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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 · 993 distinct matches · 101 players · 83% of Cortex Geo sea games · team won 52% of 1114 · 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 993 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 1:07–1:26

    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 ×8
    3. Energy storage
    4. Bot LabBot Labdone 1:53 · 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 · 1 energy storage

    The example game in this phase · 11 steps
    1. Construction BotCon bot ×2
    2. GraverobberGraverobber
    3. Mex
    4. GraverobberGraverobber
    5. TrasherTrasher
    6. GruntGrunt ×2
    7. Mex
    8. Radar TowerRadar Tower
    9. Mex
    10. GruntGrunt
    11. ShipyardShipyarddone 3:35 · 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 (49%) · 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 · 18 steps
    1. GruntGrunt
    2. GuardGuard
    3. GruntGrunt
    4. HerringMissile corvette
    5. GruntGrunt
    6. Radar TowerRadar Tower
    7. Construction ShipCon ship
    8. GruntGrunt
    9. GuardGuard
    10. RiptideFrigatedone 4:11 · typical 4:35
    11. GruntGrunt
    12. GuardGuard
    13. Mex
    14. OppressorDestroyerdone 5:28 · typical 5:52
    15. Mex
    16. Wind
    17. UrchinUrchin
    18. 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
    • Guard1 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 · 58 steps
    1. Wind ×2
    2. Death CavalryDeath Cavalry
    3. Naval Construction Turret
    4. Wind
    5. Converter
    6. Wind
    7. RiptideFrigate ×2
    8. Mex
    9. Wind
    10. Naval Construction Turret
    11. UrchinUrchin
    12. Converter
    13. HerringMissile corvette
    14. Tidal
    15. Wind
    16. RiptideFrigate
    17. Tidal
    18. OppressorDestroyer
    19. Wind
    20. Tidal
    21. Converter
    22. Tidal
    23. Death CavalryDeath Cavalry
    24. Wind
    25. Tidal ×2
    26. RiptideFrigate
    27. Converter
    28. Wind
    29. RiptideFrigate
    30. Advanced Metal ExtractorT2 mexdone 9:16 · typical 9:21
    31. HerringMissile corvette
    32. RiptideFrigate
    33. Wind
    34. OppressorDestroyer
    35. Converter
    36. Wind
    37. Death CavalryDeath Cavalry
    38. RiptideFrigate
    39. Converter
    40. Wind
    41. Mex
    42. RiptideFrigate
    43. HerringMissile corvette
    44. Construction ShipCon ship
    45. Wind
    46. Construction ShipCon ship
    47. Advanced Metal ExtractorT2 mex
    48. Converter
    49. Construction ShipCon ship ×2
    50. Wind
    51. Construction ShipCon ship ×3
    52. Converter
    53. Advanced ShipyardAdvanced Shipyarddone 10:26
    54. Advanced Metal ExtractorT2 mex
    55. Advanced Construction SubAdvanced Construction Sub
    56. PathfinderPathfinder
    57. Naval Advanced Metal ExtractorNaval Advanced Metal Extractornot finished by 15:00
    58. OasisOasis

Counts are medians over the build's games: half of them build more, half fewer. The example game is Hummell's (47 OS, 02/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:48 · in 71% 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 7:43 · 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

1114 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039700
2:0092800
3:00156700
4:002899051
5:00410913552
6:005461441242
7:006946931551
8:0086181570906
9:001049724501367
10:001261036252062
11:001521848702893
12:001810063303773
13:002136173614451
14:002499586015363
15:002874196886321
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

Hummell

46.5 OS · 02/10/2026

Open source match ↗

15 received units · includes a constructor
1536 metal received · 55062 energy received

Allied construction assistance is unknown. Timings are observations, not a promise of solo reproducibility.

Typical milestones

Bot Lab1:12Middle 50%: 1:07–1:26 · n=1103
Shipyard3:17Middle 50%: 3:02–3:33 · n=1108
Orca4:19Middle 50%: 3:54–5:00 · n=769
Riptide4:35Middle 50%: 4:07–5:20 · n=1081
Oppressor5:52Middle 50%: 5:08–6:36 · n=1009
Geothermal Powerplant8:00Middle 50%: 7:01–9:02 · n=664
Advanced Metal Extractor9:21Middle 50%: 8:45–10:10 · n=955

Played most by

sirniho123games of this buildSHOGVN94games of this buildOptimusprimenutt84games of this buildPRO_Rerory48games of this buildhihimik41games of this build