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Geo sea / Cortex / Economy first / OBSERVED BUILD

Standard geo sea

The role's default economy-first play: bot lab then shipyard in the cove, quick frigate/submarine/destroyer navy to contest sea and hold the coast, transitioning into whatever the sea fight needs.

Usually shipyard in the cove (98%)

#naval #eco · 897 distinct matches · 97 players · 83% of Cortex Geo sea games · team won 52% of 1005 · Recently observed

HOW TO PLAY IT

Key timing: Shipyard by 3:18

  1. Open 3 mex, wind and solar, then Bot Lab.
  2. Get a BP and costal torpedo launcher up before the Shipyard.
  3. Put up Shipyard once you can defend it.
  4. Push out "submarine" and "frigate" to contest the sea.
  5. Add geothermal to fund the fleet transition into "destroyer", "missile corvette".

Phase by phase

TYPICAL OF ITS 897 GAMES
  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
    Order
    1. Bot LabBot Lab after 3 mex, 3 winddone ~1:12, middle half 1:06–1:26

    Some games also: wind for allies (49%)

    By 0:55 in all: 3 mex · 3 wind

    The example game in this phase · 74 steps
    1. Mex ×3
    2. Wind ×7
    3. Energy storage
    4. Wind ×3
    5. Aircraft PlantAircraft Plantdone 2:06
    6. Construction AircraftCon aircraft ×3
    7. Mex ×2
    8. HerculesLight transport
    9. Con turret
    10. HephaestusHeavy transport
    11. Mex ×5
    12. RiptideFrigate ×2done 4:23 · typical 4:35
    13. HerringMissile corvette
    14. ThistleThistle
    15. RiptideFrigate
    16. HerringMissile corvette
    17. ThistleThistle
    18. OrcaSubmarinenot finished by 15:00 · typical 4:19
    19. OppressorDestroyerdone 5:23 · typical 5:51
    20. RiptideFrigate
    21. Radar TowerRadar Tower
    22. RiptideFrigate
    23. HerringMissile corvette
    24. GuardGuard
    25. HerringMissile corvette ×2
    26. OrcaSubmarine
    27. GuardGuard
    28. OrcaSubmarine
    29. GuardGuard
    30. OrcaSubmarine
    31. Mex
    32. OrcaSubmarine
    33. Advanced Metal ExtractorT2 mexdone 8:54 · typical 9:22
    34. OrcaSubmarine
    35. Construction ShipCon ship
    36. HerringMissile corvette ×4
    37. Construction ShipCon ship
    38. Advanced Metal ExtractorT2 mex
    39. HerringMissile corvette
    40. Naval Metal Storage
    41. Death CavalryDeath Cavalry
    42. Mex
    43. Death CavalryDeath Cavalry
    44. Tidal
    45. BeholderBeholder
    46. Mex
    47. Tidal
    48. Advanced Metal ExtractorT2 mex
    49. BeholderBeholder
    50. Construction ShipCon ship
    51. Tidal ×2
    52. Mex
    53. Construction ShipCon ship
    54. BeholderBeholder
    55. Tidal
    56. Con turret
    57. Construction ShipCon ship
    58. Tidal
    59. Construction ShipCon ship
    60. Advanced Metal ExtractorT2 mex
    61. Construction ShipCon ship
    62. Tidal
    63. Construction ShipCon ship ×2
    64. Tidal ×2
    65. Naval Metal Storage
    66. Con turret
    67. Construction ShipCon ship
    68. Tidal
    69. Construction ShipCon ship
    70. Tidal
    71. Con turret
    72. Tidal
    73. Construction ShipCon ship
    74. Bot LabBot Labdone 12:39 · typical 1:12
  2. 2

    Bot Lab to Shipyard

    Economy
    • Metal Extractor1Mex
    • Wind Turbine2Wind
    Order
    1. ShipyardShipyard after 4 mex, 5 wind, 1 energy storagedone ~3:17, middle half 3:03–3:33
    Builders
    • Construction Bot3 Con bot
    • Graverobber2 Graverobber
    Army
    • Grunt1 Grunt

    Some games also: con turret (47%) · trasher (39%) · energy storage (34%) · wind for allies (33%)

    By 2:52 in all: 4 mex · 5 wind · 1 energy storage

    The example game in this phase · 1 step
    1. ShipyardShipyarddone 4:12 · typical 3:17
  3. 3

    Shipyard to 5:00

    Economy
    • Metal Extractor4Mex
    Builders
    • Construction Ship1 Con ship
    Army
    • Riptide2 Frigate
    • Orca1 Submarine
    Other
    • Radar Tower1 Radar Tower

    Some games also: Guard (50%) · wind (48%) · missile corvette (47%) · destroyer (46%) · gunboat (41%)

