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Geo sea / Cortex / Economy first / OBSERVED BUILD

Standard geo sea

Bot Lab then Shipyard by roughly 3:20 with a frigate and submarine out fast to contest the sea, transitioning into destroyers and later flagships/frigates for the rest of the game.

Usually no shipyard (100%)

#naval #eco · 5 distinct matches · 4 players · 100% of Cortex Geo sea games · team won 4 of 6 · Recently observed

HOW TO PLAY IT

Key timing: Shipyard by 3:20

  1. Take mex and wind, then build a Bot Lab by 1:06.
  2. Add a costal torpedo launcher before finishing the Shipyard.
  3. Complete the Shipyard to start pushing out ships.
  4. Push frigate and submarine out to contest the sea.
  5. Add destroyer to establish sea control, then scale toward T2.

Phase by phase

TYPICAL OF ITS 5 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 ~1:06, middle half 1:05–1:06

    By 0:49 in all: 3 mex · 3 wind

    The example game in this phase · 5 steps
    1. Mex ×2
    2. Wind
    3. Mex
    4. Wind ×2
    5. Bot LabBot Labdone 1:06 · typical 1:06
  2. 2

    Bot Lab to Shipyard

    Economy
    • Metal Extractor2Mex
    • Wind Turbine2Wind
    • Wind Turbine1Windfor allies
    • Energy Storage1Energy storage
    Order
    1. ShipyardShipyard after 5 mex, 5 wind, 1 con turretdone ~3:20, middle half 3:12–3:33
    Builders
    • Construction Turret1 Con turret
    • Construction Bot4 Con bot
    • Graverobber3 Graverobber
    Army
    • Trasher2 Trasher

    Some games also: grunt (50%)

    By 2:44 in all: 5 mex · 5 wind · 1 energy storage · 1 con turret

    The example game in this phase · 17 steps
    1. Wind
    2. GraverobberGraverobber
    3. Windfor Air
    4. GraverobberGraverobber
    5. Windfor Air
    6. Wind
    7. Construction BotCon bot
    8. GraverobberGraverobber
    9. Con turret
    10. Construction BotCon bot
    11. TrasherTrasher ×2
    12. Mex
    13. Construction BotCon bot ×2
    14. Mex
    15. Energy storage
    16. GruntGrunt ×2
    17. ShipyardShipyarddone 3:40 · typical 3:20
  3. 3

    Shipyard to 5:00

    Economy
    • Metal Extractor6Mex
    • Wind Turbine2Wind
    • Energy Converter3Converter
    Builders
    • Construction Ship1 Con ship
    Army
    • Thistle1 Thistle
    • Riptide2 Frigate
    • Orca1 Submarine
    Other
    • Radar Tower2 Radar Tower

    Some games also: missile corvette (50%) · Guard (33%) · Urchin (33%)

    By 5:00 in all: 10 mex · 8 wind · 4 converter · 1 energy storage · 1 con turret

    The example game in this phase · 24 steps
    1. GraverobberGraverobber
    2. Converter
    3. Mex
    4. Converter ×2
    5. Radar TowerRadar Tower
    6. Construction ShipCon ship
    7. Converter
    8. Mex
    9. OrcaSubmarinedone 4:12 · typical 4:26
    10. Wind
    11. Mex
    12. Converter
    13. RiptideFrigatedone 4:29 · typical 4:11
    14. Converter
    15. Radar TowerRadar Tower
    16. Wind
    17. Converter
    18. RiptideFrigate
    19. ThistleThistle
    20. Mex ×2
    21. Wind
    22. Radar TowerRadar Tower
    23. OppressorDestroyerdone 5:43 · typical 6:10
    24. ThistleThistle
  4. 4

    5:00 to 10:00

    Economy
    • Metal Extractor5Mex
    • Wind Turbine12Wind
    Builders
    • Construction Turret3 Con turret
    • Death Cavalry2 Death Cavalry
    • Construction Ship2 Con ship
    Army
    • Guard7 Guard
    • Thistle4 Thistle
    • Herring4 Missile corvette
    • Riptide3 Frigate
    Other
    • Naval Radar / Sonar Tower3 Naval Radar / Sonar Tower

    Some games also: submarine (33%) · Slingshot (33%)

    By 10:00 in all: 15 mex · 20 wind · 4 converter · 1 energy storage · 4 con turret

