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Geo sea / Cortex / Economy first / OBSERVED BUILD

Standard geo sea

Cortex Geo sea build order · Supreme Isthmus

Builds a bot lab then shipyard (usually in the cove), eats the bot lab for metal, and pumps out submarines, frigates and destroyers to contest the sea while supporting allies with energy.

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

#naval #eco · 1439 distinct matches · 179 players · 56% of Cortex Geo sea games · team won 54% of 1596 · 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 1439 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 1:09 · 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 ~3:20, middle half 3:02–3:39
    Builders
    • Graverobber3 Graverobber
    • Construction Bot3 Con bot
    Army
    • Grunt1 Grunt

    Some games also: con turret (48%) · trasher (40%) · energy storage (38%)

    By 2:53 in all: 4 mex · 4 wind · 1 energy storage

    The example game in this phase · 6 steps
    1. Construction BotCon bot
    2. GraverobberGraverobber
    3. Construction BotCon bot
    4. Mex
    5. GraverobberGraverobber
    6. ShipyardShipyarddone 2:39 · typical 3:20
  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 (42%) · 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 · 24 steps
    1. Construction BotCon bot
    2. Energy storage
    3. Construction ShipCon ship
    4. Mex
    5. Naval Construction Turret
    6. GraverobberGraverobber
    7. HerringMissile corvette
    8. Mex
    9. GruntGrunt
    10. RiptideFrigatedone 4:03 · typical 4:46
    11. TrasherTrasher
    12. Mex ×2
    13. Radar TowerRadar Tower
    14. RiptideFrigate
    15. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    16. Bot LabEat Bot Labreclaimed for its metal
    17. Dragon's TeethDragon's Teeth ×3
    18. Con turret
    19. Dragon's TeethDragon's Teeth
    20. RiptideFrigate
    21. Dragon's TeethDragon's Teeth ×6
    22. Mex
    23. Death CavalryDeath Cavalry
    24. Dragon's TeethDragon's Teeth ×3
  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 77% of games
    Builders
    • Construction Turret1 Con turret
    • Death Cavalry2 Death Cavalry
    • Construction Ship1 Con ship
    Army
    • Guard2 Guard
    • Riptide5 Frigate
    Other
    • Naval Radar / Sonar Tower2 Naval Radar / Sonar Tower

    Some games also: Thistle (43%) · 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 · 102 steps
    1. Geothermal PowerplantGeodone 6:02 · typical 8:08
    2. Dragon's TeethDragon's Teeth ×2
    3. OppressorDestroyerdone 6:39 · typical 5:59
    4. Dragon's TeethDragon's Teeth ×2
    5. Naval Construction Turret
    6. Dragon's TeethDragon's Teeth ×3
    7. UrchinUrchin
    8. Dragon's TeethDragon's Teeth ×3
    9. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    10. Dragon's TeethDragon's Teeth ×3
    11. Converter ×3
    12. Con turret
    13. Converter ×2
    14. Construction ShipCon ship
    15. Converter
    16. HerringMissile corvette
    17. RiptideFrigate
    18. Advanced Metal ExtractorT2 mexdone 8:45 · typical 9:24
    19. RiptideFrigate
    20. Wind ×3
    21. RiptideFrigate
    22. Wind
    23. Converter
    24. Death CavalryDeath Cavalry
    25. Wind ×2
    26. OppressorDestroyer
    27. Wind ×2
    28. Converter
    29. Advanced Metal ExtractorT2 mex
    30. Construction ShipCon ship
    31. Wind
    32. HerringMissile corvette
    33. Wind
    34. RiptideFrigate
    35. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    36. Wind
    37. RiptideFrigate
    38. Converter
    39. RiptideFrigate
    40. Advanced Metal ExtractorT2 mex
    41. Con turret
    42. Death CavalryDeath Cavalry
    43. OppressorDestroyer
    44. Wind
    45. ThistleThistle
    46. SlingshotSlingshot
    47. ThistleThistle
    48. SlingshotSlingshot
    49. ThistleThistle ×2
    50. SlingshotSlingshot
    51. Construction ShipCon ship
    52. ThistleThistle ×2
    53. SlingshotSlingshot
    54. ThistleThistle ×2
    55. SlingshotSlingshot
    56. ThistleThistle
    57. SlingshotSlingshot
    58. HerringMissile corvette
    59. RiptideFrigate ×2
    60. Tidal
    61. Advanced Construction BotT2 con bot
    62. RiptideFrigate
    63. Tidal ×2
    64. Death CavalryDeath Cavalry
    65. Mex
    66. Tidal
    67. OppressorDestroyer
    68. Tidal
    69. Advanced Metal ExtractorT2 mex
    70. Tidal
    71. Con turret
    72. Naval Construction Turret
    73. Tidal ×2
    74. Naval Construction Turret
    75. Tidal
    76. Naval Energy Converter
    77. Construction ShipCon ship
    78. Naval Construction Turret
    79. Tidal
    80. Naval Construction Turret
    81. Tidal
    82. Geothermal PowerplantGeo
    83. Naval Energy Converter
    84. HerringMissile corvette
    85. Wind
    86. Naval Construction Turret
    87. CompassRadar bot
    88. RiptideFrigate
    89. Wind
    90. Naval Construction Turret
    91. Tidal ×2
    92. Advanced Metal ExtractorT2 mex
    93. RiptideFrigate
    94. Wind
    95. Naval Construction Turret
    96. Tidal
    97. Naval Energy Converter
    98. RiptideFrigate
    99. Tidal
    100. Wind
    101. Naval Construction Turret
    102. Tidal

Counts are medians over the build's games: half of them build more, half fewer. The example game is _X_'s (40 OS, 15/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:40 · in 77% of games

You get

  • Finch1 Finch from Airfirst at 1:51 · in 82% 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

05k10k15k
0:005:0010:0015:00

metal

Own metal lost

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

metal

1596 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039800
2:0092900
3:00156100
4:002870051
5:00406315052
6:005410465250
7:006887921545
8:0085601530891
9:001042424281314
10:001257234531999
11:001518145552751
12:001823959633658
13:002162972434413
14:002537686535288
15:0029244100046357
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_

40.0 OS · 15/10/2026

Open source match ↗

17 received units · includes a constructor
673 metal received · 63014 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=1587
Shipyard3:20Middle 50%: 3:02–3:39 · n=1591
Orca4:20Middle 50%: 3:51–5:01 · n=1037
Riptide4:46Middle 50%: 4:11–5:27 · n=1546
Oppressor5:59Middle 50%: 5:15–6:48 · n=1498
Geothermal Powerplant8:08Middle 50%: 7:10–9:25 · n=1521
Advanced Metal Extractor9:24Middle 50%: 8:47–10:22 · n=1411

Played most by

Elpoloow162games of this buildhihimik74games of this buildAlphacure71games of this buildSHOGVN61games of this buildPRO_Rerory52games of this build
Standard geo sea · Cortex Geo sea build order · BAR Build Atlas