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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 1:07 · 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 · 11 steps
    1. Wind
    2. GraverobberGraverobber
    3. Construction BotCon bot
    4. Wind ×2
    5. Construction BotCon bot ×2
    6. GraverobberGraverobber ×2
    7. TrasherTrasher
    8. GruntGrunt
    9. GraverobberGraverobber
    10. Energy storage
    11. ShipyardShipyarddone 3:01 · 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 · 21 steps
    1. Construction ShipCon ship
    2. Mex
    3. SupporterGunboat ×2
    4. Con turret
    5. SupporterGunboat ×2
    6. Mex ×2
    7. SupporterGunboat
    8. Converter
    9. OrcaSubmarinedone 4:26 · typical 4:19
    10. Converter
    11. Mex ×3
    12. Converter
    13. RiptideFrigatedone 4:46 · typical 4:35
    14. Converter
    15. GuardGuard
    16. Wind
    17. Mex
    18. RiptideFrigate
    19. Wind
    20. Mex
    21. 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
    • 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 · 106 steps
    1. ThistleThistle
    2. GuardGuard
    3. HerringMissile corvette
    4. Wind
    5. OppressorDestroyerdone 6:04 · typical 5:51
    6. Wind
    7. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    8. ThistleThistle
    9. Wind
    10. Mex
    11. GuardGuard
    12. UrchinUrchin
    13. Death CavalryDeath Cavalry
    14. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    15. Wind
    16. RiptideFrigate
    17. Wind
    18. Radar TowerRadar Tower
    19. Advanced Metal ExtractorT2 mexdone 7:47 · typical 9:22
    20. RiptideFrigate
    21. ThistleThistle
    22. HerringMissile corvette
    23. OppressorDestroyer
    24. GuardGuard
    25. Geothermal PowerplantGeodone 10:07 · typical 7:59
    26. Advanced Metal ExtractorT2 mex
    27. RiptideFrigate ×2
    28. HerringMissile corvette
    29. OppressorDestroyer
    30. HerringMissile corvette
    31. Construction ShipCon ship
    32. Naval Construction Turret
    33. Construction ShipCon ship
    34. Tidal
    35. Advanced Metal ExtractorT2 mex
    36. Tidal ×2
    37. UrchinUrchin
    38. Tidal
    39. Mex
    40. Tidal ×4
    41. Naval Metal Storage
    42. Tidal
    43. Naval Construction Turret
    44. Seaplane PlatformSeaplane Platformdone 10:51
    45. Advanced Metal ExtractorT2 mex
    46. Mex
    47. Tidal
    48. Dam BusterSeaplane bomber
    49. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    50. Twin GuardTwin Guard
    51. Tidal
    52. Dam BusterSeaplane bomber ×3
    53. Mex
    54. Con turret
    55. Twin GuardTwin Guard
    56. Dam BusterSeaplane bomber
    57. Advanced Metal ExtractorT2 mex
    58. Wind
    59. Dam BusterSeaplane bomber
    60. Wind
    61. Dam BusterSeaplane bomber
    62. Wind
    63. WatcherRadar plane
    64. Wind
    65. Twin GuardTwin Guard
    66. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    67. Construction ShipCon ship
    68. BatSeaplane fighter
    69. Naval Construction Turret
    70. Wind
    71. Advanced ShipyardAdvanced Shipyarddone 13:59
    72. Wind
    73. BatSeaplane fighter
    74. Naval Construction Turret
    75. Wind
    76. Advanced Metal ExtractorT2 mex
    77. Naval Construction Turret
    78. BatSeaplane fighter
    79. Wind
    80. Twin GuardTwin Guard
    81. Naval Construction Turret
    82. BatSeaplane fighter
    83. Amphibious ComplexAmphibious Complexdone 13:36
    84. Wind
    85. Mex
    86. BatSeaplane fighter
    87. Wind
    88. BatSeaplane fighter
    89. Wind
    90. BatSeaplane fighter
    91. Wind ×2
    92. BatSeaplane fighter
    93. Wind
    94. BatSeaplane fighter
    95. PhantasmRadar jammer ship
    96. Wind ×2
    97. BatSeaplane fighter
    98. Wind
    99. Advanced Construction SubAdvanced Construction Sub
    100. Advanced Geothermal PowerplantAdvanced Geothermal Powerplantnot finished by 15:00
    101. Wind
    102. Dragon's TeethDragon's Teeth ×3
    103. Con turret
    104. Dragon's TeethDragon's Teeth
    105. Con turret
    106. Dragon's TeethDragon's Teeth

Counts are medians over the build's games: half of them build more, half fewer. The example game is Elpoloow's (35 OS, 27/08/2026); 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

35.1 OS · 27/08/2026

Open source match ↗

7 received units · includes a constructor
49 metal received · 128875 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