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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 · 993 distinct matches · 101 players · 83% of Cortex Geo sea games · team won 52% of 1114 · 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 993 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 · 6 steps
    1. Mex ×3
    2. Wind ×2
    3. Windfor Air
    4. Wind
    5. Windfor Air
    6. Bot LabBot Labnot finished by 15:00 · 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 · 13 steps
    1. Bot LabBot Labdone 1:24
    2. Wind
    3. GraverobberGraverobber ×2
    4. Construction BotCon bot ×2
    5. GruntGrunt
    6. Con turret
    7. GruntGrunt
    8. Mex
    9. Energy storage
    10. Mex ×2
    11. ThistleThistle
    12. Radar TowerRadar Tower
    13. ShipyardShipyarddone 3:41 · 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 (40%)

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

    The example game in this phase · 7 steps
    1. OrcaSubmarine ×2done 3:57 · typical 4:19
    2. Vehicle PlantVehicle Plantdone 4:28
    3. WolverineWolverinefor Suicide front
    4. Radar TowerRadar Tower
    5. WolverineWolverine ×2for Suicide front
    6. Radar TowerRadar Tower
    7. Construction VehicleCon vehicle
  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 · 98 steps
    1. ShipyardShipyarddone 5:22
    2. OppressorDestroyerdone 5:38 · typical 5:52
    3. HerringMissile corvette
    4. HerringMissile corvettefor Beach sea
    5. Construction ShipCon ship
    6. OrcaSubmarine
    7. Mex
    8. RiptideFrigatedone 6:33 · typical 4:35
    9. Mex ×2
    10. RiptideFrigate
    11. Mex
    12. Death CavalryDeath Cavalry
    13. OppressorDestroyer
    14. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    15. ThistleThistle
    16. SupporterGunboat ×3
    17. GuardGuard
    18. OrcaSubmarine
    19. ThistleThistle
    20. RiptideFrigate
    21. Radar TowerRadar Tower
    22. RiptideFrigate
    23. Mex
    24. Construction ShipCon ship
    25. GuardGuard
    26. Construction ShipCon ship
    27. Con turret
    28. Mex
    29. Energy storage
    30. Wind
    31. GuardGuard
    32. Wind ×4
    33. Mex
    34. Wind
    35. GuardGuard
    36. Radar TowerRadar Tower
    37. GuardGuard
    38. Wind ×2
    39. Twin GuardTwin Guard
    40. Wind
    41. Dragon's MawDragon's Maw
    42. Mex
    43. GuardGuard ×2
    44. Wind ×2
    45. Vehicle PlantVehicle Plantdone 10:59
    46. Wind ×2
    47. HerringMissile corvette
    48. Wind
    49. Advanced Metal ExtractorT2 mexdone 12:17 · typical 9:21
    50. Wind
    51. HerringMissile corvette
    52. Wind
    53. HerringMissile corvette
    54. Mex
    55. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    56. HerringMissile corvette
    57. PounderPounder
    58. BlitzBlitz
    59. HerringMissile corvette
    60. SlingshotSlingshot
    61. HerringMissile corvette
    62. PounderPounder
    63. BlitzBlitz
    64. HerringMissile corvette
    65. Mex
    66. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    67. SlingshotSlingshot
    68. Mex
    69. Dragon's MawDragon's Maw
    70. Wind
    71. PounderPounder ×4
    72. BlitzBlitz
    73. Wind
    74. Advanced Metal ExtractorT2 mex
    75. Wind
    76. Construction ShipCon ship
    77. Wind
    78. Wind ×2
    79. Construction ShipCon ship
    80. Wind
    81. Mex
    82. Tidal
    83. Wind ×2
    84. Energy storage
    85. Tidal
    86. Wind
    87. Tidal
    88. Wind ×3
    89. Naval Construction Turret
    90. Metal storage
    91. Tidal
    92. Wind
    93. Advanced Metal ExtractorT2 mex
    94. Naval Construction Turret
    95. Wind
    96. Con turret
    97. Advanced ShipyardAdvanced Shipyardnot finished by 15:00
    98. Wind ×2

Counts are medians over the build's games: half of them build more, half fewer. The example game is Kcorp's (49 OS, 02/10/2026); 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

1114 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039700
2:0092800
3:00156700
4:002899051
5:00410913552
6:005461441242
7:006946931551
8:0086181570906
9:001049724501367
10:001261036252062
11:001521848702893
12:001810063303773
13:002136173614451
14:002499586015363
15:002874196886321
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

Kcorp

49.5 OS · 02/10/2026

Open source match ↗

6 received units · includes a constructor
207 metal received · 50546 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=1103
Shipyard3:17Middle 50%: 3:02–3:33 · n=1108
Orca4:19Middle 50%: 3:54–5:00 · n=769
Riptide4:35Middle 50%: 4:07–5:20 · n=1081
Oppressor5:52Middle 50%: 5:08–6:36 · n=1009
Geothermal Powerplant8:00Middle 50%: 7:01–9:02 · n=664
Advanced Metal Extractor9:21Middle 50%: 8:45–10:10 · n=955

Played most by

sirniho123games of this buildSHOGVN94games of this buildOptimusprimenutt84games of this buildPRO_Rerory48games of this buildhihimik41games of this build
Standard geo sea · Cortex Geo sea build order · BAR Build Atlas