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Geo sea / Cortex / Economy first / OBSERVED BUILD

Standard geo sea

Cortex Geo sea build order · Supreme Isthmus

The usual Cove-side sea opening: bot lab for an early defensive bot, shipyard in the cove, then frigates, destroyers and submarines to contest the sea and defend the base.

Usually shipyard in the cove (98%)

#naval #defence · 1098 distinct matches · 104 players · 83% of Cortex Geo sea games · team won 52% of 1227 · Recently observed

HOW TO PLAY IT

Key timing: Shipyard by 3:16

  1. Grab 3 mex and open wind while laying down bot lab.
  2. Get bot lab up then push straight into shipyard.
  3. Finish shipyard, start pumping subs and frigates to contest sea.
  4. Add submarine, frigate and destroyer to hold sea lanes.
  5. Bring geo online and transition into mixed navy.

Phase by phase

TYPICAL OF ITS 1098 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
    Order
    1. Bot LabBot Lab after 3 mex, 3 winddone ~1:12, middle half 1:07–1:26

    Some games also: wind for allies (48%)

    By 0:55 in all: 3 mex · 3 wind

    The example game in this phase · 4 steps
    1. Mex ×3
    2. Wind ×2for Air
    3. Wind ×4
    4. Bot LabBot Labdone 1:27 · typical 1:12
  2. 2

    Bot Lab to Shipyard

    Economy
    • Metal Extractor1Mex
    • Wind Turbine2Wind
    Order
    1. ShipyardShipyard after 4 mex, 5 wind, 1 energy storagedone ~3:17, middle half 3:02–3:33
    Builders
    • Construction Bot3 Con bot
    • Graverobber2 Graverobber
    Army
    • Grunt1 Grunt

    Some games also: con turret (45%) · trasher (40%) · energy storage (33%) · wind for allies (31%)

    By 2:51 in all: 4 mex · 5 wind · 1 energy storage

    The example game in this phase · 6 steps
    1. GraverobberGraverobber ×2
    2. Wind
    3. TrasherTrasher
    4. Construction BotCon bot ×4
    5. Mex
    6. ShipyardShipyarddone 3:22 · typical 3:17
  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%) · Guard (49%) · wind (48%) · destroyer (45%) · gunboat (39%)

    By 5:00 in all: 8 mex · 6 wind · 1 energy storage · 1 con turret

    The example game in this phase · 13 steps
    1. Mex
    2. Construction ShipCon ship
    3. SupporterGunboat
    4. Mex
    5. RiptideFrigatedone 4:06 · typical 4:37
    6. Mex ×2
    7. Wind
    8. HerringMissile corvette
    9. OrcaSubmarinedone 4:44 · typical 4:17
    10. Construction ShipCon ship
    11. Bot LabEat Bot Labreclaimed for its metal
    12. Energy storage
    13. HerringMissile corvette
  4. 4

    5:00 to 10:00

    Economy
    • Metal Extractor2Mex
    • Wind Turbine8Wind
    • Energy Converter1Converter
    Builders
    • Construction Turret1 Con turret
    • Death Cavalry2 Death Cavalry
    • Construction Ship1 Con ship
    Army
    • Guard2 Guard
    • Riptide5 Frigate
    • Oppressor2 Destroyer
    Other
    • Naval Radar / Sonar Tower2 Naval Radar / Sonar Tower

    Some games also: geo (47%) · Thistle (40%) · submarine (34%)

    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 · 58 steps
    1. Mex
    2. RiptideFrigate
    3. Mex
    4. OppressorDestroyerdone 6:27 · typical 5:52
    5. Radar TowerRadar Tower
    6. ThistleThistle
    7. Mex
    8. ThistleThistle
    9. GuardGuard
    10. Geothermal PowerplantGeodone 7:45 · typical 8:00
    11. Construction ShipCon ship
    12. GuardGuard
    13. RiptideFrigate
    14. Advanced Metal ExtractorT2 mexdone 9:10 · typical 9:22
    15. RiptideFrigate
    16. GuardGuard
    17. OppressorDestroyer
    18. GuardGuard
    19. Wind ×3
    20. Advanced Metal ExtractorT2 mex
    21. Wind
    22. RiptideFrigate
    23. Wind
    24. UrchinUrchin
    25. Wind ×5
    26. JellyfishJellyfish
    27. Wind ×4
    28. Con turret
    29. Metal storage
    30. Advanced Metal ExtractorT2 mex
    31. Wind ×9
    32. Advanced Metal ExtractorT2 mex
    33. Con turret ×5
    34. Advanced Bot LabAdvanced Bot Labdone 13:34
    35. Con turret ×2
    36. JellyfishJellyfish
    37. Advanced Metal ExtractorT2 mex
    38. Wind ×3
    39. Advanced Construction BotT2 con bot
    40. EradicatorEradicator
    41. Wind
    42. CommandoCommando
    43. Wind
    44. PrudePrudenot finished by 15:00
    45. Wind
    46. Advanced Metal ExtractorT2 mexdone 14:15
    47. Wind ×2
    48. HerculesLight transport
    49. DuckDuck
    50. Wind ×2
    51. DuckDuck
    52. Wind ×2
    53. DuckDuck
    54. Wind
    55. DuckDuck
    56. Wind
    57. DuckDuck
    58. Wind ×2

Counts are medians over the build's games: half of them build more, half fewer. The example game is arcsiz's (35 OS, 08/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:48 · in 70% of games

You get

  • Finch1 Finch from Airfirst at 1:51 · in 83% of games
  • Hercules1 Light transport from Airfirst at 2:00 · in 74% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 7:44 · in 89% 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

1227 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039700
2:0092800
3:00156600
4:002894051
5:00410315052
6:005454461231
7:006936931545
8:0086071578891
9:001047124951344
10:001263036252031
11:001519548242838
12:001810762243720
13:002139973574441
14:002501686445353
15:002886197626354
WHAT THE NUMBERS SAY

Matches the role's own norm almost exactly, sitting at the typical 52% team win rate for Geo sea.

  • + Reliable timing: bot lab by 1:12 and shipyard by 3:16 in the middle half of games.
  • − Own metal lost climbs to 6854 by 15:00, showing sea fights stay costly.
THE EXAMPLE YOU ARE READING

arcsiz

35.3 OS · 08/10/2026

Open source match ↗

5 received units · includes a constructor
1003 metal received · 26945 energy received

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

Typical milestones

Bot Lab1:12Middle 50%: 1:07–1:26 · n=1207
Shipyard3:17Middle 50%: 3:02–3:33 · n=1219
Orca4:17Middle 50%: 3:51–4:59 · n=845
Riptide4:37Middle 50%: 4:08–5:21 · n=1192
Oppressor5:52Middle 50%: 5:08–6:36 · n=1114
Geothermal Powerplant8:00Middle 50%: 7:01–9:03 · n=729
Advanced Metal Extractor9:22Middle 50%: 8:45–10:10 · n=1060

Played most by

sirniho125games of this buildSHOGVN100games of this buildOptimusprimenutt86games of this buildPRO_Rerory52games of this buildTheSituation43games of this build