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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%) · geo on time (83%)

#naval #eco · 1427 distinct matches · 177 players · 56% of Cortex Geo sea games · team won 54% of 1583 · 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 1427 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 · 4 steps
    1. Mex ×3
    2. Wind ×3
    3. Wind ×2for Air
    4. Bot LabBot Labdone 1:19 · 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 2:53 in all: 4 mex · 4 wind · 1 energy storage

    The example game in this phase · 14 steps
    1. Wind
    2. Construction BotCon bot
    3. GraverobberGraverobber
    4. Wind ×2
    5. Energy storage
    6. Construction BotCon bot
    7. GraverobberGraverobber
    8. Construction BotCon bot
    9. GuardGuard
    10. Construction BotCon bot
    11. GruntGrunt ×2
    12. Mex ×2
    13. GruntGrunt
    14. ShipyardShipyarddone 3:25 · 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 (44%) · destroyer (42%) · converter (40%) · con turret (31%)

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

    The example game in this phase · 14 steps
    1. TrasherTrasher
    2. Mex
    3. OrcaSubmarinedone 4:00 · typical 4:20
    4. ThistleThistle
    5. Radar TowerRadar Tower
    6. Mex
    7. Construction ShipCon ship
    8. ThistleThistle
    9. Geothermal PowerplantGeodone 7:15 · typical 8:08
    10. RiptideFrigatedone 4:53 · typical 4:46
    11. Mex
    12. Con turret
    13. Construction ShipCon ship
    14. Radar TowerRadar Tower
  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 (43%) · Urchin (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 · 84 steps
    1. Radar TowerRadar Tower
    2. GuardGuard
    3. Wind
    4. RiptideFrigate
    5. Mex
    6. Wind
    7. GuardGuard
    8. Wind
    9. OppressorDestroyerdone 6:59 · typical 5:59
    10. Wind
    11. Mex
    12. GuardGuard ×2
    13. Wind
    14. RiptideFrigate
    15. GuardGuard
    16. Wind
    17. GuardGuard
    18. Death CavalryDeath Cavalry
    19. Wind
    20. GuardGuard
    21. HerringMissile corvette
    22. Wind
    23. OrcaSubmarine
    24. Wind
    25. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    26. Wind
    27. Construction ShipCon ship
    28. Wind
    29. RiptideFrigate
    30. Wind
    31. RiptideFrigate
    32. Wind
    33. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    34. OppressorDestroyer
    35. Con turret
    36. Mex
    37. UrchinUrchin
    38. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    39. Wind
    40. RiptideFrigate
    41. Wind
    42. Death CavalryDeath Cavalry
    43. HerringMissile corvette
    44. Wind
    45. OrcaSubmarine
    46. Wind
    47. Construction ShipCon ship
    48. Advanced Metal ExtractorT2 mexdone 11:31 · typical 9:24
    49. Con turret
    50. Wind
    51. RiptideFrigate
    52. Wind
    53. RiptideFrigate
    54. Wind
    55. Advanced Metal ExtractorT2 mex
    56. OppressorDestroyer
    57. Wind
    58. Bot LabEat Bot Labreclaimed for its metal
    59. RiptideFrigate
    60. Advanced Metal ExtractorT2 mex
    61. Wind
    62. Death CavalryDeath Cavalry
    63. HerringMissile corvette
    64. OrcaSubmarine
    65. Wind
    66. Naval Construction Turret ×2
    67. Wind
    68. Naval Construction Turret
    69. Advanced ShipyardAdvanced Shipyarddone 14:07
    70. Advanced Metal ExtractorT2 mex
    71. Wind ×2
    72. ShipyardEat Shipyardreclaimed for its metal
    73. OasisOasis
    74. Converter
    75. Wind ×2
    76. Converter
    77. Advanced Construction SubAdvanced Construction Sub
    78. Converter
    79. Advanced Metal ExtractorT2 mex
    80. PathfinderPathfinder
    81. Converter
    82. Wind
    83. PathfinderPathfinder
    84. Converter

Counts are medians over the build's games: half of them build more, half fewer. The example game is Atra's (30 OS, 12/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:40 · in 77% of games

You get

  • Finch1 Finch from Airfirst at 1:51 · 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 7:42 · 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

05k10k15k
0:005:0010:0015:00

metal

Own metal lost

02.5k5k7.5k
0:005:0010:0015:00

metal

1583 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039800
2:0092900
3:00156000
4:002871051
5:00406315052
6:005410465250
7:006888923545
8:0085601533891
9:001042324301316
10:001257234632003
11:001518345702751
12:001825160003660
13:002163572774415
14:002538086615288
15:0029244100096373
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

Atra

30.4 OS · 12/10/2026

Open source match ↗

5 received units · includes a constructor
37 metal received · 85827 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=1574
Shipyard3:20Middle 50%: 3:02–3:39 · n=1578
Orca4:20Middle 50%: 3:51–5:01 · n=1029
Riptide4:46Middle 50%: 4:11–5:27 · n=1533
Oppressor5:59Middle 50%: 5:15–6:48 · n=1487
Geothermal Powerplant8:08Middle 50%: 7:10–9:24 · n=1508
Advanced Metal Extractor9:24Middle 50%: 8:47–10:22 · n=1398

Played most by

Elpoloow159games of this buildhihimik74games of this buildAlphacure69games of this buildSHOGVN61games of this buildPRO_Rerory52games of this build