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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 · 977 distinct matches · 100 players · 83% of Cortex Geo sea games · team won 52% of 1096 · 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 977 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 ×2
    3. Wind ×2for Air
    4. Bot LabBot Labdone 1:09 · 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 · 6 steps
    1. Wind
    2. GraverobberGraverobber ×2
    3. Construction BotCon bot ×4
    4. GraverobberGraverobber
    5. TrasherTrasher
    6. ShipyardShipyarddone 2:56 · 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 · 11 steps
    1. Mex
    2. GruntGrunt
    3. HerringMissile corvette
    4. RiptideFrigate ×2done 3:17 · typical 4:35
    5. Mex
    6. ThistleThistle
    7. Construction ShipCon ship
    8. OppressorDestroyerdone 5:38 · typical 5:51
    9. Mex
    10. Con turret
    11. Mex ×3
  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 · 79 steps
    1. GuardGuard
    2. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    3. Radar TowerRadar Tower
    4. GuardGuard
    5. RiptideFrigate
    6. ThistleThistle
    7. Death CavalryDeath Cavalry
    8. GuardGuard
    9. Mex
    10. OrcaSubmarinedone 6:59 · typical 4:19
    11. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    12. GuardGuard
    13. HerringMissile corvette
    14. RiptideFrigate
    15. Energy storage
    16. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    17. RiptideFrigate
    18. Wind
    19. Geothermal PowerplantGeodone 9:32 · typical 7:59
    20. Wind
    21. OppressorDestroyer
    22. Advanced Metal ExtractorT2 mexdone 9:26 · typical 9:22
    23. Wind ×3
    24. RiptideFrigate
    25. Wind
    26. Advanced Metal ExtractorT2 mex
    27. Converter
    28. Death CavalryDeath Cavalry
    29. Con turret
    30. Converter
    31. Wind
    32. HerringMissile corvette
    33. Wind
    34. SlingshotSlingshot
    35. Converter
    36. RiptideFrigate
    37. Wind
    38. OppressorDestroyer
    39. Converter
    40. Wind ×2
    41. Advanced Metal ExtractorT2 mex
    42. RiptideFrigate
    43. Wind
    44. RiptideFrigate
    45. ThistleThistle
    46. RiptideFrigate
    47. Death CavalryDeath Cavalry
    48. Con turret
    49. HerringMissile corvette
    50. RiptideFrigate
    51. OppressorDestroyer
    52. Advanced Metal ExtractorT2 mex
    53. RiptideFrigate ×3
    54. Death CavalryDeath Cavalry
    55. HerringMissile corvette
    56. RiptideFrigate
    57. Con turret ×2
    58. HerringMissile corvette
    59. OppressorDestroyer
    60. Wind
    61. Advanced Metal ExtractorT2 mex
    62. Wind
    63. RiptideFrigate
    64. Wind ×3
    65. RiptideFrigate
    66. Wind
    67. RiptideFrigate
    68. Wind ×2
    69. Death CavalryDeath Cavalry
    70. Wind ×2
    71. HerringMissile corvette
    72. Wind
    73. RiptideFrigate
    74. Wind ×2
    75. Advanced Metal ExtractorT2 mex
    76. HerringMissile corvette
    77. Wind
    78. OppressorDestroyer
    79. Wind

Counts are medians over the build's games: half of them build more, half fewer. The example game is StoicMoose42's (36 OS, 13/09/2026); 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

1096 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039700
2:0092800
3:00156700
4:002900051
5:00410913152
6:005464441241
7:006946931551
8:0086111570903
9:001049024561351
10:001261036252061
11:001521848802898
12:001811663973757
13:002141473914448
14:002501386465363
15:002878197446294
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

StoicMoose42

35.8 OS · 13/09/2026

Open source match ↗

4 received units · includes a constructor
784 metal received · 58573 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=1085
Shipyard3:17Middle 50%: 3:02–3:33 · n=1090
Orca4:19Middle 50%: 3:54–5:00 · n=755
Riptide4:35Middle 50%: 4:08–5:21 · n=1064
Oppressor5:51Middle 50%: 5:08–6:35 · n=992
Geothermal Powerplant7:59Middle 50%: 7:01–9:00 · n=655
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