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Geo sea / Cortex / Economy first / OBSERVED BUILD

Standard geo sea

Cortex Geo sea build order · Supreme Isthmus

The role's default economy-first opening: bot lab then shipyard in the cove, early frigate and destroyer with a sub, taking geo on time before transitioning into a mixed navy for the rest of the game.

Usually shipyard in the cove (98%) · geo on time (83%)

#naval #eco · 1341 distinct matches · 174 players · 55% of Cortex Geo sea games · team won 54% of 1489 · 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 1341 GAMES · AGAINST STANDARD GEO SEA
  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 Turbine2Windfor allies+2 vs standard
    Order
    1. Bot LabBot Lab after 3 mex, 3 winddone ~1:12, middle half 1:08–1:21

    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 ×3
    5. Bot LabBot Labdone 1:31 · 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 ~3:20, middle half 3:02–3:39
    Builders
    • Graverobber3 Graverobber
    • Construction Bot3 Con bot
    Army
    • Grunt1 Grunt

    Some games also: con turret (48%) · trasher (40%) · energy storage (39%)

    By 2:54 in all: 4 mex · 4 wind · 1 energy storage

    The example game in this phase · 57 steps
    1. Construction BotCon bot ×2
    2. Con turretfor Geo sea
    3. GraverobberGraverobber ×2
    4. Mex
    5. Construction BotCon bot ×2
    6. Mex
    7. TrasherTrasher ×2
    8. ThistleThistle
    9. Mex
    10. GruntGrunt
    11. Radar TowerRadar Tower
    12. GruntGrunt
    13. GuardGuard
    14. ThistleThistle
    15. GuardGuard
    16. Construction BotCon bot
    17. GuardGuard
    18. Mex
    19. GuardGuard
    20. Mex
    21. GuardGuard ×2
    22. GraverobberGraverobber
    23. GuardGuard
    24. Geothermal PowerplantGeodone 6:33 · typical 8:09
    25. Radar TowerRadar Tower
    26. Twin GuardTwin Guard
    27. GuardGuard
    28. Metal storage
    29. GuardGuard
    30. Con turret
    31. Twin GuardTwin Guard
    32. GuardGuard
    33. JellyfishJellyfish
    34. Con turret
    35. Wind
    36. Radar TowerRadar Tower
    37. JellyfishJellyfish
    38. Wind
    39. JellyfishJellyfish
    40. Wind
    41. Con turret
    42. Wind
    43. Advanced Metal ExtractorT2 mexnot finished by 15:00 · typical 9:24
    44. Radar TowerRadar Tower
    45. Wind ×2
    46. Converter
    47. Pit BullPit Bull
    48. Bot LabEat Bot Labreclaimed for its metal
    49. Con turret
    50. Converter
    51. Con turret
    52. Advanced Metal ExtractorT2 mex
    53. Con turret ×3
    54. Converter
    55. Con turret
    56. JellyfishJellyfish
    57. ShipyardShipyarddone 9:54 · typical 3:20
  3. 3

    Shipyard to 5:00

    Economy
    • Metal Extractor4Mex
    Order
    1. Bot LabEat Bot Lab
    Builders
    • Construction Ship1 Con ship
    Army
    • Guard1 Guard
    • Riptide2 Frigate
    • Orca1 Submarine
    • Herring1 Missile corvette
    Other
    • Radar Tower1 Radar Tower

    Some games also: wind (48%) · gunboat (43%) · destroyer (43%) · converter (40%) · con turret (30%)

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

  4. 4

    5:00 to 10:00

    Economy
    • Metal Extractor2Mex
    • Wind Turbine6Wind−8 vs standard
    • Energy Converter3Converter+3 vs standard
    Order
    1. Geothermal PowerplantGeo after 9 mex, 9 wind, 2 converterin 77% of games
    Builders
    • Construction Turret1 Con turret
    • Death Cavalry2 Death Cavalry
    • Construction Ship1 Con ship
    Army
    • Guard2 Guard
    • Riptide5 Frigate
    • Herring2 Missile corvette

