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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 · 8 steps
    1. Mex
    2. Wind
    3. Mex
    4. Wind
    5. Mex
    6. Wind ×4
    7. Energy storage
    8. Bot LabBot Labdone 1:39 · 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 · 3 steps
    1. GraverobberGraverobber
    2. Construction BotCon bot ×2
    3. ShipyardShipyarddone 2:54 · 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 · 19 steps
    1. Mex
    2. GruntGrunt
    3. RiptideFrigatedone 3:07 · typical 4:35
    4. TrasherTrasher
    5. Construction ShipCon ship
    6. RiptideFrigate
    7. Mex
    8. Converter
    9. OppressorDestroyerdone 4:32 · typical 5:52
    10. Mex
    11. Converter
    12. ThistleThistle
    13. Mex ×2
    14. GuardGuard
    15. UrchinUrchin
    16. HerringMissile corvette
    17. GuardGuard
    18. Death CavalryDeath Cavalry
    19. Geothermal PowerplantGeodone 7:24 · typical 7:59
  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 · 62 steps
    1. GuardGuard
    2. RiptideFrigate
    3. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    4. GuardGuard
    5. HerringMissile corvette
    6. RiptideFrigate
    7. HerringMissile corvette ×2
    8. OppressorDestroyer
    9. HerringMissile corvette
    10. Con turret
    11. GuardGuard
    12. Bot LabBot Labdone 9:11
    13. RiptideFrigate
    14. Con turret
    15. Advanced Metal ExtractorT2 mexdone 10:13
    16. Death CavalryDeath Cavalry
    17. GruntGrunt ×2
    18. Con turret
    19. AggravatorAggravator
    20. Construction ShipCon ship
    21. AggravatorAggravator
    22. SlingshotSlingshot
    23. OppressorDestroyer
    24. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    25. Advanced Metal ExtractorT2 mex
    26. Naval Energy Converter
    27. HerringMissile corvette
    28. Naval Energy Converter
    29. Construction BotCon bot
    30. Advanced Metal ExtractorT2 mex
    31. HerringMissile corvette ×2
    32. Advanced Metal ExtractorT2 mex
    33. Construction ShipCon ship ×2
    34. Naval Construction Turret
    35. UrchinUrchin
    36. SlingshotSlingshot
    37. Naval Construction Turret
    38. RiptideFrigate
    39. Tidal
    40. RiptideFrigate
    41. Tidal
    42. RiptideFrigate
    43. Tidal
    44. Naval Construction Turret
    45. RiptideFrigate
    46. Tidal
    47. RiptideFrigate
    48. Tidal
    49. HerringMissile corvette
    50. Tidal
    51. HerringMissile corvette
    52. RiptideFrigate ×2
    53. Con turret
    54. Advanced Metal ExtractorT2 mex
    55. RiptideFrigate
    56. SupporterGunboat
    57. Naval Construction Turret
    58. SupporterGunboat
    59. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    60. Death CavalryDeath Cavalry ×3
    61. SupporterGunboat ×2
    62. RiptideFrigate

Counts are medians over the build's games: half of them build more, half fewer. The example game is Poseidon9's (36 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

Poseidon9

36.0 OS · 21/08/2026

Open source match ↗

2 received units · includes a constructor
275 metal received · 83200 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