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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 · 5 steps
    1. Mex ×2
    2. Wind
    3. Mex
    4. Wind ×2
    5. Bot LabBot Labdone 1:04 · 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 · 18 steps
    1. Wind
    2. GraverobberGraverobber
    3. Wind ×2for Air
    4. GraverobberGraverobber
    5. Construction BotCon bot
    6. Wind
    7. GraverobberGraverobber
    8. Construction BotCon bot
    9. TrasherTrasher
    10. Con turret
    11. Mex
    12. Construction BotCon bot ×2
    13. GruntGrunt
    14. Converter
    15. GruntGrunt
    16. Converter
    17. GruntGrunt
    18. ShipyardShipyarddone 3:33 · 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 · 27 steps
    1. GruntGrunt
    2. Converter
    3. GruntGrunt
    4. Mex
    5. GruntGrunt ×2
    6. Energy storage
    7. Radar TowerRadar Tower
    8. Construction ShipCon ship
    9. Mex
    10. Bot LabEat Bot Labreclaimed for its metal
    11. Wind
    12. OrcaSubmarinedone 4:14 · typical 4:17
    13. Converter
    14. Radar TowerRadar Tower
    15. Converter
    16. Mex ×2
    17. Wind
    18. GuardGuard
    19. RiptideFrigatedone 4:40 · typical 4:37
    20. Converter ×2
    21. GuardGuard
    22. Mex
    23. Wind
    24. RiptideFrigate
    25. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    26. Wind
    27. GuardGuard
  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 · 88 steps
    1. Mex
    2. OppressorDestroyerdone 6:00 · typical 5:52
    3. Wind
    4. UrchinUrchin
    5. GuardGuard
    6. Wind
    7. GuardGuard
    8. Wind
    9. Death CavalryDeath Cavalry
    10. GuardGuard
    11. Wind ×3
    12. GuardGuard
    13. Wind
    14. HerringMissile corvette
    15. Wind
    16. RiptideFrigate
    17. Wind ×3
    18. GuardGuard
    19. Wind
    20. Mex
    21. OppressorDestroyer
    22. Wind ×3
    23. GuardGuard
    24. ThistleThistle
    25. Wind
    26. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    27. Wind
    28. Death CavalryDeath Cavalry
    29. GuardGuard
    30. ThistleThistle
    31. HerringMissile corvette ×3
    32. Advanced Metal ExtractorT2 mexdone 9:28 · typical 9:22
    33. Death CavalryDeath Cavalry
    34. ThistleThistle
    35. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    36. Radar TowerRadar Tower
    37. RiptideFrigate
    38. Mex
    39. ThistleThistle
    40. RiptideFrigate
    41. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    42. HerringMissile corvette ×2
    43. Advanced Metal ExtractorT2 mex
    44. Con turret
    45. HerringMissile corvette
    46. RiptideFrigate
    47. Con turret
    48. Wind ×2
    49. Advanced Metal ExtractorT2 mex
    50. UrchinUrchin
    51. Wind ×4
    52. OppressorDestroyer
    53. Wind
    54. Con turret
    55. Wind ×3
    56. Construction ShipCon ship
    57. Wind ×2
    58. HerringMissile corvette
    59. Wind ×5
    60. Advanced Metal ExtractorT2 mex
    61. Wind ×4
    62. Naval Construction Turret
    63. Wind
    64. Construction ShipCon ship
    65. Naval Construction Turret
    66. Wind ×2
    67. Tidal ×2
    68. Wind
    69. Tidal
    70. Wind
    71. Tidal
    72. Wind ×4
    73. Tidal
    74. Wind ×2
    75. Tidal ×7
    76. Advanced ShipyardAdvanced Shipyarddone 13:56
    77. Advanced Metal ExtractorT2 mex
    78. Naval Metal Storage
    79. Tidal ×2
    80. Advanced Construction SubAdvanced Construction Sub
    81. Mex
    82. Advanced Construction SubAdvanced Construction Sub
    83. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 14:49
    84. Advanced Metal ExtractorT2 mex
    85. OasisOasis
    86. Mex
    87. Arrow StormAnti-air shipnot finished by 15:00
    88. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor

Counts are medians over the build's games: half of them build more, half fewer. The example game is sirniho's (37 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

sirniho

37.0 OS · 07/10/2026

Open source match ↗

3 received units · includes a constructor
273 metal received · 71345 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