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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 · 1973 distinct matches · 199 players · 80% of Cortex Geo sea games · team won 53% of 2286 · 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 1973 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 1:11 · 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 · 5 steps
    1. Construction BotCon bot
    2. GraverobberGraverobber ×2
    3. Mex
    4. Construction BotCon bot
    5. 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 · 22 steps
    1. Energy storage
    2. Construction ShipCon ship
    3. Mex
    4. Construction ShipCon ship
    5. Mex
    6. HerringMissile corvette
    7. RiptideFrigatedone 3:27 · typical 4:40
    8. Mex ×2
    9. RiptideFrigate
    10. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    11. Bot LabEat Bot Labreclaimed for its metal
    12. RiptideFrigate
    13. Dragon's TeethDragon's Teeth ×4
    14. Death CavalryDeath Cavalry
    15. Dragon's TeethDragon's Teeth ×5
    16. Radar TowerRadar Tower
    17. Dragon's TeethDragon's Teeth
    18. OppressorDestroyerdone 5:17 · typical 5:55
    19. Dragon's TeethDragon's Teeth
    20. UrchinUrchin
    21. Con turret
    22. Dragon's TeethDragon's Teeth ×3
  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 · 111 steps
    1. Dragon's TeethDragon's Teeth ×3
    2. UrchinUrchin
    3. Dragon's TeethDragon's Teeth ×2
    4. Construction ShipCon ship
    5. Dragon's TeethDragon's Teeth ×3
    6. HerringMissile corvette
    7. Dragon's TeethDragon's Teeth ×2
    8. RiptideFrigate
    9. Dragon's TeethDragon's Teeth
    10. Wind
    11. Mex
    12. Dragon's TeethDragon's Teeth
    13. Wind
    14. RiptideFrigate
    15. Wind ×3
    16. RiptideFrigate
    17. Wind ×2
    18. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    19. Wind
    20. Death CavalryDeath Cavalry
    21. Geothermal PowerplantGeodone 8:09 · typical 8:07
    22. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    23. OppressorDestroyer
    24. Wind ×2
    25. Construction ShipCon ship
    26. GuardGuard
    27. Converter
    28. HerringMissile corvette
    29. Converter
    30. RiptideFrigate
    31. Converter ×2
    32. RiptideFrigate
    33. Converter
    34. RiptideFrigate
    35. Mex
    36. Converter
    37. Wind
    38. Naval Construction Turret
    39. Mex
    40. Converter
    41. Tidal
    42. Death CavalryDeath Cavalry
    43. Advanced ShipyardAdvanced Shipyarddone 10:21
    44. Radar TowerRadar Tower
    45. Wind ×2
    46. Naval Construction Turret
    47. Advanced Metal ExtractorT2 mexdone 10:44 · typical 9:24
    48. Naval Construction Turret
    49. Wind
    50. Naval Construction Turret
    51. Naval Metal Storage
    52. Converter
    53. Advanced Construction SubAdvanced Construction Sub
    54. Mex
    55. Advanced Construction SubAdvanced Construction Sub
    56. Advanced Metal ExtractorT2 mex
    57. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 11:13
    58. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    59. Advanced ShipyardEat Advanced Shipyardreclaimed for its metal
    60. Mex
    61. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    62. Aircraft PlantAircraft Plantdone 11:30
    63. Construction AircraftCon aircraft
    64. Advanced Metal ExtractorT2 mex
    65. HerringMissile corvette
    66. FinchFinch
    67. HerringMissile corvette
    68. Construction AircraftCon aircraft
    69. Mex
    70. HerringMissile corvette
    71. HerculesLight transport
    72. HerringMissile corvette
    73. Construction AircraftCon aircraft
    74. HerringMissile corvette
    75. Construction AircraftCon aircraft
    76. HerringMissile corvette
    77. Construction AircraftCon aircraft
    78. HerringMissile corvette
    79. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    80. HerringMissile corvette ×4
    81. Advanced Metal ExtractorT2 mex
    82. HerringMissile corvette ×7
    83. Advanced Geothermal PowerplantAdvanced Geothermal Powerplantnot finished by 15:00
    84. Naval Construction Turret
    85. Advanced Metal ExtractorT2 mex
    86. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    87. Advanced Metal ExtractorT2 mex
    88. Tidal ×4
    89. Naval Construction Turret
    90. Tidal ×2
    91. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    92. Advanced Metal ExtractorT2 mex
    93. Tidal ×3
    94. Construction AircraftCon aircraft
    95. Tidal ×2
    96. Naval Construction Turret
    97. Tidal
    98. Construction AircraftCon aircraft
    99. Tidal
    100. Naval Construction Turret
    101. Construction AircraftCon aircraft
    102. Naval Construction Turret
    103. Tidal
    104. Construction AircraftCon aircraft
    105. Naval Construction Turret
    106. Tidal
    107. Con turret
    108. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    109. Tidal
    110. Naval Construction Turret
    111. Con turret

Counts are medians over the build's games: half of them build more, half fewer. The example game is _X_'s (39 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 75% 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

2286 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039800
2:0092900
3:00156100
4:002865051
5:00406814652
6:005417440231
7:006894905526
8:0085781526891
9:001043024351321
10:001255834711987
11:001509046412760
12:001807260173623
13:002132772174344
14:002486384785190
15:002876897226201
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_

39.0 OS · 15/10/2026

Open source match ↗

2 received units · includes a constructor
500 metal received · 56976 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=2259
Shipyard3:19Middle 50%: 3:02–3:37 · n=2277
Orca4:17Middle 50%: 3:52–4:59 · n=1543
Riptide4:40Middle 50%: 4:09–5:21 · n=2226
Oppressor5:55Middle 50%: 5:13–6:42 · n=2105
Geothermal Powerplant8:07Middle 50%: 7:10–9:25 · n=1542
Advanced Metal Extractor9:24Middle 50%: 8:46–10:21 · n=2003

Played most by

SHOGVN227games of this buildElpoloow178games of this buildsirniho124games of this buildOptimusprimenutt92games of this buildhihimik79games of this build