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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 · 6 steps
    1. Mex ×3
    2. Wind ×3for Air
    3. Wind
    4. Energy storage
    5. Wind
    6. Bot LabBot Labdone 2:03 · 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 · 16 steps
    1. Wind
    2. Construction BotCon bot ×3
    3. GuardGuard
    4. Construction BotCon bot ×2
    5. GraverobberGraverobber
    6. GruntGrunt ×2
    7. Mex
    8. GruntGrunt ×4
    9. GuardGuard
    10. GruntGrunt ×3
    11. Mex
    12. GraverobberGraverobber ×2
    13. GuardGuard
    14. Converter
    15. Mex
    16. ShipyardShipyarddone 4:52 · 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 · 2 steps
    1. Converter ×2
    2. OrcaSubmarinedone 5:12 · typical 4:19
  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 · 129 steps
    1. Radar TowerRadar Tower
    2. Wind
    3. Construction ShipCon ship
    4. Con turret
    5. Wind
    6. GuardGuard
    7. HerringMissile corvette
    8. Mex
    9. Wind ×4
    10. GuardGuard
    11. Mex
    12. Wind ×2
    13. SupporterGunboat
    14. Wind
    15. SupporterGunboat
    16. Wind ×2
    17. Death CavalryDeath Cavalry
    18. Wind
    19. Converter
    20. GuardGuard
    21. Advanced Metal ExtractorT2 mexdone 7:23 · typical 9:22
    22. GuardGuard
    23. OppressorDestroyerdone 7:40 · typical 5:52
    24. Wind
    25. Geothermal PowerplantGeodone 8:23 · typical 7:59
    26. Mex
    27. Wind
    28. Advanced Metal ExtractorT2 mex
    29. GuardGuard
    30. RiptideFrigatedone 8:01 · typical 4:35
    31. GuardGuard
    32. Converter
    33. RiptideFrigate
    34. Converter
    35. Advanced Metal ExtractorT2 mex
    36. Converter
    37. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    38. Twin GuardTwin Guard
    39. HerringMissile corvette
    40. Converter
    41. HerringMissile corvette
    42. Converter
    43. OppressorDestroyer
    44. RiptideFrigate
    45. Advanced Metal ExtractorT2 mex
    46. Dragon's TeethDragon's Teeth ×2
    47. RiptideFrigate
    48. Dragon's TeethDragon's Teeth ×4
    49. RiptideFrigate
    50. Dragon's TeethDragon's Teeth ×3
    51. HerringMissile corvette
    52. Dragon's TeethDragon's Teeth
    53. OppressorDestroyer
    54. Dragon's TeethDragon's Teeth ×6
    55. Advanced Metal ExtractorT2 mex
    56. Construction ShipCon ship
    57. Dragon's TeethDragon's Teeth ×2
    58. Construction ShipCon ship
    59. Dragon's TeethDragon's Teeth ×2
    60. RiptideFrigate
    61. Dragon's TeethDragon's Teeth ×3
    62. RiptideFrigate
    63. Tidal
    64. Dragon's TeethDragon's Teeth ×2
    65. Tidal
    66. Death CavalryDeath Cavalry
    67. Dragon's TeethDragon's Teeth
    68. Tidal
    69. Dragon's TeethDragon's Teeth
    70. Advanced Metal ExtractorT2 mex
    71. Dragon's TeethDragon's Teeth
    72. Tidal
    73. Death CavalryDeath Cavalry
    74. Tidal ×3
    75. Death CavalryDeath Cavalry
    76. Naval Construction Turret
    77. Death CavalryDeath Cavalry
    78. Naval Construction Turret
    79. Tidal
    80. Death CavalryDeath Cavalry
    81. Con turret
    82. Tidal ×2
    83. Con turret
    84. Tidal ×3
    85. Con turret
    86. RiptideFrigate
    87. Tidal ×3
    88. Con turret
    89. Tidal
    90. HerringMissile corvette
    91. Tidal ×2
    92. Advanced Bot LabAdvanced Bot Labdone 13:40
    93. OppressorDestroyer
    94. Tidal ×4
    95. Advanced Geothermal PowerplantAdvanced Geothermal Powerplantnot finished by 15:00
    96. Tidal ×2
    97. Dragon's MawDragon's Maw
    98. Tidal ×2
    99. Advanced Construction BotT2 con bot
    100. RiptideFrigate
    101. Tidal ×2
    102. Wind
    103. Tidal
    104. SkuttleCrawling bombdone 14:18
    105. HerringMissile corvette
    106. Dragon's MawDragon's Maw
    107. Tidal
    108. Wind
    109. Tidal
    110. HerringMissile corvette
    111. Tidal ×2
    112. Wind
    113. HerringMissile corvette
    114. Tidal ×2
    115. Wind
    116. SkuttleCrawling bomb
    117. Tidal
    118. HerringMissile corvette
    119. Tidal
    120. Dragon's MawDragon's Maw
    121. Wind
    122. HerringMissile corvette
    123. Tidal ×2
    124. Wind
    125. TwitcherTwitcher
    126. RiptideFrigate
    127. Wind
    128. Tidal
    129. TwitcherTwitcher

Counts are medians over the build's games: half of them build more, half fewer. The example game is enderOS1's (37 OS, 09/08/2026); 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

enderOS1

36.6 OS · 09/08/2026

Open source match ↗

5 received units · includes a constructor
68 metal received · 68011 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
Standard geo sea · Cortex Geo sea build order · BAR Build Atlas