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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 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 · 993 distinct matches · 101 players · 83% of Cortex Geo sea games · team won 52% of 1114 · 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 993 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 1:07–1:26

    Some games also: wind for allies (49%)

    By 0:55 in all: 3 mex · 3 wind

    The example game in this phase · 6 steps
    1. Mex ×3
    2. Windfor Air
    3. Wind ×3
    4. Windfor Air
    5. Energy storage
    6. Bot LabBot Labdone 1:34 · 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 3:02–3:33
    Builders
    • Construction Bot3 Con bot
    • Graverobber2 Graverobber
    Army
    • Grunt1 Grunt

    Some games also: con turret (46%) · trasher (39%) · energy storage (34%) · wind for allies (32%)

    By 2:51 in all: 4 mex · 5 wind · 1 energy storage

    The example game in this phase · 11 steps
    1. GraverobberGraverobber
    2. Construction BotCon bot
    3. GraverobberGraverobber
    4. Construction BotCon bot
    5. TrasherTrasher
    6. GruntGrunt
    7. GraverobberGraverobber
    8. Construction BotCon bot
    9. Mex
    10. GraverobberGraverobber
    11. ShipyardShipyarddone 3:35 · 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 (49%) · wind (49%) · missile corvette (48%) · destroyer (46%) · gunboat (40%)

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

    The example game in this phase · 17 steps
    1. Con turret
    2. Mex
    3. Construction ShipCon ship
    4. Wind
    5. OrcaSubmarinedone 4:11 · typical 4:19
    6. Mex
    7. Wind
    8. Mex
    9. Wind
    10. RiptideFrigatedone 4:29 · typical 4:35
    11. Wind
    12. Mex
    13. Wind
    14. Radar TowerRadar Tower
    15. RiptideFrigate
    16. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    17. Wind
  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
    • Guard1 Guard
    • Riptide5 Frigate
    • Oppressor2 Destroyer
    Other
    • Naval Radar / Sonar Tower2 Naval Radar / Sonar Tower

    Some games also: geo (47%) · Thistle (40%) · submarine (34%)

    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 · 126 steps
    1. HerringMissile corvette
    2. Converter
    3. Mex
    4. OppressorDestroyerdone 6:08 · typical 5:52
    5. Converter ×2
    6. Radar TowerRadar Tower
    7. Mex
    8. ThistleThistle
    9. Converter
    10. RiptideFrigate
    11. Converter ×2
    12. Wind
    13. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    14. Construction ShipCon ship
    15. Wind ×2
    16. OrcaSubmarine
    17. Converter
    18. Wind
    19. Advanced Metal ExtractorT2 mexdone 8:02 · typical 9:21
    20. Wind ×2
    21. Mex
    22. HerringMissile corvette
    23. Tidal
    24. Wind ×2
    25. OppressorDestroyer
    26. Converter
    27. Wind
    28. Tidal
    29. Mex ×2
    30. Naval Construction Turret
    31. Geothermal PowerplantGeodone 10:34 · typical 8:00
    32. Mex
    33. Death CavalryDeath Cavalry
    34. Advanced Metal ExtractorT2 mex
    35. Con turret
    36. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    37. Wind
    38. HerringMissile corvette
    39. OppressorDestroyer
    40. Naval Construction Turret
    41. Wind
    42. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    43. Advanced ShipyardAdvanced Shipyarddone 10:38
    44. Wind
    45. Construction ShipCon ship
    46. Advanced Metal ExtractorT2 mex
    47. Naval Energy Storage
    48. Wind
    49. Construction ShipCon ship
    50. Wind
    51. Tidal
    52. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    53. Tidal
    54. Wind
    55. Tidal
    56. Wind
    57. Advanced Construction SubAdvanced Construction Sub
    58. Advanced Metal ExtractorT2 mex
    59. Tidal ×2
    60. Wind
    61. HerringMissile corvette
    62. Tidal ×2
    63. Wind
    64. PathfinderPathfinder
    65. Tidal
    66. HerringMissile corvette
    67. Tidal
    68. PathfinderPathfinder
    69. HerringMissile corvette
    70. PathfinderPathfinder
    71. HerringMissile corvette
    72. Tidal
    73. Wind
    74. OasisOasis
    75. Tidal ×2
    76. Wind
    77. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 12:18
    78. Tidal
    79. OasisOasis
    80. Tidal ×2
    81. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    82. Tidal
    83. Wind
    84. Tidal
    85. Seaplane PlatformSeaplane Platformdone 13:13
    86. Advanced Metal ExtractorT2 mex
    87. Wind
    88. Tidal
    89. OasisOasis
    90. Tidal ×2
    91. Wind
    92. Naval Construction Turret
    93. Dam BusterSeaplane bomber
    94. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    95. Tidal ×2
    96. Naval Construction Turret
    97. Advanced Metal ExtractorT2 mex
    98. Wind
    99. Tidal
    100. Dam BusterSeaplane bomber
    101. Naval Construction Turret
    102. Tidal
    103. Wind
    104. Tidal
    105. Dam BusterSeaplane bomber
    106. Advanced Geothermal PowerplantAdvanced Geothermal Powerplantnot finished by 15:00
    107. Dam BusterSeaplane bomber
    108. Tidal
    109. Dam BusterSeaplane bomber
    110. Wind
    111. Tidal
    112. Dam BusterSeaplane bomber
    113. PhantasmRadar jammer ship
    114. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    115. Tidal
    116. Dam BusterSeaplane bomber
    117. Wind
    118. MessengerCruise missile shipdone 14:48
    119. Dam BusterSeaplane bomber
    120. Tidal
    121. Dam BusterSeaplane bomber
    122. Tidal
    123. Construction SeaplaneConstruction Seaplane
    124. Tidal
    125. Dam BusterSeaplane bomber
    126. Con turret

Counts are medians over the build's games: half of them build more, half fewer. The example game is Tregan's (39 OS, 02/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:48 · in 71% of games

You get

  • Finch1 Finch from Airfirst at 1:51 · in 83% of games
  • Hercules1 Light transport from Airfirst at 2:00 · in 75% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 7:43 · 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

1114 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039700
2:0092800
3:00156700
4:002899051
5:00410913552
6:005461441242
7:006946931551
8:0086181570906
9:001049724501367
10:001261036252062
11:001521848702893
12:001810063303773
13:002136173614451
14:002499586015363
15:002874196886321
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

Tregan

39.3 OS · 02/10/2026

Open source match ↗

3 received units · includes a constructor
17 metal received · 110661 energy received

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

Typical milestones

Bot Lab1:12Middle 50%: 1:07–1:26 · n=1103
Shipyard3:17Middle 50%: 3:02–3:33 · n=1108
Orca4:19Middle 50%: 3:54–5:00 · n=769
Riptide4:35Middle 50%: 4:07–5:20 · n=1081
Oppressor5:52Middle 50%: 5:08–6:36 · n=1009
Geothermal Powerplant8:00Middle 50%: 7:01–9:02 · n=664
Advanced Metal Extractor9:21Middle 50%: 8:45–10:10 · n=955

Played most by

sirniho123games of this buildSHOGVN94games of this buildOptimusprimenutt84games of this buildPRO_Rerory48games of this buildhihimik41games of this build