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

  4. 4

    5:00 to 10:00

    Economy
    • Metal Extractor2Mex
    • Wind Turbine8Wind
    • Energy Converter1Converter
    Builders
    • Construction Turret1 Con turret
    • Death Cavalry2 Death Cavalry
    • Construction Ship1 Con ship
    Army
    • Guard2 Guard
    • Riptide5 Frigate
    • Herring2 Missile corvette
    Other
    • Naval Radar / Sonar Tower2 Naval Radar / Sonar Tower

    Some games also: geo (48%) · Thistle (42%) · submarine (33%)

    By 10:00 in all: 10 mex · 15 wind · 1 geo · 4 converter · 1 energy storage · 2 con turret

    The example game in this phase · 68 steps
    1. Tidal
    2. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    3. Tidal
    4. ThistleThistle
    5. Naval Construction Turret
    6. ThistleThistle
    7. Tidal
    8. Construction ShipCon ship
    9. ThistleThistle
    10. Tidal ×2
    11. ThistleThistle
    12. Tidal
    13. Twin GuardTwin Guard
    14. Tidal
    15. Construction ShipCon ship
    16. Advanced Metal ExtractorT2 mex
    17. Naval Construction Turret
    18. Tidal ×2
    19. GruntGrunt
    20. Twin GuardTwin Guard
    21. Tidal
    22. GruntGrunt
    23. Naval Construction Turret
    24. CastroCastro
    25. Tidal ×2
    26. Con turret
    27. Tidal
    28. GruntGrunt
    29. Tidal
    30. Construction ShipCon ship
    31. Radar TowerRadar Tower
    32. Tidal ×2
    33. Naval Construction Turret
    34. Tidal
    35. GruntGrunt ×2
    36. Tidal
    37. Naval Construction Turret
    38. GruntGrunt
    39. Tidal ×2
    40. GruntGrunt
    41. EradicatorEradicator
    42. Tidal
    43. Construction ShipCon ship
    44. Advanced ShipyardAdvanced Shipyarddone 13:54
    45. GruntGrunt
    46. Tidal ×4
    47. GruntGrunt
    48. WardenWarden
    49. Tidal
    50. GruntGrunt
    51. Advanced Metal ExtractorT2 mex
    52. Tidal ×4
    53. GruntGrunt
    54. Tidal
    55. GruntGrunt
    56. Tidal
    57. WardenWarden
    58. Advanced Construction SubAdvanced Construction Sub
    59. Tidal
    60. GruntGrunt
    61. Tidal ×7
    62. Advanced Construction SubAdvanced Construction Sub
    63. GuardGuard
    64. GruntGrunt
    65. Dragon's MawDragon's Maw
    66. GruntGrunt ×4
    67. Naval Advanced Metal ExtractorNaval Advanced Metal Extractornot finished by 15:00
    68. GruntGrunt ×4

Counts are medians over the build's games: half of them build more, half fewer. The example game is BM_akumar6's (41 OS, 30/08/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:47 · in 73% of games

You get

  • Finch1 Finch from Airfirst at 1:51 · in 82% of games
  • Hercules1 Light transport from Airfirst at 2:00 · in 75% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 7:44 · in 89% 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

1005 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039700
2:0092800
3:00157100
4:002914051
5:00411013052
6:005467440232
7:006953931547
8:0086241570891
9:001051024401344
10:001264436272050
11:001523749202921
12:001815364203827
13:002150674134511
14:002505786485441
15:002879297896342
WHAT THE NUMBERS SAY

Standard Cortex geo sea sits at an even 50% win rate, trading a slower start for a big resource lead by 15:00.

  • + Metal produced hits 28451 by 15:00, well above both front roles
  • + Own metal lost stays far below enemy metal destroyed at every checkpoint
  • − Only 50% team win rate, the lowest of these six builds
  • − T2 factory only completes in 40% of games by 12:53
THE EXAMPLE YOU ARE READING

BM_akumar6

41.2 OS · 30/08/2026

Open source match ↗

2 received units · includes a constructor
585 metal received · 87602 energy received

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

Typical milestones

Bot Lab1:12Middle 50%: 1:06–1:26 · n=999
Shipyard3:17Middle 50%: 3:03–3:33 · n=1000
Orca4:19Middle 50%: 3:53–4:59 · n=686
Riptide4:35Middle 50%: 4:08–5:20 · n=977
Oppressor5:51Middle 50%: 5:08–6:32 · n=912
Geothermal Powerplant8:00Middle 50%: 7:01–8:58 · n=605
Advanced Metal Extractor9:22Middle 50%: 8:45–10:10 · n=861

Played most by

sirniho119games of this buildOptimusprimenutt78games of this buildSHOGVN74games of this buildPRO_Rerory46games of this buildhihimik41games of this build