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Geo sea / Cortex / Economy first / OBSERVED BUILD

Standard geo sea

Cortex Geo sea build order · Supreme Isthmus

The usual Cove-side sea opening: bot lab for an early defensive bot, shipyard in the cove, then frigates, destroyers and submarines to contest the sea and defend the base.

Usually shipyard in the cove (98%)

#naval #defence · 1098 distinct matches · 104 players · 83% of Cortex Geo sea games · team won 52% of 1227 · Recently observed

HOW TO PLAY IT

Key timing: Shipyard by 3:16

  1. Grab 3 mex and open wind while laying down bot lab.
  2. Get bot lab up then push straight into shipyard.
  3. Finish shipyard, start pumping subs and frigates to contest sea.
  4. Add submarine, frigate and destroyer to hold sea lanes.
  5. Bring geo online and transition into mixed navy.

Phase by phase

TYPICAL OF ITS 1098 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 (48%)

    By 0:55 in all: 3 mex · 3 wind

    The example game in this phase · 4 steps
    1. Mex ×3
    2. Windfor Air
    3. Wind ×2
    4. Bot LabBot Labdone 1:03 · 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 (45%) · trasher (40%) · energy storage (33%) · wind for allies (31%)

    By 2:51 in all: 4 mex · 5 wind · 1 energy storage

    The example game in this phase · 30 steps
    1. Wind
    2. GraverobberGraverobber
    3. Wind
    4. Construction BotCon bot
    5. Wind
    6. Construction BotCon bot
    7. GraverobberGraverobber
    8. Mex
    9. Energy storage
    10. GruntGrunt ×2
    11. Construction BotCon bot
    12. Mex
    13. GraverobberGraverobber
    14. Wind
    15. GuardGuard
    16. Converter
    17. Wind ×2
    18. GruntGrunt
    19. Wind
    20. GruntGrunt
    21. GuardGuard
    22. Converter
    23. GruntGrunt
    24. Mex
    25. Converter ×2
    26. GruntGrunt
    27. Converter
    28. GruntGrunt
    29. Radar TowerRadar Tower
    30. ShipyardShipyarddone 4:09 · typical 3:17
  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%) · Guard (49%) · wind (48%) · destroyer (45%) · gunboat (39%)

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

    The example game in this phase · 12 steps
    1. Converter
    2. GuardGuard
    3. SupporterGunboat ×3
    4. Bot LabEat Bot Labreclaimed for its metal
    5. GuardGuard
    6. Construction ShipCon ship
    7. HerringMissile corvette
    8. Converter
    9. HerringMissile corvette
    10. ThistleThistle
    11. HerringMissile corvette
    12. Construction ShipCon ship
  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 · 106 steps
    1. RiptideFrigatedone 5:13 · typical 4:37
    2. Wind
    3. Mex
    4. RiptideFrigate
    5. HerringMissile corvette
    6. Wind
    7. OppressorDestroyerdone 6:23 · typical 5:52
    8. Mex
    9. Wind
    10. GuardGuard
    11. Geothermal PowerplantGeodone 8:55 · typical 8:00
    12. Death CavalryDeath Cavalry
    13. Wind
    14. GuardGuard
    15. Wind
    16. Mex
    17. HerringMissile corvette ×2
    18. Wind
    19. RiptideFrigate
    20. Mex
    21. RiptideFrigate
    22. Wind
    23. Mex
    24. OppressorDestroyer
    25. Mex
    26. Wind
    27. Radar TowerRadar Tower
    28. Wind
    29. OppressorDestroyer
    30. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    31. Wind
    32. GuardGuard
    33. Advanced Metal ExtractorT2 mexdone 9:58 · typical 9:22
    34. GuardGuard
    35. Construction ShipCon ship ×3
    36. Converter
    37. GuardGuard
    38. Construction ShipCon ship
    39. Naval Construction Turret ×2
    40. Mex
    41. Advanced Metal ExtractorT2 mex
    42. Converter
    43. Naval Construction Turret
    44. Advanced ShipyardAdvanced Shipyarddone 11:41
    45. ThistleThistle
    46. Tidal
    47. Mex
    48. Converter
    49. Tidal
    50. GuardGuard
    51. Tidal ×2
    52. Advanced Metal ExtractorT2 mex
    53. Tidal
    54. Mex
    55. Converter
    56. Tidal
    57. Wind
    58. Tidal
    59. ShipyardEat Shipyardreclaimed for its metal
    60. Tidal
    61. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    62. Tidal
    63. Wind
    64. Advanced Construction SubAdvanced Construction Sub
    65. GuardGuard
    66. Tidal
    67. GuardGuard
    68. Tidal
    69. Wind
    70. PathfinderPathfinder
    71. Tidal
    72. PathfinderPathfinder
    73. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 12:35
    74. Advanced Metal ExtractorT2 mex
    75. Tidal
    76. Wind
    77. Tidal
    78. Twin GuardTwin Guard
    79. DespotBattleshipdone 13:33
    80. Tidal
    81. Wind
    82. Tidal
    83. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    84. Tidal
    85. Wind
    86. Naval Construction Turret
    87. Wind
    88. Twin GuardTwin Guard
    89. PhantasmRadar jammer ship
    90. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    91. Wind ×2
    92. Advanced Metal ExtractorT2 mex
    93. Naval Construction Turret
    94. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    95. OasisOasis
    96. Vehicle PlantVehicle Plantdone 14:32
    97. Wind
    98. Twin GuardTwin Guard
    99. OasisOasis
    100. Dragon's MawDragon's Maw
    101. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    102. SlingshotSlingshot ×2
    103. Wind
    104. SlingshotSlingshot
    105. BruteBrute
    106. Arrow StormAnti-air shipnot finished by 15:00

Counts are medians over the build's games: half of them build more, half fewer. The example game is TheSituation's (52 OS, 07/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:48 · in 70% of games

You get

  • Finch1 Finch from Airfirst at 1:51 · in 83% of games
  • Hercules1 Light transport from Airfirst at 2:00 · in 74% 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

1227 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039700
2:0092800
3:00156600
4:002894051
5:00410315052
6:005454461231
7:006936931545
8:0086071578891
9:001047124951344
10:001263036252031
11:001519548242838
12:001810762243720
13:002139973574441
14:002501686445353
15:002886197626354
WHAT THE NUMBERS SAY

Matches the role's own norm almost exactly, sitting at the typical 52% team win rate for Geo sea.

  • + Reliable timing: bot lab by 1:12 and shipyard by 3:16 in the middle half of games.
  • − Own metal lost climbs to 6854 by 15:00, showing sea fights stay costly.
THE EXAMPLE YOU ARE READING

TheSituation

51.5 OS · 07/10/2026

Open source match ↗

3 received units · includes a constructor
74 metal received · 31380 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=1207
Shipyard3:17Middle 50%: 3:02–3:33 · n=1219
Orca4:17Middle 50%: 3:51–4:59 · n=845
Riptide4:37Middle 50%: 4:08–5:21 · n=1192
Oppressor5:52Middle 50%: 5:08–6:36 · n=1114
Geothermal Powerplant8:00Middle 50%: 7:01–9:03 · n=729
Advanced Metal Extractor9:22Middle 50%: 8:45–10:10 · n=1060

Played most by

sirniho125games of this buildSHOGVN100games of this buildOptimusprimenutt86games of this buildPRO_Rerory52games of this buildTheSituation43games of this build