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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 · 3 steps
    1. Mex ×3
    2. Wind ×3
    3. 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 · 13 steps
    1. Wind ×2
    2. Construction BotCon bot
    3. Wind
    4. GraverobberGraverobber
    5. Wind ×2
    6. GraverobberGraverobber
    7. Mex
    8. Construction BotCon bot
    9. GruntGrunt
    10. Con turret
    11. GruntGrunt
    12. GraverobberGraverobber
    13. ShipyardShipyarddone 2:58 · 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 · 14 steps
    1. Mex
    2. OrcaSubmarinedone 3:19 · typical 4:19
    3. Wind
    4. Mex
    5. Construction ShipCon ship
    6. RiptideFrigatedone 3:48 · typical 4:35
    7. Radar TowerRadar Tower
    8. RiptideFrigate
    9. Mex
    10. ThistleThistle
    11. Mex
    12. Radar TowerRadar Tower
    13. ThistleThistle
    14. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
  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 · 63 steps
    1. Mex
    2. RiptideFrigate
    3. Mex
    4. OppressorDestroyerdone 6:23 · typical 5:52
    5. Mex
    6. Advanced Metal ExtractorT2 mexdone 7:17 · typical 9:22
    7. Death CavalryDeath Cavalry
    8. HerringMissile corvette
    9. RiptideFrigate ×2
    10. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    11. Advanced Metal ExtractorT2 mex
    12. RiptideFrigate
    13. Geothermal PowerplantGeodone 10:23 · typical 7:59
    14. Wind
    15. Advanced Metal ExtractorT2 mex
    16. Wind ×2
    17. OppressorDestroyer
    18. Wind
    19. Advanced Metal ExtractorT2 mex
    20. Wind ×4
    21. Death CavalryDeath Cavalry
    22. Con turret
    23. Advanced Metal ExtractorT2 mex
    24. Wind
    25. RiptideFrigate
    26. Wind ×2
    27. RiptideFrigate
    28. Wind
    29. HerringMissile corvette
    30. Advanced Metal ExtractorT2 mex
    31. Con turret
    32. HerringMissile corvette
    33. Con turret
    34. HerringMissile corvette
    35. Con turret ×2
    36. RiptideFrigate
    37. Con turret
    38. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    39. Metal storage
    40. RiptideFrigate
    41. Metal storage ×2
    42. OppressorDestroyer
    43. Metal storage
    44. Construction ShipCon ship ×3
    45. Mex
    46. Construction ShipCon ship
    47. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    48. Construction ShipCon ship
    49. Advanced Geothermal PowerplantAdvanced Geothermal Powerplantdone 13:59
    50. Naval Radar / Sonar TowerNaval Radar / Sonar Tower ×2
    51. Energy storage ×4
    52. Naval Radar / Sonar TowerNaval Radar / Sonar Tower ×2
    53. Seaplane PlatformSeaplane Platform ×2done 14:25
    54. Dam BusterSeaplane bomber ×4
    55. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    56. Fortification WallFortification Wall
    57. Dam BusterSeaplane bomber
    58. Fortification WallFortification Wall
    59. Dam BusterSeaplane bomber
    60. Fortification WallFortification Wall ×2
    61. Dam BusterSeaplane bomber
    62. Fortification WallFortification Wall ×2
    63. Dam BusterSeaplane bomber

Counts are medians over the build's games: half of them build more, half fewer. The example game is SkyFireEX's (37 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

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

SkyFireEX

37.2 OS · 13/09/2026

Open source match ↗

8 received units · includes a constructor
377 metal received · 39771 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