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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 · 5 steps
    1. Mex ×3
    2. Wind ×2
    3. Wind ×2for Air
    4. Wind
    5. 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 · 11 steps
    1. GraverobberGraverobber
    2. Construction BotCon bot
    3. Wind
    4. GraverobberGraverobber
    5. Construction BotCon bot
    6. Energy storage
    7. Construction BotCon bot ×2
    8. GruntGrunt
    9. Mex
    10. GruntGrunt ×2
    11. ShipyardShipyarddone 3:13 · 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 · 16 steps
    1. GruntGrunt ×4
    2. GuardGuard
    3. GruntGrunt
    4. Construction ShipCon ship
    5. Mex
    6. RiptideFrigatedone 4:19 · typical 4:40
    7. GuardGuard
    8. Mex
    9. Geothermal PowerplantGeodone 6:28 · typical 8:09
    10. Mex
    11. RiptideFrigate
    12. ThistleThistle
    13. Bot LabEat Bot Labreclaimed for its metal
    14. OppressorDestroyerdone 5:33 · typical 5:55
    15. Mex
    16. ThistleThistle
  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 · 50 steps
    1. Mex
    2. HerringMissile corvette
    3. Death CavalryDeath Cavalry
    4. Radar TowerRadar Tower
    5. Wind
    6. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    7. OppressorDestroyer
    8. Mex
    9. Wind
    10. Mex
    11. Radar TowerRadar Tower
    12. Wind
    13. GuardGuard
    14. HerringMissile corvette
    15. GuardGuard
    16. ThistleThistle
    17. HerringMissile corvette
    18. Wind
    19. Con turret
    20. HerringMissile corvette
    21. RiptideFrigate
    22. GuardGuard
    23. ThistleThistle
    24. Wind
    25. RiptideFrigate
    26. HerringMissile corvette
    27. Wind
    28. GuardGuard
    29. Converter
    30. Wind
    31. Con turret
    32. Wind
    33. GuardGuard
    34. Wind ×2
    35. Construction ShipCon ship
    36. Converter
    37. Advanced Metal ExtractorT2 mexdone 10:16 · typical 9:24
    38. Wind
    39. Con turret
    40. Wind ×6
    41. Converter
    42. Wind ×7
    43. Con turret
    44. Wind
    45. Con turret
    46. Wind
    47. Converter
    48. Wind
    49. Advanced Metal ExtractorT2 mex
    50. Wind ×2

Counts are medians over the build's games: half of them build more, half fewer. The example game is Xsicer's (30 OS, 09/08/2026); 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

30.4 OS · 09/08/2026

Open source match ↗

6 received units · includes a constructor
146 metal received · 19564 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
Standard geo sea · Cortex Geo sea build order · BAR Build Atlas