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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 · 976 distinct matches · 100 players · 83% of Cortex Geo sea games · team won 52% of 1095 · 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 976 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. Windfor Air
    3. Wind ×4
    4. Bot LabBot Labdone 1:18 · 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 · 9 steps
    1. Windfor Air
    2. GraverobberGraverobber ×2for Front
    3. Construction BotCon bot
    4. TrasherTrasher
    5. Construction BotCon bot ×4
    6. Mex ×2
    7. Construction BotCon bot
    8. GruntGrunt
    9. ShipyardShipyarddone 3:17 · 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 · 13 steps
    1. ThistleThistle
    2. OrcaSubmarinedone 3:36 · typical 4:19
    3. Mex ×2
    4. Construction ShipCon ship
    5. OppressorDestroyerdone 4:34 · typical 5:52
    6. Mex ×2
    7. Converter
    8. Radar TowerRadar Tower
    9. Converter
    10. Geothermal PowerplantGeodone 5:42 · typical 7:59
    11. Mex
    12. GuardGuard
    13. RiptideFrigatedone 5:04 · typical 4:35
  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 · 109 steps
    1. GuardGuard
    2. HerringMissile corvette
    3. Mex
    4. OppressorDestroyer
    5. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    6. GuardGuard
    7. ThistleThistle
    8. GuardGuard
    9. Converter
    10. OppressorDestroyer
    11. Converter
    12. Con turret
    13. Converter
    14. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    15. Twin GuardTwin Guard
    16. Death CavalryDeath Cavalry
    17. Twin GuardTwin Guard
    18. Con turret
    19. RiptideFrigate
    20. Wind
    21. HerringMissile corvette
    22. Con turret
    23. Wind
    24. GuardGuard
    25. OppressorDestroyer
    26. Wind
    27. Mex
    28. Wind
    29. Death CavalryDeath Cavalry
    30. Wind
    31. GuardGuard
    32. RiptideFrigate
    33. Wind
    34. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    35. Wind
    36. HerringMissile corvette
    37. Wind
    38. OppressorDestroyer
    39. Wind ×2
    40. Construction ShipCon ship
    41. Mex
    42. Wind
    43. Construction ShipCon ship
    44. Wind
    45. Naval Construction Turret
    46. Advanced Metal ExtractorT2 mexdone 10:30 · typical 9:22
    47. Tidal
    48. Wind
    49. Tidal
    50. Wind
    51. Mex
    52. Naval Construction Turret
    53. Tidal ×3
    54. Wind
    55. Tidal
    56. Advanced Metal ExtractorT2 mex
    57. Tidal
    58. SlingshotSlingshot
    59. Wind
    60. Tidal ×3
    61. Wind
    62. Advanced Metal ExtractorT2 mex
    63. Tidal ×2
    64. SlingshotSlingshot
    65. Wind
    66. Tidal ×2
    67. Wind
    68. Advanced Metal ExtractorT2 mex
    69. Naval Construction Turret
    70. Wind
    71. Naval Construction Turret
    72. Wind
    73. Amphibious ComplexAmphibious Complexdone 12:12
    74. Wind ×5
    75. SalamanderSalamander
    76. Wind
    77. SalamanderSalamander
    78. Naval Energy Converter
    79. Wind
    80. Advanced Metal ExtractorT2 mex
    81. Wind
    82. SalamanderSalamander
    83. Naval Energy Converter
    84. Wind ×2
    85. SalamanderSalamander
    86. Naval Energy Converter
    87. SupporterGunboat ×2
    88. Wind
    89. SupporterGunboat
    90. SalamanderSalamander
    91. SupporterGunboat
    92. Advanced Metal ExtractorT2 mex
    93. Wind
    94. Tidal
    95. SalamanderSalamander
    96. Tidal
    97. Wind
    98. Tidal
    99. SalamanderSalamander
    100. Tidal
    101. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    102. Tidal
    103. SalamanderSalamander ×2
    104. Naval Construction Turret ×2
    105. SalamanderSalamander
    106. Naval Construction Turret ×2
    107. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    108. Advanced Geothermal PowerplantAdvanced Geothermal Powerplantnot finished by 15:00
    109. SalamanderSalamander ×2

Counts are medians over the build's games: half of them build more, half fewer. The example game is tedsterr's (44 OS, 23/08/2026); 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

1095 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039700
2:0092800
3:00156700
4:002900051
5:00410813052
6:005463440241
7:006945930551
8:0086091570904
9:001049124521351
10:001261236252061
11:001521948812901
12:001812163983761
13:002141473934451
14:002501686485371
15:002879197536300
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

44.0 OS · 23/08/2026

Open source match ↗

3 received units · includes a constructor
2 metal received · 12292 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=1084
Shipyard3:17Middle 50%: 3:02–3:33 · n=1089
Orca4:19Middle 50%: 3:54–5:00 · n=754
Riptide4:35Middle 50%: 4:08–5:20 · n=1063
Oppressor5:52Middle 50%: 5:08–6:35 · n=991
Geothermal Powerplant7:59Middle 50%: 7:01–9:00 · n=654
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