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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 ×2
    2. Wind
    3. Mex
    4. Wind
    5. Bot LabBot Labdone 0:58 · 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 · 17 steps
    1. Windfor Air
    2. GraverobberGraverobber
    3. Wind ×2for Air
    4. GraverobberGraverobber
    5. Wind ×2
    6. Construction BotCon bot
    7. Wind
    8. GraverobberGraverobber
    9. Con turret
    10. Construction BotCon bot
    11. Mex
    12. Construction BotCon bot
    13. Energy storage
    14. TrasherTrasher
    15. JellyfishJellyfish
    16. Mex
    17. ShipyardShipyarddone 3:42 · 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 · 14 steps
    1. Converter ×2
    2. Bot LabEat Bot Labreclaimed for its metal
    3. Mex
    4. Converter
    5. Construction ShipCon ship
    6. Converter
    7. HerringMissile corvette
    8. Converter
    9. Mex
    10. OppressorDestroyerdone 4:30 · typical 5:55
    11. Converter
    12. Mex ×2
    13. RiptideFrigate ×2done 4:49 · typical 4:40
    14. 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 (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 · 86 steps
    1. RiptideFrigate
    2. Radar TowerRadar Tower
    3. GuardGuard ×2
    4. Death CavalryDeath Cavalry
    5. GuardGuard ×2
    6. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    7. GuardGuard ×2
    8. RiptideFrigate
    9. GuardGuard
    10. Geothermal PowerplantGeonot finished by 15:00 · typical 8:07
    11. GuardGuard
    12. RiptideFrigate
    13. GuardGuard
    14. Mex
    15. RiptideFrigate
    16. GuardGuard
    17. RiptideFrigate
    18. Metal storage
    19. Geothermal PowerplantGeo
    20. RiptideFrigate
    21. GuardGuard
    22. Metal storage ×2
    23. Advanced Metal ExtractorT2 mexdone 9:46 · typical 9:24
    24. Construction ShipCon ship ×3
    25. Naval Construction Turret
    26. Advanced Metal ExtractorT2 mex
    27. Construction ShipCon ship
    28. Naval Construction Turret ×2
    29. Construction ShipCon ship ×2
    30. Tidal
    31. Mex
    32. Advanced Metal ExtractorT2 mex
    33. OppressorDestroyer
    34. Naval Construction Turret
    35. Tidal ×3
    36. Construction ShipCon ship
    37. Advanced Metal ExtractorT2 mex
    38. Tidal
    39. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    40. Tidal
    41. OppressorDestroyer
    42. Tidal ×3
    43. RiptideFrigate
    44. Tidal ×3
    45. RiptideFrigate
    46. Tidal
    47. RiptideFrigate
    48. Tidal ×2
    49. Advanced ShipyardAdvanced Shipyarddone 13:06
    50. UrchinUrchin
    51. Advanced Metal ExtractorT2 mex
    52. RiptideFrigate
    53. Death CavalryDeath Cavalry
    54. Tidal
    55. Death CavalryDeath Cavalry
    56. Tidal
    57. Advanced Metal ExtractorT2 mex
    58. Death CavalryDeath Cavalry
    59. Tidal
    60. Naval Construction Turret
    61. Death CavalryDeath Cavalry ×2
    62. Advanced Construction SubAdvanced Construction Sub
    63. Death CavalryDeath Cavalry
    64. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    65. PathfinderPathfinder ×2
    66. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 14:03
    67. Mex
    68. PathfinderPathfinder ×2
    69. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    70. PhantasmRadar jammer ship
    71. DespotBattleshipnot finished by 15:00
    72. Advanced Geothermal PowerplantAdvanced Geothermal Powerplantdone 14:57
    73. Naval Construction Turret
    74. Dragon's MawDragon's Maw
    75. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    76. Tidal
    77. Naval Construction Turret
    78. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    79. Tidal
    80. Naval Construction Turret
    81. Tidal
    82. Naval Construction Turret
    83. Tidal
    84. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    85. Construction ShipCon ship
    86. Tidal

Counts are medians over the build's games: half of them build more, half fewer. The example game is Uncle_Cane's (37 OS, 15/10/2026); 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

Uncle_Cane

37.3 OS · 15/10/2026

Open source match ↗

6 received units · includes a constructor
2104 metal received · 48846 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