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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%)

#naval #eco · 1967 distinct matches · 199 players · 80% of Cortex Geo sea games · team won 53% of 2279 · 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 1967 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
    • Wind Turbine1Windfor allies
    Order
    1. Bot LabBot Lab after 3 mex, 3 winddone ~1:12, middle half 1:07–1:25

    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 1:10 · 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 3:02–3:37
    Builders
    • Graverobber3 Graverobber
    • Construction Bot3 Con bot
    Army
    • Grunt1 Grunt

    Some games also: con turret (47%) · trasher (39%) · energy storage (36%)

    By 2:52 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 2:32 · typical 3:19
  3. 3

    Shipyard to 5:00

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

    Some games also: missile corvette (48%) · Guard (48%) · wind (48%) · destroyer (43%) · gunboat (39%)

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

    The example game in this phase · 32 steps
    1. Construction BotCon bot
    2. Construction ShipCon ship
    3. GraverobberGraverobber
    4. Mex
    5. Construction ShipCon ship
    6. Mex
    7. HerringMissile corvette
    8. GruntGrunt
    9. RiptideFrigatedone 3:45 · typical 4:40
    10. Energy storage
    11. Mex
    12. Bot LabEat Bot Labreclaimed for its metal
    13. Wind ×2
    14. Mex
    15. RiptideFrigate
    16. Wind
    17. Radar TowerRadar Tower
    18. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    19. Wind
    20. RiptideFrigate
    21. Wind
    22. Dragon's TeethDragon's Teeth
    23. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    24. Wind
    25. Death CavalryDeath Cavalry
    26. Dragon's TeethDragon's Teeth
    27. Wind
    28. Dragon's TeethDragon's Teeth ×3
    29. Wind
    30. Dragon's TeethDragon's Teeth
    31. OppressorDestroyerdone 5:30 · typical 5:55
    32. Dragon's TeethDragon's Teeth
  4. 4

    5:00 to 10:00

    Economy
    • Metal Extractor2Mex
    • Wind Turbine8Wind
    • Energy Converter2Converter
    Order
    1. Geothermal PowerplantGeo after 9 mex, 9 wind, 2 converterin 54% of games
    Builders
    • Construction Turret1 Con turret
    • Death Cavalry2 Death Cavalry
    • Construction Ship1 Con ship
    Army
    • Guard1 Guard
    • Riptide5 Frigate
    Other
    • Naval Radar / Sonar Tower2 Naval Radar / Sonar Tower

    Some games also: Thistle (40%) · submarine (30%)

    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 · 92 steps
    1. Dragon's TeethDragon's Teeth
    2. Construction ShipCon ship
    3. Converter
    4. Dragon's TeethDragon's Teeth ×2
    5. RiptideFrigate
    6. Dragon's TeethDragon's Teeth
    7. Converter
    8. RiptideFrigate
    9. Dragon's TeethDragon's Teeth ×2
    10. RiptideFrigate
    11. Dragon's TeethDragon's Teeth ×2
    12. Death CavalryDeath Cavalry
    13. Dragon's TeethDragon's Teeth ×4
    14. OppressorDestroyer
    15. Dragon's TeethDragon's Teeth
    16. SlingshotSlingshot
    17. Geothermal PowerplantGeodone 10:34 · typical 8:07
    18. Mex
    19. Construction ShipCon ship
    20. RiptideFrigate
    21. HerringMissile corvette
    22. Mex
    23. HerringMissile corvette
    24. Mex
    25. HerringMissile corvette
    26. Aircraft PlantAircraft Plantdone 8:54
    27. Advanced Metal ExtractorT2 mexdone 10:11
    28. HerringMissile corvette
    29. Death CavalryDeath Cavalry
    30. HephaestusHeavy transport
    31. Tidal
    32. UrchinUrchin
    33. HerringMissile corvette
    34. Tidal
    35. Advanced Metal ExtractorT2 mex
    36. RiptideFrigate
    37. Converter
    38. Tidal
    39. RiptideFrigate
    40. Converter
    41. Death CavalryDeath Cavalry
    42. Tidal
    43. ShipyardShipyarddone 11:21
    44. Converter
    45. OppressorDestroyer
    46. Construction ShipCon ship
    47. RiptideFrigate ×4
    48. Converter
    49. Advanced Metal ExtractorT2 mex
    50. RiptideFrigate
    51. Converter
    52. RiptideFrigate
    53. Converter
    54. RiptideFrigate ×2
    55. Tidal
    56. Naval Construction Turret
    57. RiptideFrigate
    58. Tidal
    59. RiptideFrigate
    60. Naval Construction Turret
    61. Tidal
    62. Naval Construction Turret ×2
    63. Advanced Metal ExtractorT2 mex
    64. Naval Construction Turret
    65. RiptideFrigate
    66. Tidal
    67. Naval Construction Turret
    68. OrcaSubmarinedone 13:38 · typical 4:18
    69. Naval Construction Turret
    70. Tidal
    71. Death CavalryDeath Cavalry
    72. Tidal
    73. HerringMissile corvette
    74. Tidal
    75. OrcaSubmarine
    76. Death CavalryDeath Cavalry
    77. HerringMissile corvette
    78. OrcaSubmarine
    79. Tidal
    80. Death CavalryDeath Cavalry
    81. ShipyardShipyarddone 14:18
    82. HerringMissile corvette
    83. SupporterGunboat
    84. OrcaSubmarine
    85. SupporterGunboat
    86. Tidal
    87. SupporterGunboat
    88. RiptideFrigate
    89. SupporterGunboat
    90. RiptideFrigate
    91. SupporterGunboat ×2
    92. RiptideFrigate

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 1:42 · in 73% of games

You get

  • Finch1 Finch from Airfirst at 1:52 · in 81% of games
  • Hercules1 Light transport from Airfirst at 1:59 · in 76% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 7:44 · 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

2279 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039800
2:0092900
3:00156000
4:002865051
5:00406714652
6:005416440231
7:006893905526
8:0085771530891
9:001043024351321
10:001255434711984
11:001508846402761
12:001807160153621
13:002131572124345
14:002484384805186
15:002875597316200
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 ↗

4 received units · includes a constructor
99 metal received · 18105 energy received

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

Typical milestones

Bot Lab1:12Middle 50%: 1:07–1:25 · n=2252
Shipyard3:19Middle 50%: 3:02–3:37 · n=2270
Orca4:18Middle 50%: 3:52–4:59 · n=1540
Riptide4:40Middle 50%: 4:09–5:21 · n=2219
Oppressor5:55Middle 50%: 5:13–6:43 · n=2098
Geothermal Powerplant8:07Middle 50%: 7:10–9:24 · n=1537
Advanced Metal Extractor9:24Middle 50%: 8:46–10:21 · n=1995

Played most by

SHOGVN227games of this buildElpoloow178games of this buildsirniho124games of this buildOptimusprimenutt92games of this buildhihimik79games of this build
Standard geo sea · Cortex Geo sea build order · BAR Build Atlas