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Geo sea / Cortex / Economy first / OBSERVED BUILD

Standard geo sea

Cortex Geo sea build order · Supreme Isthmus

Builds a bot lab then shipyard (usually in the cove), eats the bot lab for metal, and pumps out submarines, frigates and destroyers to contest the sea while supporting allies with energy.

Usually shipyard in the cove (98%)

#naval #eco · 1973 distinct matches · 199 players · 80% of Cortex Geo sea games · team won 53% of 2286 · Recently observed

HOW TO PLAY IT

Key timing: Bot Lab by 1:12, Shipyard by 3:17

  1. Open 3 mex into wind, then drop Bot Lab in cove.
  2. Finish Bot Lab, keep teching mex and wind.
  3. Get Shipyard up and start pumping subs and frigates.
  4. Eat the Bot Lab for metal once you have T1 units defending.
  5. Push out submarine, frigate, destroyer to contest sea.
  6. Bring geothermal online and transition toward T2 constructor.

Phase by phase

TYPICAL OF ITS 1973 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
    • Wind Turbine1Windfor allies
    Order
    1. Bot LabBot Lab after 3 mex, 3 winddone ~1:12, middle half 1:07–1:25

    By 0:55 in all: 3 mex · 3 wind

    The example game in this phase · 5 steps
    1. Mex ×3
    2. Windfor Air
    3. Wind ×2
    4. Windfor Air
    5. Bot LabBot Labdone 1:11 · typical 1:12
  2. 2

    Bot Lab to Shipyard

    Economy
    • Metal Extractor1Mex
    • Wind Turbine2Wind
    Order
    1. ShipyardShipyard after 4 mex, 4 wind, 1 energy storagedone ~3:19, middle half 3:02–3:37
    Builders
    • Graverobber3 Graverobber
    • Construction Bot3 Con bot
    Army
    • Grunt1 Grunt

    Some games also: con turret (47%) · trasher (39%) · energy storage (36%)

    By 2:52 in all: 4 mex · 4 wind · 1 energy storage

    The example game in this phase · 25 steps
    1. GraverobberGraverobber ×3
    2. Construction BotCon bot ×5
    3. Wind
    4. Construction BotCon bot
    5. Wind
    6. Mex
    7. Construction BotCon bot
    8. Con turret
    9. Wind
    10. Construction BotCon bot
    11. Converter
    12. GruntGrunt
    13. Wind ×3
    14. Mex
    15. Wind
    16. Converter
    17. Bot LabEat Bot Labreclaimed for its metal
    18. Wind ×2
    19. Con turret
    20. Mex ×2
    21. Converter
    22. Wind
    23. GuardGuard
    24. Wind
    25. ShipyardShipyarddone 4:21 · typical 3:19
  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 (48%) · Guard (48%) · wind (48%) · destroyer (43%) · gunboat (39%)

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

    The example game in this phase · 15 steps
    1. Geothermal PowerplantGeodone 7:17 · typical 8:07
    2. GuardGuard
    3. Wind
    4. Construction ShipCon ship
    5. Wind
    6. Converter
    7. Mex
    8. Radar TowerRadar Tower
    9. RiptideFrigatedone 4:45 · typical 4:40
    10. Wind
    11. GuardGuard
    12. RiptideFrigate
    13. Wind
    14. Mex
    15. Converter
  4. 4

    5:00 to 10:00

    Economy
    • Metal Extractor2Mex
    • Wind Turbine8Wind
    • Energy Converter2Converter
    Order
    1. Geothermal PowerplantGeo after 9 mex, 9 wind, 2 converterin 54% of games
    Builders
    • Construction Turret1 Con turret
    • Death Cavalry2 Death Cavalry
    • Construction Ship1 Con ship
    Army
    • Guard1 Guard
    • Riptide5 Frigate
    Other
    • Naval Radar / Sonar Tower2 Naval Radar / Sonar Tower

    Some games also: Thistle (40%) · submarine (30%)

