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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 · 1967 distinct matches · 199 players · 80% of Cortex Geo sea games · team won 53% of 2279 · 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 1967 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. Wind
    3. Wind ×2for Air
    4. Wind
    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 · 9 steps
    1. Wind
    2. Construction BotCon bot ×2
    3. GraverobberGraverobber ×2
    4. Mex
    5. GraverobberGraverobber
    6. Construction BotCon bot
    7. Mex
    8. Con turret
    9. ShipyardShipyarddone 3:41 · 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 · 18 steps
    1. Mex
    2. Radar TowerRadar Tower
    3. GuardGuard
    4. Energy storage
    5. GuardGuard ×2
    6. SupporterGunboat
    7. Construction ShipCon ship
    8. HerringMissile corvette
    9. RiptideFrigatedone 4:19 · typical 4:40
    10. Mex
    11. Bot LabEat Bot Labreclaimed for its metal
    12. RiptideFrigate
    13. Mex
    14. Death CavalryDeath Cavalry
    15. BeholderBeholder
    16. OppressorDestroyerdone 5:19 · typical 5:55
    17. BeholderBeholder
    18. GuardGuard
  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 · 61 steps
    1. Geothermal PowerplantGeodone 6:36 · typical 8:07
    2. Mex
    3. RiptideFrigate
    4. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    5. HerringMissile corvette
    6. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    7. RiptideFrigate
    8. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    9. RiptideFrigate
    10. Death CavalryDeath Cavalry
    11. OppressorDestroyer
    12. RiptideFrigate
    13. UrchinUrchin
    14. HerringMissile corvette
    15. RiptideFrigate ×2
    16. Death CavalryDeath Cavalry
    17. Con turret
    18. Advanced Metal ExtractorT2 mexdone 9:54 · typical 9:24
    19. OppressorDestroyer
    20. Twin GuardTwin Guard
    21. ShipyardShipyarddone 9:35
    22. Construction ShipCon ship ×2
    23. Advanced Metal ExtractorT2 mex
    24. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    25. Construction ShipCon ship
    26. Radar TowerRadar Tower
    27. HerringMissile corvette
    28. Naval Construction Turret
    29. GuardGuard
    30. OppressorDestroyer
    31. GuardGuard
    32. RiptideFrigate
    33. GuardGuard
    34. RiptideFrigate ×2
    35. HerringMissile corvette
    36. Advanced Metal ExtractorT2 mex
    37. HerringMissile corvette ×3
    38. Death CavalryDeath Cavalry
    39. HerringMissile corvette
    40. OppressorDestroyer
    41. Naval Construction Turret
    42. Mex ×2
    43. RiptideFrigate ×2
    44. Twin GuardTwin Guard
    45. RiptideFrigate
    46. Death CavalryDeath Cavalry
    47. HerringMissile corvette
    48. OppressorDestroyer
    49. Twin GuardTwin Guard
    50. Advanced Metal ExtractorT2 mex
    51. RiptideFrigate ×3
    52. Death CavalryDeath Cavalry
    53. HerringMissile corvette
    54. OppressorDestroyer
    55. OrcaSubmarinedone 13:59 · typical 4:18
    56. RiptideFrigate ×3
    57. Advanced Metal ExtractorT2 mex
    58. Death CavalryDeath Cavalry
    59. Construction ShipCon ship
    60. HerringMissile corvette ×4
    61. Advanced ShipyardAdvanced Shipyardnot finished by 15:00

Counts are medians over the build's games: half of them build more, half fewer. The example game is DRM's (42 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 76% 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

2279 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039800
2:0092900
3:00156000
4:002865051
5:00406714652
6:005416440231
7:006893905526
8:0085771530891
9:001043024351321
10:001255434711984
11:001508846402761
12:001807160153621
13:002131572124345
14:002484384805186
15:002875597316200
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

DRM

42.2 OS · 15/10/2026

Open source match ↗

4 received units · includes a constructor
1053 metal received · 66269 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=2252
Shipyard3:19Middle 50%: 3:02–3:37 · n=2270
Orca4:18Middle 50%: 3:52–4:59 · n=1540
Riptide4:40Middle 50%: 4:09–5:21 · n=2219
Oppressor5:55Middle 50%: 5:13–6:43 · n=2098
Geothermal Powerplant8:07Middle 50%: 7:10–9:24 · n=1537
Advanced Metal Extractor9:24Middle 50%: 8:46–10:21 · n=1995

Played most by

SHOGVN227games of this buildElpoloow178games of this buildsirniho124games of this buildOptimusprimenutt92games of this buildhihimik79games of this build