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Geo sea / Cortex / Economy first / OBSERVED BUILD

Standard geo sea

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 · 897 distinct matches · 97 players · 83% of Cortex Geo sea games · team won 52% of 1005 · 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 897 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. Wind ×2for Air
    3. Wind ×2
    4. Bot LabBot Labdone 1:11 · 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 3:03–3:33
    Builders
    • Construction Bot3 Con bot
    • Graverobber2 Graverobber
    Army
    • Grunt1 Grunt

    Some games also: con turret (47%) · trasher (39%) · energy storage (34%) · wind for allies (33%)

    By 2:52 in all: 4 mex · 5 wind · 1 energy storage

    The example game in this phase · 8 steps
    1. Windfor Air
    2. Construction BotCon bot ×2
    3. GraverobberGraverobber
    4. Wind
    5. GraverobberGraverobber
    6. Mex
    7. Construction BotCon bot
    8. ShipyardShipyarddone 2:44 · 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 (50%) · wind (48%) · missile corvette (47%) · 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 · 20 steps
    1. Construction ShipCon ship
    2. Construction BotCon bot
    3. OrcaSubmarinedone 3:20 · typical 4:19
    4. Mex ×2
    5. RiptideFrigatedone 4:01 · typical 4:35
    6. Con turret
    7. Mex ×2
    8. ThistleThistle
    9. Mex
    10. JellyfishJellyfish
    11. RiptideFrigate
    12. GuardGuard
    13. Tidal ×2
    14. Mex
    15. GuardGuard
    16. HerringMissile corvette
    17. Geothermal PowerplantGeodone 5:54 · typical 8:00
    18. RiptideFrigate
    19. Radar TowerRadar Tower
    20. 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
    • Herring2 Missile corvette
    Other
    • Naval Radar / Sonar Tower2 Naval Radar / Sonar Tower

    Some games also: geo (48%) · Thistle (42%) · submarine (33%)

    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 · 91 steps
    1. ThistleThistle
    2. Wind ×2
    3. OppressorDestroyerdone 6:26 · typical 5:51
    4. Energy storage
    5. Radar TowerRadar Tower
    6. Construction ShipCon ship
    7. Naval Construction Turret
    8. Radar TowerRadar Tower
    9. ThistleThistle
    10. SupporterGunboat ×2
    11. Con turret
    12. SupporterGunboat
    13. Death CavalryDeath Cavalry
    14. SupporterGunboat
    15. Converter
    16. SupporterGunboat
    17. RiptideFrigate
    18. Converter
    19. Advanced Metal ExtractorT2 mexdone 8:32 · typical 9:22
    20. Death CavalryDeath Cavalry
    21. Converter
    22. RiptideFrigate
    23. Converter ×2
    24. Mex
    25. Converter
    26. Death CavalryDeath Cavalry
    27. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    28. Advanced Metal ExtractorT2 mex
    29. Death CavalryDeath Cavalry
    30. SlingshotSlingshot
    31. RiptideFrigate ×3
    32. Advanced Metal ExtractorT2 mex
    33. SlingshotSlingshot
    34. RiptideFrigate ×2
    35. HerringMissile corvette
    36. RiptideFrigate
    37. Advanced Metal ExtractorT2 mex
    38. Naval Construction Turret
    39. OppressorDestroyer ×2
    40. Naval Construction Turret
    41. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    42. RiptideFrigate
    43. Death CavalryDeath Cavalry
    44. RiptideFrigate
    45. SlingshotSlingshot
    46. RiptideFrigate
    47. SlingshotSlingshot
    48. Naval Construction Turret
    49. RiptideFrigate
    50. HerringMissile corvette
    51. RiptideFrigate
    52. Advanced Geothermal PowerplantAdvanced Geothermal Powerplantdone 13:08
    53. SlingshotSlingshot
    54. OppressorDestroyer
    55. RiptideFrigate
    56. Death CavalryDeath Cavalry
    57. RiptideFrigate
    58. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    59. RiptideFrigate ×2
    60. HerringMissile corvette
    61. RiptideFrigate
    62. Naval Construction Turret
    63. HerringMissile corvette
    64. Naval Metal Storage
    65. SupporterGunboat
    66. HerringMissile corvette
    67. Naval Construction Turret
    68. HerringMissile corvette ×2
    69. Advanced ShipyardAdvanced Shipyarddone 13:10
    70. HerringMissile corvette
    71. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    72. Construction ShipCon ship ×3
    73. Mex
    74. HerringMissile corvette ×6
    75. SupporterGunboat ×3
    76. Advanced Construction SubAdvanced Construction Sub
    77. Advanced Metal ExtractorT2 mex
    78. SupporterGunboat
    79. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    80. PathfinderPathfinder ×3
    81. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    82. PathfinderPathfinder
    83. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 14:43
    84. Advanced Metal ExtractorT2 mex
    85. PathfinderPathfinder
    86. Mex
    87. OasisOasis
    88. Fusion ReactorFusionnot finished by 15:00
    89. Con turret
    90. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    91. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor

Counts are medians over the build's games: half of them build more, half fewer. The example game is Ariah's (42 OS, 23/09/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:47 · in 73% of games

You get

  • Finch1 Finch from Airfirst at 1:51 · in 82% 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

1005 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039700
2:0092800
3:00157100
4:002914051
5:00411013052
6:005467440232
7:006953931547
8:0086241570891
9:001051024401344
10:001264436272050
11:001523749202921
12:001815364203827
13:002150674134511
14:002505786485441
15:002879297896342
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

Ariah

42.0 OS · 23/09/2026

Open source match ↗

5 received units · includes a constructor
209 metal received · 80237 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=999
Shipyard3:17Middle 50%: 3:03–3:33 · n=1000
Orca4:19Middle 50%: 3:53–4:59 · n=686
Riptide4:35Middle 50%: 4:08–5:20 · n=977
Oppressor5:51Middle 50%: 5:08–6:32 · n=912
Geothermal Powerplant8:00Middle 50%: 7:01–8:58 · n=605
Advanced Metal Extractor9:22Middle 50%: 8:45–10:10 · n=861

Played most by

sirniho119games of this buildOptimusprimenutt78games of this buildSHOGVN74games of this buildPRO_Rerory46games of this buildhihimik41games of this build