesia · Maidia · Makronia · Malaka · Malis-Ainis · Massyas · Massyas Pedion · Mauretania Septentrionalis · Melitene · Mese Kilikia · Messenia · Minoa · Nagran · Nalhan · Noricum · Notia Bithynia · Notia Kolchis · Notia Omanitis · Nroysoqak · Basilike Brenaia · Oreitaia · Orestike Dassaretia · Orgasia · Orobia · Oxos · Pamphylia · Paphlagonia · Paroreia Pisidia · Parthenope · Parthinia · Pasargadaia-Kyrtia · Pedias Atropatene · Phanaroia · Phokis-Doris · Pieria · Pieria-Syria · Pisidia · Pontos · Poseidonia · Qart-Khadasht biShardana · Qudsdo · Raqemo · Ratiariai · Rhagiane · Sabaia · Sabinia-Aequia · Sakaia · Salassia Meridionalis · Salda · Salone · Sapaia-Bistonia · Segusiavia-Ambivaretia · Sintike-Odomantike · Sinus Liburnicus · Sophene · Sordonia · Statiellia-Vagiennia · Teuriscia · Thourioi · Tsenmure · Ubusia · Vettonia Montana · Vocontia · Xupon · Yathil · Ziz

Mountains

Regions: Mountains

On 122 regions.

Lets you build: 4 building levels: Slope Pasturing (Husbandry), Highland Pasturing (Husbandry), Transhumance (Husbandry), Great Transhumance Roads (Husbandry)
Blocks: 14 building levels: Large Colony, Farms OLD, Farms+1, Farms+2, Farms+3, Farms+4, Basin Irrigation (Crops), Canal Network (Crops), Irrigation Aqueducts (Crops), Irrigated Great Estates (Crops), Contour Furrows (Crops), Runoff Water Collection (Crops), Crop Rotation (Crops), Great Estates (Crops)
Numeric effects where it is present: public order (law) -4 (Region Information Scroll); military construction time -20% (Region Information Scroll); religious construction time -20% (Region Information Scroll); defensive construction time -20% (Region Information Scroll); other construction time -20% (Region Information Scroll); public order (law) +5 (Waystations and Garrisons); public order (law) +7 (Permanent Military Garrisons)
Numeric effects it withholds (granted only where it is absent): public order (law) +4 (Waystations and Garrisons); public order (law) +6 (Permanent Military Garrisons)