    The example game in this phase · 128 steps
    1. Mex
    2. Wind
    3. ThistleThistle
    4. Wind
    5. GuardGuard
    6. Mex
    7. GuardGuard
    8. Wind
    9. Death CavalryDeath Cavalry
    10. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    11. HerringMissile corvette
    12. GuardGuard
    13. Wind
    14. RiptideFrigate
    15. GuardGuard
    16. OppressorDestroyer
    17. Wind
    18. GuardGuard ×2
    19. Wind
    20. HerringMissile corvette
    21. RiptideFrigate
    22. Wind
    23. GuardGuard
    24. Death CavalryDeath Cavalry
    25. GuardGuard
    26. Wind
    27. RiptideFrigate
    28. GuardGuard
    29. Wind
    30. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    31. Con turret
    32. Mex
    33. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    34. OppressorDestroyer
    35. Wind
    36. Con turret
    37. Advanced Metal ExtractorT2 mexdone 9:08
    38. GuardGuard
    39. Mex
    40. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    41. ThistleThistle
    42. Mex
    43. Advanced Metal ExtractorT2 mex
    44. ThistleThistle
    45. Construction ShipCon ship
    46. Con turret
    47. Advanced ShipyardAdvanced Shipyarddone 10:48 · typical 11:48
    48. Wind
    49. Advanced Metal ExtractorT2 mex
    50. HerringMissile corvette
    51. Wind
    52. Naval Metal Storage
    53. Wind ×2
    54. Advanced Construction SubAdvanced Construction Sub
    55. Wind
    56. Mex
    57. Wind ×2
    58. Advanced Construction SubAdvanced Construction Sub
    59. Wind ×2
    60. Mex
    61. Wind
    62. Advanced Metal ExtractorT2 mex
    63. Wind
    64. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    65. Wind ×4
    66. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 12:06
    67. Wind ×2
    68. OasisOasis
    69. Wind ×2
    70. Naval Construction Turret
    71. Wind
    72. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    73. Naval Construction Turret
    74. Wind
    75. Naval Construction Turret
    76. Arrow StormAnti-air shipdone 12:40
    77. Wind ×2
    78. OrcaSubmarine
    79. Wind
    80. Black HydraBlack Hydranot finished by 15:00
    81. Advanced Metal ExtractorT2 mex
    82. Wind
    83. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    84. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    85. Wind ×2
    86. JellyfishJellyfish
    87. PathfinderPathfinder
    88. Wind
    89. PathfinderPathfinder
    90. Wind
    91. Advanced Sonar StationAdvanced Sonar Station
    92. Wind ×3
    93. Con turret
    94. JellyfishJellyfish
    95. Wind
    96. BrimstoneAnti-swarm shipdone 13:36
    97. Wind ×3
    98. Advanced Metal ExtractorT2 mex
    99. Black HydraBlack Hydra
    100. Wind ×3
    101. Naval Construction Turret
    102. Wind
    103. Naval Construction Turret
    104. Wind ×2
    105. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    106. Wind
    107. Advanced Sonar StationAdvanced Sonar Station
    108. Dragon's TeethDragon's Teeth
    109. Wind ×2
    110. Dragon's TeethDragon's Teeth
    111. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    112. Advanced Metal ExtractorT2 mex
    113. Dragon's TeethDragon's Teeth
    114. Wind
    115. Dragon's TeethDragon's Teeth ×2
    116. Wind
    117. Dragon's TeethDragon's Teeth ×2
    118. Wind ×2
    119. Dragon's TeethDragon's Teeth ×2
    120. Wind
    121. Dragon's TeethDragon's Teeth
    122. Con turret
    123. Dragon's TeethDragon's Teeth
    124. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    125. Wind
    126. Dragon's TeethDragon's Teeth
    127. Wind
    128. Dragon's TeethDragon's Teeth ×2

Counts are medians over the build's games: half of them build more, half fewer. The example game is sirniho's (37 OS, 18/09/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 2:15 · in 67% of games

You get

  • Hercules1 Light transport from Airfirst at 2:03 · in 83% of games
  • Finch1 Finch from Airfirst at 2:14 · in 83% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 7:28 · in 33% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 8:35 · in 33% 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

02k4k6k
0:005:0010:0015:00

metal

6 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039100
2:0092900
3:00174300
4:00306700
5:00441034851
6:006221816221
7:0082192088791
8:001035423931106
9:001253232321196
10:001518344012986
11:001852366413191
12:002044572134326
13:002206792664721
14:002206793314721
15:002206793814721
WHAT THE NUMBERS SAY

Standard Geo sea wins 67% of games and destroys far more metal than it loses by 15:00, showing strong sea dominance.

  • + Enemy metal destroyed reaches 9381 by 15:00 against 4721 lost.
  • − Own metal lost jumps from 51 at 5:00 to 2986 by 10:00, a rough mid-game spike.
THE EXAMPLE YOU ARE READING

sirniho

37.2 OS · 18/09/2026

Open source match ↗

4 received units · includes a constructor
171 metal received · 95464 energy received

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

Typical milestones

Bot Lab1:06Middle 50%: 1:05–1:06 · n=5
Shipyard3:20Middle 50%: 3:12–3:33 · n=6
Riptide4:11Middle 50%: 3:49–4:39 · n=6
Orca4:26Middle 50%: 4:12–4:26 · n=5
Oppressor6:10Middle 50%: 5:43–6:26 · n=5
Advanced Shipyard11:48Middle 50%: 11:18–12:04 · n=3

Played most by

sirniho3games of this build[APM]Zeeburg1game of this build[Grump]Grumpiness1game of this buildPRO_Fiddler1121game of this build

Supporting games

Pick a game to read and play it above.

[Grump]Grumpiness21/09/2026 · 49 OS↗sirniho18/09/2026 · 37 OS↗sirniho18/09/2026 · 37 OS↗sirniho18/09/2026 · 37 OS↗[APM]Zeeburg25/08/2026 · 43 OS↗PRO_Fiddler11225/08/2026 · 60 OS↗Supreme Isthmus v1.7
Beyond All Reason test-31320-e17e8b7
Naval balance tweaks off