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

Counts are medians over the build's games: half of them build more, half fewer. The example game is TheSituation's (50 OS, 19/09/2026); 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

TheSituation

49.5 OS · 19/09/2026

Open source match ↗

4 received units · includes a constructor
290 metal received · 82412 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