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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 (97%)

#naval #eco · 1886 distinct matches · 195 players · 80% of Cortex Geo sea games · team won 53% of 2190 · 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 1886 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 1:08–1:25

    By 0:55 in all: 3 mex · 3 wind

    The example game in this phase · 4 steps
    1. Mex ×3
    2. Wind ×2
    3. Wind ×3for Air
    4. Bot LabBot Labdone 1:17 · typical 1:12
  2. 2

    Bot Lab to Shipyard

    Economy
    • Metal Extractor1Mex
    • Wind Turbine1Wind
    Order
    1. ShipyardShipyard after 4 mex, 4 wind, 1 energy storagedone ~3:19, middle half 3:02–3:37
    Builders
    • Construction Bot3 Con bot
    • Graverobber2 Graverobber
    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 · 10 steps
    1. GraverobberGraverobber
    2. Construction BotCon bot
    3. Wind ×2
    4. GraverobberGraverobber
    5. Construction BotCon bot
    6. Energy storage
    7. GraverobberGraverobber
    8. Construction BotCon bot
    9. Mex
    10. ShipyardShipyarddone 3:29 · 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 (49%) · wind (48%) · Guard (47%) · destroyer (44%) · gunboat (39%)

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

    The example game in this phase · 10 steps
    1. Construction ShipCon ship
    2. Bot LabEat Bot Labreclaimed for its metal
    3. RiptideFrigatedone 3:52 · typical 4:40
    4. Mex ×2
    5. RiptideFrigate
    6. OppressorDestroyerdone 4:54 · typical 5:55
    7. Mex ×2
    8. Geothermal PowerplantGeodone 6:06 · typical 8:09
    9. Death CavalryDeath Cavalry
    10. Mex
  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 (31%)

    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 · 111 steps
    1. Dragon's TeethDragon's Teeth ×4
    2. HerringMissile corvette
    3. Dragon's TeethDragon's Teeth ×2
    4. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    5. Dragon's TeethDragon's Teeth
    6. RiptideFrigate
    7. Dragon's TeethDragon's Teeth ×7
    8. RiptideFrigate
    9. Dragon's TeethDragon's Teeth ×3
    10. OppressorDestroyer
    11. Radar TowerRadar Tower
    12. Dragon's TeethDragon's Teeth
    13. Con turret
    14. Dragon's TeethDragon's Teeth ×4
    15. ThistleThistle
    16. Dragon's TeethDragon's Teeth ×2
    17. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    18. Dragon's TeethDragon's Teeth ×4
    19. Twin GuardTwin Guard
    20. Death CavalryDeath Cavalry
    21. ThistleThistle
    22. Con turret
    23. HerringMissile corvette
    24. GuardGuard
    25. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    26. Wind
    27. RiptideFrigate
    28. Wind ×3
    29. Mex
    30. Advanced Metal ExtractorT2 mexdone 9:56
    31. Wind
    32. RiptideFrigate
    33. Twin GuardTwin Guard
    34. Wind
    35. Mex
    36. Wind
    37. Con turret ×2
    38. Radar TowerRadar Tower
    39. Death CavalryDeath Cavalry
    40. OppressorDestroyer
    41. Wind
    42. Converter
    43. Death CavalryDeath Cavalry
    44. HerringMissile corvette
    45. Wind
    46. HerringMissile corvette
    47. Advanced Metal ExtractorT2 mex
    48. HerringMissile corvette
    49. Wind
    50. HerringMissile corvette
    51. Wind
    52. Converter
    53. HerringMissile corvette
    54. Construction ShipCon ship
    55. HerringMissile corvette
    56. Advanced ShipyardAdvanced Shipyarddone 10:55
    57. HerringMissile corvette
    58. Advanced solar
    59. Wind
    60. Converter
    61. Wind
    62. Advanced solar
    63. PhantasmRadar jammer ship
    64. Wind
    65. Advanced solar
    66. Converter
    67. Advanced Metal ExtractorT2 mex
    68. MessengerCruise missile shipdone 12:04
    69. Mex
    70. Wind
    71. Advanced solar
    72. Converter
    73. Wind ×2
    74. MessengerCruise missile ship
    75. Wind
    76. Mex
    77. Converter
    78. Wind ×2
    79. Mex
    80. Wind ×3
    81. Converter
    82. Advanced Construction SubAdvanced Construction Sub
    83. Wind
    84. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    85. Aircraft PlantAircraft Plantdone 13:27
    86. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 13:59
    87. Advanced Metal ExtractorT2 mex
    88. FinchFinch
    89. Converter
    90. FinchFinch ×2
    91. Vehicle PlantVehicle Plantdone 13:47
    92. FinchFinch ×2
    93. Wind ×3
    94. Construction VehicleCon vehicle
    95. Wind
    96. Converter
    97. Construction VehicleCon vehicle
    98. Wind
    99. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    100. Construction VehicleCon vehicle
    101. Wind
    102. Construction VehicleCon vehicle
    103. Wind
    104. Construction VehicleCon vehicle
    105. Wind
    106. Construction VehicleCon vehicle
    107. Converter
    108. Wind ×2
    109. Advanced Metal ExtractorT2 mex
    110. Wind ×3
    111. FinchFinch

Counts are medians over the build's games: half of them build more, half fewer. The example game is Xsicer's (30 OS, 19/08/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:43 · in 73% of games

You get

  • Finch1 Finch from Airfirst at 1:52 · in 82% of games
  • Hercules1 Light transport from Airfirst at 1:59 · in 76% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 7:43 · 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

2190 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039800
2:0092900
3:00156000
4:002865051
5:00406714952
6:005416440232
7:006895908533
8:0085781541891
9:001042924401331
10:001255834911998
11:001510146512761
12:001806360283623
13:002127472174342
14:002480384685186
15:002867796936189
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

Xsicer

30.3 OS · 19/08/2026

Open source match ↗

4 received units · includes a constructor
518 metal received · 71836 energy received

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

Typical milestones

Bot Lab1:12Middle 50%: 1:08–1:25 · n=2163
Shipyard3:19Middle 50%: 3:02–3:37 · n=2181
Orca4:19Middle 50%: 3:53–5:00 · n=1479
Riptide4:40Middle 50%: 4:09–5:23 · n=2132
Oppressor5:55Middle 50%: 5:13–6:40 · n=2013
Geothermal Powerplant8:09Middle 50%: 7:11–9:24 · n=1459
Advanced Metal Extractor9:24Middle 50%: 8:46–10:22 · n=1911

Played most by

SHOGVN222games of this buildElpoloow136games of this buildsirniho125games of this buildOptimusprimenutt94games of this buildhihimik79games of this build