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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 · 4 steps
    1. Mex ×3
    2. Windfor Air
    3. Wind ×2
    4. Bot LabBot Labdone 1:03 · 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 · 8 steps
    1. Wind
    2. GraverobberGraverobber
    3. Wind
    4. Construction BotCon bot
    5. Energy storage
    6. Construction BotCon bot
    7. GraverobberGraverobber
    8. ShipyardShipyarddone 2:43 · 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 · 23 steps
    1. Mex
    2. GruntGrunt ×2
    3. HerringMissile corvette
    4. Construction BotCon bot
    5. SupporterGunboat
    6. Construction ShipCon ship
    7. SupporterGunboat ×2
    8. Mex
    9. SupporterGunboat ×3
    10. OrcaSubmarinedone 3:57 · typical 4:17
    11. Mex
    12. Radar TowerRadar Tower
    13. Death CavalryDeath Cavalry
    14. Bot LabEat Bot Labreclaimed for its metal
    15. GuardGuard
    16. Construction ShipCon ship
    17. Converter
    18. GuardGuard
    19. HerringMissile corvette
    20. Mex
    21. SupporterGunboat
    22. ThistleThistle
    23. 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 · 59 steps
    1. RiptideFrigatedone 5:26 · typical 4:40
    2. Mex
    3. Wind
    4. GuardGuard
    5. Wind
    6. RiptideFrigate
    7. OppressorDestroyerdone 6:11 · typical 5:55
    8. Wind ×2
    9. RiptideFrigate
    10. Wind
    11. RiptideFrigate
    12. Wind
    13. OppressorDestroyer
    14. Mex
    15. Wind
    16. GuardGuard
    17. Wind ×2
    18. Twin GuardTwin Guard
    19. HerringMissile corvette
    20. RiptideFrigate
    21. Mex
    22. Advanced Metal ExtractorT2 mexdone 10:00 · typical 9:24
    23. Wind
    24. RiptideFrigate
    25. OppressorDestroyer
    26. Mex
    27. Death CavalryDeath Cavalry
    28. Mex
    29. UrchinUrchin
    30. Construction ShipCon ship ×2
    31. HerringMissile corvette
    32. RiptideFrigate ×4
    33. OppressorDestroyer ×3
    34. RiptideFrigate
    35. Construction ShipCon ship ×3
    36. Advanced Metal ExtractorT2 mex
    37. Construction ShipCon ship
    38. Naval Construction Turret
    39. Metal storage
    40. OppressorDestroyer
    41. Death CavalryDeath Cavalry
    42. Naval Construction Turret
    43. Tidal
    44. Advanced Metal ExtractorT2 mex
    45. GuardGuard
    46. Tidal
    47. Wind
    48. Tidal
    49. Wind
    50. HerringMissile corvette
    51. Wind
    52. Tidal ×2
    53. Wind ×2
    54. Tidal
    55. Mex
    56. Wind
    57. Tidal
    58. RiptideFrigate
    59. Wind

Counts are medians over the build's games: half of them build more, half fewer. The example game is TheSituation's (53 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

TheSituation

52.7 OS · 15/10/2026

Open source match ↗

10 received units · includes a constructor
745 metal received · 22571 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