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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 · 3 steps
    1. Mex ×3
    2. Wind ×3
    3. Bot LabBot Labdone 1:04 · 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
    2. Solar
    3. GraverobberGraverobber
    4. Wind
    5. GraverobberGraverobber ×2
    6. Construction BotCon bot ×2
    7. Con turret
    8. GruntGrunt ×2
    9. Mex
    10. GruntGrunt
    11. ShipyardShipyarddone 3:28 · 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 · 14 steps
    1. Construction BotCon bot
    2. Mex ×2
    3. OrcaSubmarinedone 3:47 · typical 4:19
    4. GuardGuard ×2
    5. Construction ShipCon ship
    6. GuardGuard
    7. OrcaSubmarine
    8. Radar TowerRadar Tower
    9. Mex
    10. GuardGuard
    11. Radar TowerRadar Tower
    12. Mex
    13. OrcaSubmarine
    14. 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 (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 · 92 steps
    1. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    2. HerringMissile corvette
    3. UrchinUrchin
    4. RiptideFrigatedone 5:48 · typical 4:35
    5. Mex
    6. GuardGuard
    7. RiptideFrigate
    8. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    9. HerringMissile corvette
    10. Wind
    11. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    12. OppressorDestroyerdone 7:56 · typical 5:52
    13. Wind
    14. Energy storage
    15. Wind ×3
    16. Geothermal PowerplantGeodone 10:00 · typical 7:59
    17. Wind ×2
    18. Converter ×4
    19. RiptideFrigate ×2
    20. Advanced Metal ExtractorT2 mexdone 9:46 · typical 9:22
    21. RiptideFrigate
    22. SkaterSkater
    23. DolphinDolphin ×2
    24. RiptideFrigate
    25. DolphinDolphin ×4
    26. Advanced Metal ExtractorT2 mex
    27. DolphinDolphin ×4
    28. Radar TowerRadar Tower
    29. OppressorDestroyer
    30. DolphinDolphin
    31. Advanced Metal ExtractorT2 mex
    32. ThistleThistle
    33. DolphinDolphin ×3
    34. GuardGuard
    35. DolphinDolphin ×2
    36. HerringMissile corvette
    37. Mex
    38. Advanced Metal ExtractorT2 mex
    39. Death CavalryDeath Cavalry
    40. DolphinDolphin
    41. GuardGuard
    42. DolphinDolphin ×2
    43. RiptideFrigate
    44. DolphinDolphin
    45. ThistleThistle
    46. DolphinDolphin
    47. RiptideFrigate
    48. DolphinDolphin
    49. RiptideFrigate
    50. DolphinDolphin
    51. Advanced Metal ExtractorT2 mex
    52. DolphinDolphin
    53. RiptideFrigate
    54. Con turret ×2
    55. DolphinDolphin ×2
    56. OppressorDestroyer
    57. DolphinDolphin
    58. Advanced Metal ExtractorT2 mex
    59. DolphinDolphin
    60. Death CavalryDeath Cavalry
    61. DolphinDolphin ×2
    62. RiptideFrigate
    63. DolphinDolphin
    64. Converter
    65. DolphinDolphin
    66. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    67. RiptideFrigate
    68. DolphinDolphin
    69. Converter
    70. DolphinDolphin
    71. OppressorDestroyer
    72. DolphinDolphin
    73. Converter
    74. DolphinDolphin ×2
    75. Converter
    76. Death CavalryDeath Cavalry
    77. DolphinDolphin
    78. Mex
    79. DolphinDolphin
    80. Converter
    81. DolphinDolphin
    82. RiptideFrigate
    83. DolphinDolphin
    84. Converter
    85. RiptideFrigate
    86. UrchinUrchin
    87. DolphinDolphin ×2
    88. OppressorDestroyer
    89. DolphinDolphin ×4
    90. Death CavalryDeath Cavalry
    91. Con turret
    92. DolphinDolphin ×3

Counts are medians over the build's games: half of them build more, half fewer. The example game is N2G's (43 OS, 21/08/2026); 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

N2G

43.2 OS · 21/08/2026

Open source match ↗

5 received units · includes a constructor
304 metal received · 32322 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