    Some games also: Thistle (42%) · submarine (30%)

    By 10:00 in all: 10 mex · 13 wind (standard 21) · 1 geo · 4 converter (standard 2) · 1 energy storage · 2 con turret

    The example game in this phase · 66 steps
    1. JellyfishJellyfish
    2. Converter
    3. Advanced Metal ExtractorT2 mex
    4. ShipyardShipyardnot finished by 15:00
    5. Wind ×2
    6. JellyfishJellyfish
    7. Converter
    8. Wind
    9. JellyfishJellyfish
    10. Advanced Metal ExtractorT2 mex
    11. Wind
    12. JellyfishJellyfish
    13. Wind
    14. JellyfishJellyfish
    15. OrcaSubmarinedone 11:06 · typical 4:20
    16. Converter
    17. Wind
    18. JellyfishJellyfish
    19. OrcaSubmarine
    20. Wind
    21. JellyfishJellyfish
    22. OrcaSubmarine
    23. Wind
    24. Converter
    25. JellyfishJellyfish
    26. Wind
    27. OrcaSubmarine
    28. Advanced Metal ExtractorT2 mex
    29. ShipyardShipyarddone 12:20
    30. Wind ×2
    31. Converter
    32. Wind
    33. OrcaSubmarine
    34. Wind
    35. Death CavalryDeath Cavalry
    36. Wind
    37. OrcaSubmarine
    38. Converter
    39. RiptideFrigatedone 12:52 · typical 4:46
    40. Wind
    41. OrcaSubmarine
    42. RiptideFrigate
    43. Wind ×2
    44. Advanced Geothermal PowerplantAdvanced Geothermal Powerplantdone 14:40
    45. Converter
    46. OrcaSubmarine
    47. Wind
    48. JellyfishJellyfish
    49. OrcaSubmarine
    50. Wind
    51. Converter ×2
    52. Con turret
    53. OrcaSubmarine
    54. Converter
    55. Con turret
    56. Converter
    57. OrcaSubmarine
    58. JellyfishJellyfish
    59. Converter
    60. OrcaSubmarine
    61. ShipyardShipyarddone 14:43
    62. Converter
    63. OrcaSubmarine
    64. RiptideFrigate
    65. Converter
    66. OrcaSubmarine

Counts are medians over the build's games: half of them build more, half fewer. The example game is BOBI's (31 OS, 24/09/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:41 · in 76% of games

You get

  • Finch1 Finch from Airfirst at 1:52 · in 82% of games
  • Hercules1 Light transport from Airfirst at 2:00 · in 77% 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

1489 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039800
2:0092900
3:00155400
4:002865050
5:00405815052
6:005404461250
7:006880923545
8:0085571533891
9:001040524341322
10:001256534802010
11:001518146132755
12:001822460243662
13:002161172774435
14:002534286015298
15:002916599436351
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

BOBI

31.2 OS · 24/09/2026

Open source match ↗

6 received units · includes a constructor
221 metal received · 17801 energy received

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

Typical milestones

Bot Lab1:12Middle 50%: 1:08–1:21 · n=1480
Shipyard3:20Middle 50%: 3:02–3:39 · n=1484
Orca4:20Middle 50%: 3:51–5:03 · n=965
Riptide4:46Middle 50%: 4:11–5:29 · n=1441
Oppressor5:58Middle 50%: 5:13–6:46 · n=1394
Geothermal Powerplant8:09Middle 50%: 7:11–9:24 · n=1417
Advanced Metal Extractor9:24Middle 50%: 8:48–10:22 · n=1311

Played most by

Elpoloow113games of this buildhihimik73games of this buildAlphacure61games of this buildSHOGVN59games of this buildPRO_Rerory52games of this build
Standard geo sea · Cortex Geo sea build order · BAR Build Atlas