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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 · 992 distinct matches · 101 players · 83% of Cortex Geo sea games · team won 52% of 1113 · 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 992 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 · 4 steps
    1. Mex ×3
    2. Wind ×2for Air
    3. Wind ×3
    4. Bot LabBot Labdone 1:16 · 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 · 10 steps
    1. Wind
    2. GraverobberGraverobber ×2for Suicide front
    3. Construction BotCon bot
    4. TrasherTrasher
    5. Construction BotCon bot ×3
    6. Mex
    7. Construction BotCon bot
    8. GruntGrunt
    9. Construction BotCon bot
    10. ShipyardShipyarddone 3:10 · 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 (41%)

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

    The example game in this phase · 16 steps
    1. OrcaSubmarinedone 3:29 · typical 4:19
    2. Mex
    3. Wind
    4. Mex
    5. Construction ShipCon ship
    6. RiptideFrigatedone 4:02 · typical 4:35
    7. Converter
    8. Wind
    9. Mex
    10. OppressorDestroyerdone 5:12 · typical 5:52
    11. Wind
    12. Radar TowerRadar Tower
    13. Mex
    14. Geothermal PowerplantGeodone 5:42 · typical 8:00
    15. Converter
    16. 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 · 128 steps
    1. Mex
    2. HerringMissile corvette
    3. ThistleThistle
    4. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    5. ThistleThistle
    6. Mex
    7. RiptideFrigate
    8. GuardGuard
    9. Advanced Metal ExtractorT2 mexdone 7:18 · typical 9:21
    10. Converter
    11. Mex
    12. OppressorDestroyer
    13. Converter
    14. GuardGuard
    15. Converter
    16. GuardGuard
    17. Mexfor Suicide front
    18. Con turret
    19. Radar TowerRadar Tower
    20. GuardGuard
    21. Death CavalryDeath Cavalry
    22. GuardGuard
    23. Advanced Metal ExtractorT2 mex
    24. Mexfor Suicide front
    25. GuardGuard ×2
    26. RiptideFrigate
    27. Con turret
    28. GuardGuard
    29. Dragon's TeethDragon's Teeth ×2
    30. Advanced Metal ExtractorT2 mex
    31. Dragon's TeethDragon's Teeth ×2
    32. GuardGuard
    33. HerringMissile corvette
    34. Wind
    35. RiptideFrigate
    36. Wind ×2
    37. OppressorDestroyer
    38. Wind
    39. Radar TowerRadar Tower
    40. Wind ×2
    41. Death CavalryDeath Cavalry
    42. Wind
    43. Construction ShipCon ship
    44. Wind ×2
    45. Construction ShipCon ship
    46. Wind ×2
    47. Construction ShipCon ship
    48. Wind
    49. Advanced Metal ExtractorT2 mex
    50. Construction ShipCon ship
    51. Wind
    52. Naval Construction Turret ×2
    53. Amphibious ComplexAmphibious Complexdone 10:47
    54. Naval Construction Turret
    55. Con turret
    56. Tidal ×2
    57. Wind
    58. Tidal ×3
    59. Wind
    60. Con turret
    61. Tidal
    62. Mex
    63. Tidal ×2
    64. Wind
    65. Tidal ×2
    66. SalamanderSalamander
    67. Tidal
    68. SalamanderSalamander
    69. Advanced Metal ExtractorT2 mex
    70. Tidal
    71. SalamanderSalamander
    72. Mex
    73. Tidal ×2
    74. SalamanderSalamander ×2
    75. Tidal ×2
    76. Energy storage
    77. Tidal
    78. SalamanderSalamander
    79. Tidal
    80. Wind
    81. Mex
    82. Wind
    83. Advanced Metal ExtractorT2 mex
    84. Wind ×2
    85. Tidal
    86. Wind
    87. Tidal
    88. Wind ×3
    89. SalamanderSalamander
    90. Wind
    91. Tidal
    92. Wind ×3
    93. Tidal ×2
    94. Wind ×3
    95. Tidal
    96. SalamanderSalamander
    97. Wind ×2
    98. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    99. Wind ×3
    100. SalamanderSalamander
    101. Wind ×4
    102. SalamanderSalamander
    103. Wind ×3
    104. SalamanderSalamander
    105. Wind ×3
    106. SalamanderSalamander
    107. Wind ×2
    108. Naval Construction Turret ×2
    109. Wind
    110. SalamanderSalamander
    111. Naval Construction Turret
    112. Wind
    113. Naval Construction Turret ×2
    114. Wind
    115. Naval Construction Turret
    116. Wind
    117. Naval Construction Turret
    118. SalamanderSalamander ×2
    119. Wind ×2
    120. Advanced Geothermal PowerplantAdvanced Geothermal Powerplantnot finished by 15:00
    121. Wind ×5
    122. Advanced ShipyardAdvanced Shipyarddone 14:20
    123. Naval Construction Turret
    124. Wind ×2
    125. Con turret ×3
    126. Wind
    127. Bot LabBot Labdone 14:34
    128. Wind ×4

Counts are medians over the build's games: half of them build more, half fewer. The example game is tedsterr's (43 OS, 09/08/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:48 · in 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

1113 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039700
2:0092800
3:00156700
4:002898051
5:00410813552
6:005460441241
7:006945930551
8:0086181570906
9:001049624471369
10:001260736252062
11:001521748682895
12:001810763203785
13:002136373644451
14:002499686105354
15:002874296936321
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

tedsterr

43.3 OS · 09/08/2026

Open source match ↗

4 received units · includes a constructor
804 metal received · 56978 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=1102
Shipyard3:17Middle 50%: 3:02–3:33 · n=1107
Orca4:19Middle 50%: 3:54–5:00 · n=768
Riptide4:35Middle 50%: 4:07–5:20 · n=1080
Oppressor5:52Middle 50%: 5:08–6:36 · n=1008
Geothermal Powerplant8:00Middle 50%: 7:01–9:02 · n=664
Advanced Metal Extractor9:21Middle 50%: 8:45–10:10 · n=954

Played most by

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