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Geo sea / Cortex / Economy first / OBSERVED BUILD

Standard geo sea

Cortex Geo sea build order · Supreme Isthmus

Builds a bot lab then shipyard (usually in the cove), eats the bot lab for metal, and pumps out submarines, frigates and destroyers to contest the sea while supporting allies with energy.

Usually shipyard in the cove (98%)

#naval #eco · 1869 distinct matches · 194 players · 80% of Cortex Geo sea games · team won 53% of 2174 · Recently observed

HOW TO PLAY IT

Key timing: Bot Lab by 1:12, Shipyard by 3:17

  1. Open 3 mex into wind, then drop Bot Lab in cove.
  2. Finish Bot Lab, keep teching mex and wind.
  3. Get Shipyard up and start pumping subs and frigates.
  4. Eat the Bot Lab for metal once you have T1 units defending.
  5. Push out submarine, frigate, destroyer to contest sea.
  6. Bring geothermal online and transition toward T2 constructor.

Phase by phase

TYPICAL OF ITS 1869 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
    • Wind Turbine1Windfor allies
    Order
    1. Bot LabBot Lab after 3 mex, 3 winddone ~1:13, middle half 1:08–1:25

    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 1:03 · typical 1:13
  2. 2

    Bot Lab to Shipyard

    Economy
    • Metal Extractor1Mex
    • Wind Turbine1Wind
    Order
    1. ShipyardShipyard after 4 mex, 4 wind, 1 energy storagedone ~3:19, middle half 3:02–3:37
    Builders
    • Construction Bot3 Con bot
    • Graverobber2 Graverobber
    Army
    • Grunt1 Grunt

    Some games also: con turret (47%) · trasher (39%) · energy storage (37%)

    By 2:52 in all: 4 mex · 4 wind · 1 energy storage

    The example game in this phase · 8 steps
    1. Wind
    2. Construction BotCon bot ×2
    3. GraverobberGraverobber
    4. Mex
    5. GraverobberGraverobber
    6. GruntGrunt
    7. Radar TowerRadar Tower
    8. ShipyardShipyarddone 2:51 · typical 3:19
  3. 3

    Shipyard to 5:00

    Economy
    • Metal Extractor4Mex
    Order
    1. Bot LabEat Bot Lab
    Builders
    • Construction Ship1 Con ship
    Army
    • Riptide2 Frigate
    • Orca1 Submarine
    Other
    • Radar Tower1 Radar Tower

    Some games also: missile corvette (49%) · wind (48%) · Guard (48%) · destroyer (44%) · gunboat (39%)

    By 5:00 in all: 8 mex · 6 wind · 1 energy storage · 1 con turret

    The example game in this phase · 15 steps
    1. Mex ×2
    2. Construction ShipCon ship
    3. OrcaSubmarinedone 3:20 · typical 4:18
    4. Wind
    5. HerringMissile corvette
    6. OppressorDestroyerdone 4:07 · typical 5:55
    7. Mex ×2
    8. Bot LabEat Bot Labreclaimed for its metal
    9. RiptideFrigatedone 4:21 · typical 4:40
    10. Wind
    11. RiptideFrigate
    12. Mex ×2
    13. Wind
    14. RiptideFrigate
    15. Death CavalryDeath Cavalry
  4. 4

    5:00 to 10:00

    Economy
    • Metal Extractor2Mex
    • Wind Turbine8Wind
    • Energy Converter2Converter
    Order
    1. Geothermal PowerplantGeo after 9 mex, 9 wind, 2 converterin 54% of games
    Builders
    • Construction Turret1 Con turret
    • Death Cavalry2 Death Cavalry
    • Construction Ship1 Con ship
    Army
    • Guard1 Guard
    • Riptide5 Frigate
    Other
    • Naval Radar / Sonar Tower2 Naval Radar / Sonar Tower

    Some games also: Thistle (40%) · submarine (31%)

