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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 · 977 distinct matches · 100 players · 83% of Cortex Geo sea games · team won 52% of 1096 · 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 977 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 · 4 steps
    1. Mex ×3
    2. Solar
    3. Wind ×2for Air
    4. 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, 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

    The example game in this phase · 12 steps
    1. Wind
    2. GraverobberGraverobber
    3. Construction BotCon bot
    4. Wind ×2
    5. Construction BotCon bot ×2
    6. GraverobberGraverobber
    7. GruntGrunt
    8. GraverobberGraverobber
    9. GruntGrunt
    10. GraverobberGraverobber
    11. GruntGrunt
    12. ShipyardShipyarddone 3:00 · 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 (48%) · 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. Energy storage
    2. Construction ShipCon ship
    3. SupporterGunboat ×2
    4. Con turret
    5. SupporterGunboat ×3
    6. Mex
    7. OrcaSubmarinedone 4:24 · typical 4:19
    8. Mex
    9. Converter
    10. Mex ×2
    11. Converter
    12. RiptideFrigatedone 4:44 · typical 4:35
    13. Converter
    14. Mex
    15. RiptideFrigate
    16. Converter
    17. GuardGuard
  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
    • 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 · 128 steps
    1. HerringMissile corvette
    2. Wind ×2
    3. GuardGuard
    4. OppressorDestroyerdone 6:30 · typical 5:51
    5. Wind ×2
    6. Mex
    7. Wind
    8. Radar TowerRadar Tower
    9. Mex ×2
    10. Wind
    11. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    12. ThistleThistle
    13. Death CavalryDeath Cavalry
    14. Wind
    15. GuardGuard
    16. RiptideFrigate
    17. Wind
    18. RiptideFrigate
    19. Wind
    20. Radar TowerRadar Tower
    21. HerringMissile corvette
    22. ThistleThistle
    23. OppressorDestroyer
    24. Geothermal PowerplantGeodone 10:45 · typical 7:59
    25. RiptideFrigate
    26. Radar TowerRadar Tower
    27. RiptideFrigate
    28. OppressorDestroyer
    29. Naval Construction Turret ×2
    30. UrchinUrchin
    31. HerringMissile corvette
    32. Advanced Metal ExtractorT2 mexdone 10:53 · typical 9:22
    33. RiptideFrigate
    34. Mex
    35. RiptideFrigate
    36. SlingshotSlingshot
    37. OppressorDestroyer
    38. Tidal
    39. SlingshotSlingshot
    40. HerringMissile corvette
    41. Tidal
    42. RiptideFrigate
    43. Tidal
    44. RiptideFrigate
    45. Tidal
    46. OppressorDestroyer
    47. Tidal
    48. Advanced Metal ExtractorT2 mex
    49. HerringMissile corvette
    50. Tidal
    51. RiptideFrigate
    52. Tidal
    53. Wind
    54. RiptideFrigate
    55. Tidal
    56. OppressorDestroyer
    57. Tidal
    58. Wind
    59. Advanced Metal ExtractorT2 mex
    60. Con turret
    61. HerringMissile corvette
    62. Construction ShipCon ship
    63. Seaplane PlatformSeaplane Platformdone 12:33
    64. Con turret
    65. Wind
    66. Con turret
    67. Construction ShipCon ship
    68. Wind ×2
    69. Mex
    70. SupporterGunboat
    71. Wind ×2
    72. SupporterGunboat
    73. Wind
    74. SupporterGunboat
    75. Wind
    76. Death CavalryDeath Cavalry
    77. Dam BusterSeaplane bomber
    78. Wind
    79. Death CavalryDeath Cavalry
    80. Wind ×2
    81. Dam BusterSeaplane bomber
    82. Mex
    83. Advanced Metal ExtractorT2 mex
    84. Wind
    85. Death CavalryDeath Cavalry
    86. Wind ×2
    87. Construction ShipCon ship
    88. Wind
    89. Dam BusterSeaplane bomber
    90. Wind ×3
    91. Dam BusterSeaplane bomber
    92. Wind
    93. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    94. Wind ×3
    95. Dam BusterSeaplane bomber
    96. Wind ×2
    97. Dam BusterSeaplane bomber
    98. Wind ×2
    99. Tidal
    100. Wind
    101. Dam BusterSeaplane bomber
    102. Tidal
    103. Wind
    104. Tidal
    105. Wind ×2
    106. WatcherRadar plane
    107. Tidal
    108. Wind
    109. Mex
    110. Wind
    111. Tidal
    112. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    113. BatSeaplane fighter
    114. Wind
    115. Tidal
    116. Wind ×2
    117. Tidal
    118. BatSeaplane fighter
    119. Wind
    120. Tidal ×2
    121. Wind
    122. BatSeaplane fighter
    123. Tidal ×2
    124. Wind
    125. BatSeaplane fighter
    126. Tidal
    127. Wind ×3
    128. BatSeaplane fighter

Counts are medians over the build's games: half of them build more, half fewer. The example game is Elpoloow's (35 OS, 28/08/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:48 · in 72% 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 7:44 · 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

1096 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039700
2:0092800
3:00156700
4:002900051
5:00410913152
6:005464441241
7:006946931551
8:0086111570903
9:001049024561351
10:001261036252061
11:001521848802898
12:001811663973757
13:002141473914448
14:002501386465363
15:002878197446294
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

Elpoloow

35.2 OS · 28/08/2026

Open source match ↗

3 received units · includes a constructor
209 metal received · 24271 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=1085
Shipyard3:17Middle 50%: 3:02–3:33 · n=1090
Orca4:19Middle 50%: 3:54–5:00 · n=755
Riptide4:35Middle 50%: 4:08–5:21 · n=1064
Oppressor5:51Middle 50%: 5:08–6:35 · n=992
Geothermal Powerplant7:59Middle 50%: 7:01–9:00 · n=655
Advanced Metal Extractor9:22Middle 50%: 8:45–10:10 · n=940

Played most by

sirniho122games of this buildSHOGVN92games of this buildOptimusprimenutt84games of this buildPRO_Rerory47games of this buildhihimik41games of this build