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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 ×2
    3. Bot LabBot Labdone 0:57 · 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 · 26 steps
    1. Windfor Air
    2. Construction BotCon bot
    3. Wind
    4. GraverobberGraverobber
    5. Wind
    6. Windfor Air
    7. GraverobberGraverobber
    8. Windfor Air
    9. Mex
    10. Construction BotCon bot
    11. GruntGrunt
    12. Con turret
    13. GruntGrunt
    14. GraverobberGraverobber
    15. Mex
    16. GruntGrunt ×3
    17. Wind
    18. GruntGrunt
    19. Twin GuardTwin Guard
    20. GruntGrunt
    21. Mex
    22. GruntGrunt ×2
    23. Wind
    24. GruntGrunt ×3
    25. Radar TowerRadar Tower
    26. ShipyardShipyarddone 4:07 · 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 · 5 steps
    1. OrcaSubmarinedone 4:29 · typical 4:19
    2. GuardGuard
    3. Construction ShipCon ship
    4. RiptideFrigate ×2done 4:50 · typical 4:35
    5. Mex ×2
  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 · 116 steps
    1. RiptideFrigate
    2. OppressorDestroyerdone 6:00 · typical 5:52
    3. Mex ×2
    4. Radar TowerRadar Tower
    5. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    6. HerringMissile corvette
    7. Death CavalryDeath Cavalry
    8. GuardGuard
    9. Mex
    10. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    11. GuardGuard
    12. RiptideFrigate
    13. Con turret
    14. Wind
    15. RiptideFrigate
    16. Advanced Metal ExtractorT2 mexdone 9:12 · typical 9:22
    17. Wind ×3
    18. RiptideFrigate
    19. Wind
    20. Mex
    21. OppressorDestroyer
    22. Wind ×3
    23. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    24. Death CavalryDeath Cavalry
    25. Wind ×2
    26. Advanced Metal ExtractorT2 mex
    27. RiptideFrigate
    28. Wind ×4
    29. HerringMissile corvette
    30. Wind
    31. HerringMissile corvette
    32. Wind ×3
    33. Energy storage
    34. Advanced Metal ExtractorT2 mex
    35. OppressorDestroyer
    36. Wind
    37. Mex
    38. Metal storage
    39. Wind
    40. Metal storage
    41. Mex
    42. Wind
    43. Advanced Metal ExtractorT2 mex
    44. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    45. Wind ×2
    46. Construction ShipCon ship
    47. Wind
    48. Construction ShipCon ship
    49. Wind ×2
    50. Construction ShipCon ship
    51. Wind
    52. Construction ShipCon ship
    53. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    54. Wind
    55. Construction ShipCon ship
    56. Wind
    57. Naval Construction Turret
    58. Wind ×2
    59. Naval Construction Turret
    60. Advanced Metal ExtractorT2 mex
    61. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    62. Naval Construction Turret
    63. Wind
    64. Naval Construction Turret ×3
    65. Wind
    66. Con turret
    67. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    68. Naval Construction Turret ×2
    69. Con turret
    70. Naval Construction Turret ×2
    71. Wind
    72. Con turret
    73. Advanced Metal ExtractorT2 mex
    74. Naval Construction Turret
    75. Con turret
    76. Naval Construction Turret ×2
    77. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    78. Wind
    79. Naval Construction Turret
    80. Wind ×2
    81. Naval Construction Turret
    82. Wind ×7
    83. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    84. Wind
    85. Advanced ShipyardAdvanced Shipyarddone 14:07
    86. Wind
    87. Advanced Construction SubAdvanced Construction Sub
    88. Wind
    89. Tidal
    90. PathfinderPathfinder
    91. Wind ×2
    92. PathfinderPathfinder
    93. Tidal
    94. Wind
    95. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 14:49
    96. PathfinderPathfinder
    97. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    98. PathfinderPathfinder
    99. Wind
    100. Tidal
    101. PathfinderPathfinder
    102. Wind
    103. OasisOasis
    104. Wind
    105. Advanced Geothermal PowerplantAdvanced Geothermal Powerplantnot finished by 15:00
    106. Wind
    107. Tidal
    108. Wind
    109. OasisOasis
    110. Wind
    111. Tidal
    112. Wind
    113. OasisOasis
    114. Wind
    115. Tidal
    116. Wind

Counts are medians over the build's games: half of them build more, half fewer. The example game is SkyFireEX's (37 OS, 19/09/2026); 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

36.8 OS · 19/09/2026

Open source match ↗

6 received units · includes a constructor
756 metal received · 81072 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