    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 · 96 steps
    1. Wind ×2
    2. Construction ShipCon ship
    3. RiptideFrigate
    4. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    5. Wind
    6. OppressorDestroyer
    7. Energy storage
    8. Wind
    9. Naval Construction Turret
    10. OppressorDestroyer
    11. Wind
    12. Mex
    13. Wind ×2
    14. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    15. RiptideFrigate
    16. OppressorDestroyer
    17. Wind ×2
    18. Death CavalryDeath Cavalry
    19. Naval Construction Turret
    20. Geothermal PowerplantGeodone 10:51 · typical 8:09
    21. Wind
    22. RiptideFrigate ×3
    23. Wind
    24. Advanced Metal ExtractorT2 mexdone 10:12 · typical 9:24
    25. OppressorDestroyer
    26. Wind ×2
    27. HerringMissile corvette
    28. Wind
    29. HerringMissile corvette ×2
    30. Death CavalryDeath Cavalry
    31. Wind
    32. Mex
    33. RiptideFrigate
    34. Wind
    35. Advanced Metal ExtractorT2 mex
    36. RiptideFrigate
    37. Wind
    38. RiptideFrigate
    39. UrchinUrchin
    40. Converter
    41. Wind
    42. OppressorDestroyer
    43. Death CavalryDeath Cavalry
    44. UrchinUrchin
    45. Construction ShipCon ship
    46. UrchinUrchin
    47. Advanced Metal ExtractorT2 mex
    48. Construction ShipCon ship
    49. Wind
    50. Converter
    51. UrchinUrchin
    52. Construction ShipCon ship
    53. Wind
    54. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    55. Construction ShipCon ship
    56. Converter
    57. Wind
    58. Advanced Metal ExtractorT2 mex
    59. Wind
    60. Converter
    61. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    62. Naval Construction Turret
    63. Naval Metal Storage
    64. Con turret
    65. Naval Construction Turret
    66. Converter
    67. Naval Construction Turret
    68. Advanced Metal ExtractorT2 mex
    69. Naval Construction Turret ×2
    70. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    71. Naval Construction Turret ×2
    72. Con turret
    73. Tidal
    74. ShipyardEat Shipyardreclaimed for its metal
    75. Naval Construction Turret ×2
    76. Tidal
    77. Naval Construction Turret
    78. Advanced ShipyardAdvanced Shipyarddone 14:03
    79. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    80. Mex
    81. Tidal
    82. Advanced Metal ExtractorT2 mex
    83. PhantasmRadar jammer ship
    84. Tidal
    85. Advanced Construction SubAdvanced Construction Sub
    86. Tidal
    87. Mex
    88. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    89. PathfinderPathfinder
    90. Tidal
    91. PathfinderPathfinder
    92. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    93. PathfinderPathfinder
    94. Tidal
    95. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    96. PathfinderPathfinder ×2

Counts are medians over the build's games: half of them build more, half fewer. The example game is SkyFireEX's (41 OS, 15/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:43 · in 73% of games

You get

  • Finch1 Finch from Airfirst at 1:52 · in 82% of games
  • Hercules1 Light transport from Airfirst at 1:59 · in 76% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 7:43 · in 90% 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

2174 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039800
2:0092900
3:00155800
4:002865051
5:00406614652
6:005414440232
7:006892906536
8:0085771532891
9:001042524401334
10:001255234872005
11:001509046512780
12:001805860243641
13:002126872114363
14:002480384495207
15:002867796846199
WHAT THE NUMBERS SAY

This is the role's own baseline, winning a bit over half its games with steady eco scaling and sea trades roughly matching losses.

  • + Team wins slightly over half of games played.
  • + Metal production scales from ~4k to ~29.5k by 15:00.
  • − Own metal lost climbs to 6875 by 15:00, matching kills closely.
  • − T2 factory only reached in 40% of games, limiting late power.
THE EXAMPLE YOU ARE READING

SkyFireEX

40.8 OS · 15/10/2026

Open source match ↗

31 received units · includes a constructor
994 metal received · 16359 energy received

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

Typical milestones

Bot Lab1:13Middle 50%: 1:08–1:25 · n=2147
Shipyard3:19Middle 50%: 3:02–3:37 · n=2165
Orca4:18Middle 50%: 3:53–5:00 · n=1468
Riptide4:40Middle 50%: 4:09–5:23 · n=2115
Oppressor5:55Middle 50%: 5:12–6:40 · n=1996
Geothermal Powerplant8:09Middle 50%: 7:11–9:24 · n=1443
Advanced Metal Extractor9:24Middle 50%: 8:46–10:21 · n=1895

Played most by

SHOGVN222games of this buildElpoloow127games of this buildsirniho125games of this buildOptimusprimenutt94games of this buildhihimik78games of this build