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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 · 3 steps
    1. Mex ×3
    2. Wind ×4
    3. Bot LabBot Labdone 1:22 · 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 · 9 steps
    1. Wind ×3
    2. GraverobberGraverobber ×2
    3. Wind
    4. Construction BotCon bot
    5. GruntGruntfor Pond
    6. Construction BotCon bot ×4
    7. Con turret
    8. Mex
    9. ShipyardShipyarddone 3:21 · 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 · 13 steps
    1. Construction ShipCon ship
    2. Construction BotCon bot
    3. HerringMissile corvette
    4. Mex
    5. HerringMissile corvette
    6. RiptideFrigatedone 4:39 · typical 4:35
    7. ThistleThistle
    8. Mex ×3
    9. RiptideFrigate
    10. Mex
    11. Energy storage
    12. Geothermal PowerplantGeodone 6:49 · typical 8:00
    13. RiptideFrigate
  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 · 124 steps
    1. Mex
    2. RiptideFrigate
    3. ThistleThistle
    4. GuardGuard
    5. OppressorDestroyerdone 6:40 · typical 5:52
    6. Mex
    7. GuardGuard
    8. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    9. ThistleThistle
    10. Construction ShipCon ship
    11. GuardGuard
    12. ThistleThistle
    13. Construction ShipCon ship
    14. ShipyardShipyarddone 7:20
    15. GuardGuard
    16. Construction ShipCon ship
    17. HerringMissile corvette
    18. GuardGuard
    19. HerringMissile corvette
    20. RiptideFrigate ×2
    21. Wind
    22. Advanced Metal ExtractorT2 mexdone 8:58 · typical 9:21
    23. RiptideFrigate
    24. GuardGuard
    25. RiptideFrigate
    26. Wind ×2
    27. OppressorDestroyer
    28. Naval Construction Turret
    29. Wind
    30. Advanced Metal ExtractorT2 mex
    31. Naval Construction Turret
    32. Advanced Metal ExtractorT2 mex
    33. GuardGuard
    34. Naval Construction Turret
    35. Naval Energy Storage
    36. Wind
    37. Construction ShipCon ship
    38. HerringMissile corvette
    39. Naval Metal Storage
    40. Tidal
    41. Wind
    42. HerringMissile corvette
    43. Tidal
    44. Mex
    45. Tidal ×2
    46. HerringMissile corvette
    47. Tidal
    48. Amphibious ComplexAmphibious Complexdone 10:21
    49. Wind
    50. Tidal ×2
    51. Mex
    52. Wind
    53. Mex
    54. GarpikeGarpike
    55. SalamanderSalamander
    56. Tidal
    57. Naval Energy Converter
    58. Mex
    59. Wind
    60. Naval Energy Converter
    61. SalamanderSalamander
    62. Naval Energy Converter
    63. Mex
    64. Wind
    65. Naval Energy Converter
    66. SalamanderSalamander
    67. Mex
    68. Naval Energy Converter
    69. Mex
    70. Wind
    71. SalamanderSalamander
    72. Naval Energy Converter
    73. Advanced Metal ExtractorT2 mex
    74. Wind
    75. Energy storage
    76. SalamanderSalamander
    77. Naval Energy Converter
    78. Wind
    79. Naval Energy Converter
    80. SalamanderSalamander
    81. Mex
    82. Tidal ×2
    83. Wind
    84. SalamanderSalamander
    85. Tidal ×3
    86. Geothermal PowerplantGeo
    87. Advanced Metal ExtractorT2 mex
    88. SalamanderSalamander
    89. Tidal
    90. Wind
    91. Tidal
    92. SalamanderSalamander
    93. Tidal
    94. Naval Construction Turret
    95. Wind
    96. Tidal
    97. Naval Construction Turret ×2
    98. SalamanderSalamander
    99. Naval Construction Turret
    100. Tidal
    101. Naval Construction Turret
    102. Advanced ShipyardAdvanced Shipyarddone 13:54
    103. Wind
    104. Tidal
    105. Advanced Metal ExtractorT2 mex
    106. Wind
    107. Naval Construction Turret
    108. Tidal ×3
    109. Wind
    110. Tidal
    111. Bot LabBot Labdone 14:21
    112. Tidal ×3
    113. GruntGrunt
    114. Tidal ×2
    115. GruntGrunt
    116. Wind
    117. GruntGrunt ×7
    118. BrimstoneAnti-swarm shipdone 14:57
    119. GruntGrunt ×2
    120. Wind
    121. GruntGrunt
    122. Advanced Metal ExtractorT2 mex
    123. BrimstoneAnti-swarm ship
    124. GruntGrunt

Counts are medians over the build's games: half of them build more, half fewer. The example game is [Grump]Grumpiness's (48 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

[Grump]Grumpiness

48.2 OS · 02/10/2026

Open source match ↗

11 received units · includes a constructor
149 metal received · 62227 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