BAR / BUILD ATLAS
← All builds
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 · 1855 distinct matches · 193 players · 80% of Cortex Geo sea games · team won 53% of 2160 · 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 1855 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 ~1:13, middle half 1:08–1:25

    By 0:55 in all: 3 mex · 3 wind

    The example game in this phase · 3 steps
    1. Mex ×3
    2. Wind ×2for Air
    3. Bot LabBot Labdone 1:17 · typical 1:13
  2. 2

    Bot Lab to Shipyard

    Economy
    • Metal Extractor1Mex
    • Wind Turbine1Wind
    Order
    1. ShipyardShipyard after 4 mex, 5 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 · 7 steps
    1. Construction BotCon bot
    2. GraverobberGraverobber ×2
    3. Construction BotCon bot
    4. GraverobberGraverobber
    5. Construction BotCon bot
    6. GruntGrunt
    7. ShipyardShipyarddone 2:49 · 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 (48%) · 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. TrasherTrasher
    2. Mex
    3. RiptideFrigatenot finished by 15:00 · typical 4:40
    4. Construction ShipCon ship
    5. RiptideFrigate
    6. Mex
    7. GruntGrunt
    8. Mex
    9. RiptideFrigate
    10. Mex
    11. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    12. GruntGrunt ×2
    13. Mex
    14. GruntGrunt ×2
    15. OppressorDestroyerdone 5:51 · typical 5:55
    16. GruntGrunt
  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 53% 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 (39%) · 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 · 37 steps
    1. Bot LabEat Bot Labreclaimed for its metal
    2. JellyfishJellyfish
    3. HerringMissile corvette
    4. RiptideFrigate
    5. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    6. Solar
    7. Wind
    8. RiptideFrigate
    9. Solar
    10. Wind
    11. Death CavalryDeath Cavalry
    12. Wind ×2
    13. OppressorDestroyer
    14. Mex ×2
    15. Wind
    16. Advanced Metal ExtractorT2 mexdone 8:59 · typical 9:24
    17. HerringMissile corvette
    18. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    19. Wind
    20. RiptideFrigate
    21. Mex
    22. Wind
    23. RiptideFrigate
    24. Wind
    25. Advanced Metal ExtractorT2 mex
    26. Death CavalryDeath Cavalry
    27. Wind
    28. OppressorDestroyer
    29. Geothermal PowerplantGeonot finished by 15:00 · typical 8:09
    30. HerringMissile corvette
    31. Advanced Metal ExtractorT2 mex
    32. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    33. RiptideFrigate
    34. Advanced solar
    35. RiptideFrigate
    36. Con turret
    37. RiptideFrigate

Counts are medians over the build's games: half of them build more, half fewer. The example game is Guhhh's (31 OS, 15/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:43 · 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

2160 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039800
2:0092900
3:00155800
4:002864051
5:00406514652
6:005414440231
7:006891906535
8:0085761536891
9:001042424401335
10:001254934892005
11:001508946512771
12:001804960283641
13:002126072114358
14:002480384495207
15:002867596826201
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

Guhhh

30.8 OS · 15/10/2026

Open source match ↗

3 received units · includes a constructor
380 metal received · 9513 energy received

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

Typical milestones

Bot Lab1:13Middle 50%: 1:08–1:25 · n=2133
Shipyard3:19Middle 50%: 3:02–3:37 · n=2151
Orca4:18Middle 50%: 3:53–5:00 · n=1459
Riptide4:40Middle 50%: 4:09–5:23 · n=2101
Oppressor5:55Middle 50%: 5:12–6:40 · n=1982
Geothermal Powerplant8:09Middle 50%: 7:11–9:24 · n=1431
Advanced Metal Extractor9:24Middle 50%: 8:46–10:21 · n=1882

Played most by

SHOGVN222games of this buildsirniho125games of this buildElpoloow123games of this buildOptimusprimenutt94games of this buildhihimik78games of this build
Standard geo sea · Cortex Geo sea build order · BAR Build Atlas