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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 · 969 distinct matches · 100 players · 83% of Cortex Geo sea games · team won 52% of 1087 · 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 969 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 · 5 steps
    1. Mex ×3
    2. Wind
    3. Wind ×2for Air
    4. Wind
    5. Bot LabBot Labdone 1:13 · 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 · 2 steps
    1. Construction BotCon bot ×3
    2. ShipyardShipyarddone 2:50 · 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 (41%)

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

    The example game in this phase · 21 steps
    1. GraverobberGraverobber
    2. Mex
    3. GraverobberGraverobber ×2
    4. Construction ShipCon ship
    5. Mex
    6. GruntGrunt ×2
    7. Mex
    8. TrasherTrasher
    9. Construction ShipCon ship
    10. Mex
    11. OrcaSubmarinedone 4:09 · typical 4:19
    12. Mex
    13. Radar TowerRadar Tower
    14. GuardGuard
    15. RiptideFrigate ×2not finished by 15:00 · typical 4:35
    16. ThistleThistle
    17. RiptideFrigate
    18. ThistleThistle
    19. Construction ShipCon ship
    20. Geothermal PowerplantGeodone 8:00 · typical 8:00
    21. 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 (48%) · 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 · 99 steps
    1. OppressorDestroyerdone 5:25 · typical 5:52
    2. GuardGuard
    3. Radar TowerRadar Tower
    4. Mex
    5. HerringMissile corvette
    6. Death CavalryDeath Cavalry
    7. Mex
    8. GuardGuard
    9. OrcaSubmarine
    10. GuardGuard
    11. RiptideFrigate
    12. Advanced Metal ExtractorT2 mexdone 8:03 · typical 9:22
    13. Mex
    14. UrchinUrchin
    15. GuardGuard
    16. RiptideFrigate
    17. OppressorDestroyer
    18. HerringMissile corvette
    19. Construction ShipCon ship
    20. Advanced Metal ExtractorT2 mex
    21. Construction ShipCon ship
    22. OrcaSubmarine
    23. Energy storage
    24. Construction ShipCon ship
    25. Mex
    26. Advanced Metal ExtractorT2 mex
    27. RiptideFrigate
    28. UrchinUrchin
    29. RiptideFrigate
    30. OppressorDestroyer
    31. Advanced Metal ExtractorT2 mex
    32. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    33. HerringMissile corvette
    34. OrcaSubmarine
    35. RiptideFrigate
    36. UrchinUrchin
    37. Construction ShipCon ship
    38. Advanced Metal ExtractorT2 mex
    39. RiptideFrigate
    40. OppressorDestroyer
    41. Con turret
    42. HerringMissile corvette
    43. OrcaSubmarine
    44. Advanced Metal ExtractorT2 mex
    45. RiptideFrigate
    46. Tidal ×2
    47. RiptideFrigate
    48. Tidal ×2
    49. Construction ShipCon ship
    50. Con turret
    51. Advanced ShipyardAdvanced Shipyarddone 13:04
    52. Wind ×2
    53. Converter
    54. Wind ×2
    55. Advanced Construction SubAdvanced Construction Sub
    56. Wind ×2
    57. Advanced Geothermal PowerplantAdvanced Geothermal Powerplantdone 14:56
    58. Converter
    59. Wind
    60. PathfinderPathfinder
    61. Wind ×2
    62. Naval Construction Turret
    63. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 14:01
    64. PathfinderPathfinder
    65. Wind
    66. Converter
    67. Naval Construction Turret
    68. Wind
    69. PhantasmRadar jammer ship
    70. Naval Construction Turret
    71. Wind
    72. Naval Construction Turret
    73. Wind ×2
    74. Tidal
    75. Converter
    76. Tidal ×2
    77. Black HydraBlack Hydranot finished by 15:00
    78. Wind
    79. Tidal
    80. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    81. Wind
    82. Tidal
    83. Wind
    84. Tidal
    85. Wind
    86. Tidal
    87. Wind
    88. Tidal ×2
    89. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    90. Wind
    91. Tidal
    92. Wind
    93. Tidal
    94. Wind
    95. Tidal
    96. Wind
    97. Tidal ×2
    98. Wind ×2
    99. Tidal

Counts are medians over the build's games: half of them build more, half fewer. The example game is FakeOS's (35 OS, 12/09/2026); 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

1087 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039700
2:0092800
3:00156700
4:002902051
5:00410913252
6:005464441242
7:006945931551
8:0086141570905
9:001049124521361
10:001260736252071
11:001521748812914
12:001812163983790
13:002141673894451
14:002503086445371
15:002879197626321
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

FakeOS

35.1 OS · 12/09/2026

Open source match ↗

5 received units · includes a constructor
658 metal received · 107863 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=1076
Shipyard3:17Middle 50%: 3:02–3:33 · n=1081
Orca4:19Middle 50%: 3:54–5:00 · n=752
Riptide4:35Middle 50%: 4:08–5:21 · n=1055
Oppressor5:52Middle 50%: 5:09–6:35 · n=983
Geothermal Powerplant8:00Middle 50%: 7:01–9:01 · n=651
Advanced Metal Extractor9:22Middle 50%: 8:46–10:10 · n=932

Played most by

sirniho121games of this buildSHOGVN90games of this buildOptimusprimenutt84games of this buildPRO_Rerory47games of this buildhihimik41games of this build