    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 · 93 steps
    1. Mex
    2. RiptideFrigate
    3. Wind
    4. GuardGuard
    5. Wind
    6. Converter
    7. Radar TowerRadar Tower
    8. Mex
    9. Wind ×2
    10. GuardGuard ×2
    11. RiptideFrigate
    12. Converter
    13. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    14. Wind ×2
    15. GuardGuard
    16. Wind ×2
    17. Converter
    18. RiptideFrigate
    19. GuardGuard
    20. Wind
    21. Mex
    22. GuardGuard
    23. Wind
    24. Converter
    25. Wind ×2
    26. GuardGuard
    27. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    28. Radar TowerRadar Tower
    29. GuardGuard
    30. OppressorDestroyerdone 7:52 · typical 5:55
    31. Wind ×2
    32. Converter
    33. Wind
    34. ThistleThistle
    35. OppressorDestroyer
    36. Wind
    37. GuardGuard
    38. Wind
    39. Converter
    40. Wind
    41. ThistleThistle
    42. Radar TowerRadar Tower
    43. RiptideFrigate
    44. Wind ×2
    45. ThistleThistle
    46. Converter
    47. RiptideFrigate
    48. Wind ×2
    49. Radar TowerRadar Tower
    50. RiptideFrigate
    51. ThistleThistle
    52. Advanced Metal ExtractorT2 mexdone 10:00 · typical 9:24
    53. Wind
    54. Converter
    55. Wind
    56. RiptideFrigate
    57. Wind ×2
    58. RiptideFrigate
    59. Wind
    60. Converter
    61. Wind
    62. RiptideFrigate
    63. Wind
    64. Advanced Metal ExtractorT2 mex
    65. RiptideFrigate
    66. Wind ×3
    67. Converter
    68. RiptideFrigate
    69. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    70. Wind ×3
    71. RiptideFrigate
    72. Advanced Metal ExtractorT2 mex
    73. Converter
    74. Wind
    75. RiptideFrigate
    76. Wind ×2
    77. RiptideFrigate
    78. Wind
    79. OppressorDestroyer
    80. Wind ×2
    81. Converter
    82. Wind
    83. OppressorDestroyer
    84. Wind ×2
    85. OppressorDestroyer
    86. Wind
    87. Advanced Metal ExtractorT2 mex
    88. Converter
    89. Wind ×2
    90. SlingshotSlingshot
    91. OppressorDestroyer
    92. SlingshotSlingshot
    93. Wind ×3

Counts are medians over the build's games: half of them build more, half fewer. The example game is IceJaw's (30 OS, 18/09/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:42 · in 73% of games

You get

  • Finch1 Finch from Airfirst at 1:52 · in 81% of games
  • Hercules1 Light transport from Airfirst at 1:59 · in 75% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 7:44 · in 90% 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

2286 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039800
2:0092900
3:00156100
4:002865051
5:00406814652
6:005417440231
7:006894905526
8:0085781526891
9:001043024351321
10:001255834711987
11:001509046412760
12:001807260173623
13:002132772174344
14:002486384785190
15:002876897226201
WHAT THE NUMBERS SAY

This is the role's own baseline, winning a bit over half its games with steady eco scaling and sea trades roughly matching losses.

  • + Team wins slightly over half of games played.
  • + Metal production scales from ~4k to ~29.5k by 15:00.
  • − Own metal lost climbs to 6875 by 15:00, matching kills closely.
  • − T2 factory only reached in 40% of games, limiting late power.
THE EXAMPLE YOU ARE READING

IceJaw

30.1 OS · 18/09/2026

Open source match ↗

3 received units · includes a constructor
100 metal received · 14489 energy received

Allied construction assistance is unknown. Timings are observations, not a promise of solo reproducibility.

Typical milestones

Bot Lab1:12Middle 50%: 1:07–1:25 · n=2259
Shipyard3:19Middle 50%: 3:02–3:37 · n=2277
Orca4:17Middle 50%: 3:52–4:59 · n=1543
Riptide4:40Middle 50%: 4:09–5:21 · n=2226
Oppressor5:55Middle 50%: 5:13–6:42 · n=2105
Geothermal Powerplant8:07Middle 50%: 7:10–9:25 · n=1542
Advanced Metal Extractor9:24Middle 50%: 8:46–10:21 · n=2003

Played most by

SHOGVN227games of this buildElpoloow178games of this buildsirniho124games of this buildOptimusprimenutt92games of this buildhihimik79games of this build
Standard geo sea · Cortex Geo sea build order · BAR Build Atlas