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Geo sea / Cortex / Economy first / OBSERVED BUILD

Standard geo sea

The role's default economy-first play: bot lab then shipyard in the cove, quick frigate/submarine/destroyer navy to contest sea and hold the coast, transitioning into whatever the sea fight needs.

Usually shipyard in the cove (98%)

#naval #eco · 963 distinct matches · 100 players · 83% of Cortex Geo sea games · team won 51% of 1080 · Recently observed

HOW TO PLAY IT

Key timing: Shipyard by 3:18

  1. Open 3 mex, wind and solar, then Bot Lab.
  2. Get a BP and costal torpedo launcher up before the Shipyard.
  3. Put up Shipyard once you can defend it.
  4. Push out "submarine" and "frigate" to contest the sea.
  5. Add geothermal to fund the fleet transition into "destroyer", "missile corvette".

Phase by phase

TYPICAL OF ITS 963 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 1:06–1:25

    Some games also: wind for allies (49%)

    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. Bot LabBot Labdone 1:05 · 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 (46%) · trasher (39%) · energy storage (34%) · wind for allies (32%)

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

    The example game in this phase · 15 steps
    1. Wind
    2. GraverobberGraverobber
    3. Construction BotCon bot
    4. Wind
    5. Construction BotCon bot
    6. GraverobberGraverobber
    7. Construction BotCon bot
    8. Mex
    9. Construction BotCon bot
    10. GruntGrunt
    11. Energy storage
    12. GruntGrunt
    13. Mex
    14. Converter
    15. ShipyardShipyarddone 3:09 · typical 3:17
  3. 3

    Shipyard to 5:00

    Economy
    • Metal Extractor4Mex
    Builders
    • Construction Ship1 Con ship
    Army
    • Riptide2 Frigate
    • Orca1 Submarine
    Other
    • Radar Tower1 Radar Tower

    Some games also: Guard (49%) · wind (48%) · missile corvette (48%) · destroyer (46%) · gunboat (41%)

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

    The example game in this phase · 19 steps
    1. Mex
    2. Construction ShipCon ship
    3. Converter
    4. GuardGuard
    5. SupporterGunboat ×3
    6. Mex
    7. SupporterGunboat ×2
    8. Death CavalryDeath Cavalry
    9. GuardGuard
    10. Mex
    11. SupporterGunboat ×2
    12. Radar TowerRadar Tower
    13. SupporterGunboat ×2
    14. ThistleThistle
    15. SupporterGunboat
    16. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    17. SupporterGunboat ×5
    18. Con turret
    19. RiptideFrigate ×2done 4:57 · typical 4:36
  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 (48%) · Thistle (41%) · 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 · 69 steps
    1. RiptideFrigate
    2. OppressorDestroyernot finished by 15:00 · typical 5:52
    3. Mex
    4. OrcaSubmarinedone 5:46 · typical 4:20
    5. Radar TowerRadar Tower
    6. OppressorDestroyer
    7. ThistleThistle
    8. Geothermal PowerplantGeodone 9:21 · typical 7:58
    9. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    10. HerringMissile corvette
    11. RiptideFrigate
    12. Death CavalryDeath Cavalry
    13. SupporterGunboat ×2
    14. RiptideFrigate ×3
    15. OrcaSubmarine
    16. Wind ×2
    17. OppressorDestroyer
    18. Wind ×4
    19. SupporterGunboat ×3
    20. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    21. SupporterGunboat ×2
    22. HerringMissile corvette
    23. RiptideFrigate
    24. Death CavalryDeath Cavalry
    25. RiptideFrigate ×3
    26. OppressorDestroyer
    27. HerringMissile corvette
    28. Death CavalryDeath Cavalry
    29. Construction ShipCon ship
    30. Con turret
    31. Advanced ShipyardAdvanced Shipyarddone 13:02
    32. Con turret
    33. HerringMissile corvette
    34. Mex
    35. Con turret
    36. Converter
    37. HerringMissile corvette ×2
    38. Converter
    39. Mex
    40. Advanced Metal ExtractorT2 mexdone 12:20 · typical 9:22
    41. UrchinUrchin
    42. Converter ×2
    43. Mex ×2
    44. Converter
    45. Advanced Metal ExtractorT2 mex
    46. Mex
    47. Converter
    48. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    49. Advanced Metal ExtractorT2 mex
    50. Advanced Construction SubAdvanced Construction Sub
    51. ThistleThistle
    52. Naval Construction Turret
    53. PathfinderPathfinder
    54. Advanced Metal ExtractorT2 mex
    55. PathfinderPathfinder
    56. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 14:02
    57. PathfinderPathfinder
    58. ShipyardShipyarddone 14:13
    59. Fortification WallFortification Wall
    60. OasisOasis
    61. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    62. HerringMissile corvette
    63. Naval Construction Turret
    64. Advanced Metal ExtractorT2 mex
    65. HerringMissile corvette
    66. Advanced Sonar StationAdvanced Sonar Station
    67. Naval Construction Turret
    68. UrchinUrchin
    69. BuccaneerCruisernot finished by 15:00

Counts are medians over the build's games: half of them build more, half fewer. The example game is thermite's (36 OS, 26/09/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:48 · in 72% of games

You get

  • Finch1 Finch from Airfirst at 1:51 · in 83% of games
  • Hercules1 Light transport from Airfirst at 2:00 · in 75% 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

1080 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039700
2:0092800
3:00156700
4:002904051
5:00410713052
6:005463440242
7:006945931551
8:0086161570905
9:001049424631363
10:001261536342071
11:001522148872926
12:001812964053801
13:002147974014458
14:002507986465388
15:002882297766321
WHAT THE NUMBERS SAY

Standard Cortex geo sea sits at an even 50% win rate, trading a slower start for a big resource lead by 15:00.

  • + Metal produced hits 28451 by 15:00, well above both front roles
  • + Own metal lost stays far below enemy metal destroyed at every checkpoint
  • − Only 50% team win rate, the lowest of these six builds
  • − T2 factory only completes in 40% of games by 12:53
THE EXAMPLE YOU ARE READING

thermite

35.9 OS · 26/09/2026

Open source match ↗

5 received units · includes a constructor
121 metal received · 57451 energy received

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

Typical milestones

Bot Lab1:12Middle 50%: 1:06–1:25 · n=1069
Shipyard3:17Middle 50%: 3:02–3:33 · n=1074
Orca4:20Middle 50%: 3:54–5:00 · n=747
Riptide4:36Middle 50%: 4:08–5:21 · n=1048
Oppressor5:52Middle 50%: 5:09–6:34 · n=977
Geothermal Powerplant7:58Middle 50%: 7:00–8:59 · n=648
Advanced Metal Extractor9:22Middle 50%: 8:46–10:10 · n=926

Played most by

sirniho121games of this buildSHOGVN86games of this buildOptimusprimenutt84games of this buildPRO_Rerory47games of this buildhihimik41games of this build