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Geo sea / Cortex / Economy first / OBSERVED BUILD

Standard geo sea

Cortex Geo sea build order · Supreme Isthmus

The role's default economy-first opening: bot lab then shipyard in the cove, early frigate and destroyer with a sub, taking geo on time before transitioning into a mixed navy for the rest of the game.

Usually shipyard in the cove (98%) · geo on time (83%)

#naval #eco · 1270 distinct matches · 170 players · 55% of Cortex Geo sea games · team won 54% of 1413 · Recently observed

HOW TO PLAY IT

Key timing: Bot Lab by 1:12, Shipyard by 3:17

  1. Open 3 mex into wind, then drop Bot Lab in cove.
  2. Finish Bot Lab, keep teching mex and wind.
  3. Get Shipyard up and start pumping subs and frigates.
  4. Eat the Bot Lab for metal once you have T1 units defending.
  5. Push out submarine, frigate, destroyer to contest sea.
  6. Bring geothermal online and transition toward T2 constructor.

Phase by phase

TYPICAL OF ITS 1270 GAMES · AGAINST STANDARD GEO SEA
  1. 1
  2. 2
  3. 3
  4. 4
PLAY THE OPENING

Follow the example game's first 6:00 step by step: what to build now, what comes next, and where it goes. At 1× it keeps pace with your own game.

  1. 1

    Up to the Bot Lab

    Economy
    • Metal Extractor3Mex
    • Wind Turbine3Wind
    • Wind Turbine2Windfor allies+2 vs standard
    Order
    1. Bot LabBot Lab after 3 mex, 3 winddone ~1:12, middle half 1:08–1:21

    By 0:55 in all: 3 mex · 3 wind

    The example game in this phase · 3 steps
    1. Mex ×3
    2. Wind ×4
    3. Bot LabBot Labdone 1:12 · typical 1:12
  2. 2

    Bot Lab to Shipyard

    Economy
    • Metal Extractor1Mex
    • Wind Turbine2Wind
    Order
    1. ShipyardShipyard after 4 mex, 4 wind, 1 energy storagedone ~3:19, middle half 3:02–3:38
    Builders
    • Graverobber3 Graverobber
    • Construction Bot3 Con bot
    Army
    • Grunt1 Grunt

    Some games also: con turret (47%) · trasher (40%) · energy storage (38%)

    By 2:54 in all: 4 mex · 4 wind · 1 energy storage

    The example game in this phase · 5 steps
    1. Construction BotCon botfor Beach sea
    2. GraverobberGraverobber ×2
    3. Mex
    4. Construction BotCon bot
    5. ShipyardShipyarddone 2:31 · typical 3:19
  3. 3

    Shipyard to 5:00

    Economy
    • Metal Extractor4Mex
    Order
    1. Bot LabEat Bot Lab
    Builders
    • Construction Ship1 Con ship
    Army
    • Guard1 Guard
    • Riptide2 Frigate
    • Orca1 Submarine
    • Herring1 Missile corvette
    Other
    • Radar Tower1 Radar Tower

    Some games also: wind (48%) · gunboat (44%) · destroyer (43%) · converter (40%) · con turret (31%)

    By 5:00 in all: 8 mex · 6 wind · 1 energy storage · 1 con turret

    The example game in this phase · 21 steps
    1. GruntGrunt
    2. Construction ShipCon ship
    3. Energy storage
    4. Mex
    5. Radar TowerRadar Tower
    6. Construction ShipCon ship
    7. Mex
    8. Wind
    9. OppressorDestroyerdone 3:59 · typical 5:58
    10. Wind
    11. Mex
    12. Wind ×3
    13. Naval Construction Turret
    14. Mex
    15. HerringMissile corvette
    16. Wind
    17. Mex
    18. RiptideFrigatedone 4:53 · typical 4:46
    19. Bot LabEat Bot Labreclaimed for its metal
    20. GuardGuard
    21. RiptideFrigate
  4. 4

    5:00 to 10:00

    Economy
    • Metal Extractor2Mex
    • Wind Turbine6Wind−8 vs standard
    • Energy Converter3Converter+3 vs standard
    Order
    1. Geothermal PowerplantGeo after 9 mex, 9 wind, 2 converterin 78% of games
    Builders
    • Construction Turret1 Con turret
    • Death Cavalry2 Death Cavalry
    • Construction Ship1 Con ship
    Army
    • Guard2 Guard
    • Riptide5 Frigate
    • Herring2 Missile corvette

    Some games also: Thistle (41%) · submarine (31%) · Urchin (30%)

    By 10:00 in all: 10 mex · 13 wind (standard 21) · 1 geo · 4 converter (standard 2) · 1 energy storage · 2 con turret

