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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 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 · 977 distinct matches · 100 players · 83% of Cortex Geo sea games · team won 52% of 1096 · 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 977 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 1:06–1:26

    Some games also: wind for allies (49%)

    By 0:55 in all: 3 mex · 3 wind

    The example game in this phase · 3 steps
    1. Mex ×3
    2. Wind ×4
    3. Bot LabBot Labdone 1:10 · 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

    The example game in this phase · 10 steps
    1. GraverobberGraverobber ×2
    2. Wind
    3. GraverobberGraverobber
    4. Construction BotCon bot ×3
    5. Energy storage
    6. Mex
    7. GruntGrunt ×2
    8. TrasherTrasher ×2
    9. Mex ×2
    10. ShipyardShipyarddone 3:45 · 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 (40%)

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

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

Counts are medians over the build's games: half of them build more, half fewer. The example game is avaken's (42 OS, 06/08/2026); 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

1096 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039700
2:0092800
3:00156700
4:002900051
5:00410913152
6:005464441241
7:006946931551
8:0086111570903
9:001049024561351
10:001261036252061
11:001521848802898
12:001811663973757
13:002141473914448
14:002501386465363
15:002878197446294
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

avaken

41.5 OS · 06/08/2026

Open source match ↗

1 received units · includes a constructor
1138 metal received · 9109 energy received

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

Typical milestones

Bot Lab1:12Middle 50%: 1:06–1:26 · n=1085
Shipyard3:17Middle 50%: 3:02–3:33 · n=1090
Orca4:19Middle 50%: 3:54–5:00 · n=755
Riptide4:35Middle 50%: 4:08–5:21 · n=1064
Oppressor5:51Middle 50%: 5:08–6:35 · n=992
Geothermal Powerplant7:59Middle 50%: 7:01–9:00 · n=655
Advanced Metal Extractor9:22Middle 50%: 8:45–10:10 · n=940

Played most by

sirniho122games of this buildSHOGVN92games of this buildOptimusprimenutt84games of this buildPRO_Rerory47games of this buildhihimik41games of this build
Standard geo sea · Cortex Geo sea build order · BAR Build Atlas