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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 ×2
    2. Wind
    3. Mex
    4. Wind ×2
    5. Windfor Air
    6. Bot LabBot Labdone 1:10 · 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 · 8 steps
    1. Windfor Air
    2. GraverobberGraverobber
    3. Construction BotCon bot ×3
    4. Mex
    5. GraverobberGraverobber ×2
    6. GruntGrunt ×2
    7. Construction BotCon bot
    8. ShipyardShipyarddone 2:55 · 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 · 16 steps
    1. Mex
    2. Energy storage
    3. SupporterGunboat ×5
    4. Mex
    5. Construction ShipCon ship
    6. SupporterGunboat ×2
    7. Mex
    8. SupporterGunboat
    9. Radar TowerRadar Tower
    10. SupporterGunboat ×2
    11. OrcaSubmarinedone 4:24 · typical 4:19
    12. GuardGuard
    13. Mex
    14. OrcaSubmarine
    15. GuardGuard
    16. OrcaSubmarine
  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 · 98 steps
    1. Mex
    2. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    3. Death CavalryDeath Cavalry
    4. RiptideFrigate ×2done 6:08 · typical 4:35
    5. Geothermal PowerplantGeodone 9:18 · typical 7:59
    6. RiptideFrigate
    7. SlingshotSlingshot
    8. OrcaSubmarine
    9. Advanced Metal ExtractorT2 mexdone 8:57 · typical 9:22
    10. RiptideFrigate
    11. OrcaSubmarine
    12. HerringMissile corvette
    13. Construction ShipCon ship
    14. HerringMissile corvette ×2
    15. OppressorDestroyernot finished by 15:00 · typical 5:52
    16. Con turret
    17. Construction ShipCon ship
    18. HerringMissile corvette
    19. SupporterGunboat ×2
    20. UrchinUrchin
    21. GoonGoon
    22. SupporterGunboat
    23. Converter
    24. Construction ShipCon ship
    25. Wind
    26. Advanced Metal ExtractorT2 mex
    27. Wind ×2
    28. Converter
    29. Wind
    30. SupporterGunboat
    31. Radar TowerRadar Tower
    32. Wind
    33. SupporterGunboat ×2
    34. Wind
    35. GuardGuard
    36. Construction ShipCon ship
    37. Converter
    38. Wind
    39. Naval Construction Turret
    40. Mex
    41. Advanced Metal ExtractorT2 mex
    42. GuardGuard
    43. Wind ×2
    44. Naval Construction Turret
    45. GuardGuard
    46. Converter
    47. Advanced ShipyardAdvanced Shipyarddone 11:43
    48. OppressorDestroyer
    49. Wind
    50. Mex
    51. Wind
    52. Converter
    53. GuardGuard
    54. Mex
    55. Wind
    56. Advanced Metal ExtractorT2 mex
    57. GuardGuard
    58. Converter
    59. Wind
    60. Advanced Construction SubAdvanced Construction Sub
    61. Wind ×2
    62. GuardGuard
    63. Converter
    64. Wind
    65. PathfinderPathfinder
    66. Wind
    67. PathfinderPathfinder
    68. Wind
    69. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 13:05
    70. PathfinderPathfinder
    71. Wind
    72. PathfinderPathfinder
    73. Wind
    74. PathfinderPathfinder
    75. BrimstoneAnti-swarm shipdone 12:50
    76. Advanced Metal ExtractorT2 mex
    77. GuardGuard
    78. BrimstoneAnti-swarm ship
    79. GuardGuard
    80. BrimstoneAnti-swarm ship
    81. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    82. PhantasmRadar jammer ship
    83. OasisOasis
    84. PhantasmRadar jammer ship
    85. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    86. GuardGuard ×2
    87. MessengerCruise missile shipdone 14:02
    88. GuardGuard
    89. Advanced Metal ExtractorT2 mex
    90. UrchinUrchin
    91. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    92. BeholderBeholder ×2
    93. MessengerCruise missile ship
    94. GuardGuard
    95. MessengerCruise missile ship
    96. Dragon's TeethDragon's Teeth
    97. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    98. Dragon's TeethDragon's Teeth

Counts are medians over the build's games: half of them build more, half fewer. The example game is Kelin's (41 OS, 25/08/2026); 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

Kelin

41.0 OS · 25/08/2026

Open source match ↗

3 received units · includes a constructor
53 metal received · 38957 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