    The example game in this phase · 77 steps
    1. RiptideFrigate
    2. Naval Construction Turret
    3. Con turret
    4. Death CavalryDeath Cavalry
    5. Mexfor Beach sea
    6. RiptideFrigate
    7. Mex
    8. RiptideFrigate
    9. Mexfor Beach sea
    10. UrchinUrchin
    11. RiptideFrigate
    12. Death CavalryDeath Cavalry
    13. Geothermal PowerplantGeodone 7:53 · typical 8:13
    14. RiptideFrigate
    15. UrchinUrchin
    16. Death CavalryDeath Cavalry
    17. HerringMissile corvette ×3
    18. Death CavalryDeath Cavalry
    19. Converter
    20. Advanced Metal ExtractorT2 mexdone 8:58 · typical 9:24
    21. UrchinUrchin
    22. Converter
    23. Mex
    24. HerringMissile corvette
    25. Converter ×2
    26. Death CavalryDeath Cavalry
    27. Naval Construction Turret ×2
    28. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    29. HerringMissile corvette
    30. Naval Construction Turret ×2
    31. Advanced Metal ExtractorT2 mex
    32. Tidal ×2
    33. Mex
    34. Tidal ×6
    35. Naval Energy Storage
    36. Seaplane PlatformSeaplane Platformdone 9:49
    37. Advanced Metal ExtractorT2 mex
    38. Dam BusterSeaplane bomber
    39. Mex
    40. Dam BusterSeaplane bomber ×5
    41. Tidal ×2
    42. Advanced Metal ExtractorT2 mex
    43. Tidal
    44. Dam BusterSeaplane bomber
    45. Tidal ×3
    46. Construction SeaplaneConstruction Seaplane
    47. WatcherRadar plane
    48. Advanced ShipyardAdvanced Shipyarddone 12:31
    49. Advanced Metal ExtractorT2 mex
    50. Naval Metal Storage
    51. Advanced Construction SubAdvanced Construction Sub
    52. Vehicle PlantVehicle Plantdone 12:52
    53. PathfinderPathfinder
    54. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 13:20
    55. PathfinderPathfinder ×2
    56. Construction VehicleCon vehicle
    57. Advanced Metal ExtractorT2 mex
    58. Construction VehicleCon vehicle ×4
    59. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    60. Construction VehicleCon vehicle ×2
    61. DespotBattleshipnot finished by 15:00
    62. Black HydraBlack Hydranot finished by 15:00
    63. Naval Construction Turret
    64. Radar TowerRadar Tower
    65. Con turret
    66. Radar TowerRadar Tower
    67. Con turret
    68. Naval Construction Turret
    69. Con turret
    70. Radar TowerRadar Tower
    71. Twin GuardTwin Guard
    72. Naval Construction Turret
    73. Con turret
    74. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    75. Naval Construction Turret
    76. Con turret
    77. Mex

Counts are medians over the build's games: half of them build more, half fewer. The example game is _X_'s (40 OS, 13/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:41 · in 75% of games

You get

  • Finch1 Finch from Airfirst at 1:52 · in 83% of games
  • Hercules1 Light transport from Airfirst at 2:00 · in 77% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 7:42 · in 90% of games

How it plays out

Typical game of this build, running totals by minute

Metal produced

010k20k30k
0:005:0010:0015:00

metal

Enemy metal destroyed

05k10k
0:005:0010:0015:00

metal

Own metal lost

02.5k5k7.5k
0:005:0010:0015:00

metal

1413 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039800
2:0092900
3:00155300
4:002865050
5:00405815052
6:005404465250
7:006875920551
8:0085571551910
9:001039924551343
10:001255235432041
11:001514246792801
12:001819060503692
13:002150672774461
14:002526386485371
15:002910799476381
WHAT THE NUMBERS SAY

This is the role's own baseline, winning a bit over half its games with steady eco scaling and sea trades roughly matching losses.

  • + Team wins slightly over half of games played.
  • + Metal production scales from ~4k to ~29.5k by 15:00.
  • − Own metal lost climbs to 6875 by 15:00, matching kills closely.
  • − T2 factory only reached in 40% of games, limiting late power.
THE EXAMPLE YOU ARE READING

_X_

40.2 OS · 13/10/2026

Open source match ↗

4 received units · includes a constructor
851 metal received · 80622 energy received

Allied construction assistance is unknown. Timings are observations, not a promise of solo reproducibility.

Typical milestones

Bot Lab1:12Middle 50%: 1:08–1:21 · n=1404
Shipyard3:19Middle 50%: 3:02–3:38 · n=1408
Orca4:20Middle 50%: 3:51–5:01 · n=918
Riptide4:46Middle 50%: 4:11–5:29 · n=1371
Oppressor5:58Middle 50%: 5:13–6:47 · n=1321
Geothermal Powerplant8:13Middle 50%: 7:13–9:26 · n=1346
Advanced Metal Extractor9:24Middle 50%: 8:48–10:21 · n=1244

Played most by

Elpoloow113games of this buildhihimik67games of this buildSHOGVN59games of this buildPRO_Rerory52games of this buildAlphacure50games of this build