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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 · 1270 distinct matches · 170 players · 55% of Cortex Geo sea games · team won 54% of 1413 · 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 1270 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. Solar
    3. Wind ×2for Air
    4. Bot LabBot Labdone 1:09 · 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 ~3:19, middle half 3:02–3:38
    Builders
    • Graverobber3 Graverobber
    • Construction Bot3 Con bot
    Army
    • Grunt1 Grunt

    Some games also: con turret (47%) · trasher (40%) · energy storage (38%)

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

    The example game in this phase · 6 steps
    1. Construction BotCon bot
    2. GraverobberGraverobber
    3. Construction BotCon bot
    4. Wind
    5. Tidal
    6. ShipyardShipyarddone 2:30 · typical 3:19
  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 (43%) · 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 · 15 steps
    1. GraverobberGraverobber
    2. Construction ShipCon ship
    3. Construction BotCon bot
    4. HerringMissile corvette
    5. Mex ×2
    6. SupporterGunboat ×5
    7. TrasherTrasher
    8. OrcaSubmarinedone 4:19 · typical 4:20
    9. Mex ×3
    10. TrasherTrasher
    11. Mex
    12. OrcaSubmarine
    13. UrchinUrchin
    14. Mex
    15. GruntGrunt
  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 78% 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 (41%) · submarine (31%) · 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 · 109 steps
    1. SupporterGunboat ×4
    2. BeholderBeholder
    3. SupporterGunboat ×2
    4. Mex
    5. SupporterGunboat ×2
    6. Radar TowerRadar Tower
    7. Tidal
    8. SupporterGunboat
    9. ThistleThistle
    10. OppressorDestroyerdone 7:05 · typical 5:58
    11. GuardGuard
    12. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    13. HerringMissile corvette
    14. GuardGuard
    15. OppressorDestroyer
    16. GuardGuard
    17. Tidal
    18. OppressorDestroyer
    19. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    20. GuardGuard
    21. Bot LabEat Bot Labreclaimed for its metal
    22. Con turret
    23. GuardGuard
    24. RiptideFrigatedone 9:12 · typical 4:46
    25. SupporterGunboat
    26. Advanced Metal ExtractorT2 mexdone 10:21 · typical 9:24
    27. GuardGuard
    28. SupporterGunboat ×4
    29. Wind ×5
    30. SupporterGunboat
    31. Wind
    32. Advanced Metal ExtractorT2 mex
    33. Wind ×4
    34. ThistleThistle
    35. Wind
    36. Bot LabBot Labdone 11:21
    37. Wind ×2
    38. SupporterGunboat
    39. Geothermal PowerplantGeodone 13:52 · typical 8:13
    40. Wind ×3
    41. Advanced Metal ExtractorT2 mex
    42. Construction ShipCon ship
    43. Death CavalryDeath Cavalry
    44. Wind ×2
    45. Construction BotCon bot
    46. Wind ×3
    47. Construction BotCon bot
    48. Construction ShipCon ship
    49. Construction BotCon bot
    50. Wind
    51. SupporterGunboat
    52. Construction BotCon bot
    53. SupporterGunboat
    54. Wind
    55. SupporterGunboat ×2
    56. Wind
    57. SupporterGunboat
    58. Wind
    59. SupporterGunboat
    60. Wind
    61. Advanced Metal ExtractorT2 mex
    62. Construction BotCon bot
    63. SupporterGunboat
    64. Wind
    65. SupporterGunboat
    66. Wind
    67. SupporterGunboat ×2
    68. Wind
    69. Construction BotCon bot
    70. SupporterGunboat
    71. Wind
    72. Naval Construction Turret
    73. SupporterGunboat
    74. Wind
    75. Construction BotCon bot
    76. Wind
    77. SupporterGunboat
    78. Wind ×2
    79. SupporterGunboat ×2
    80. Wind ×2
    81. SupporterGunboat ×2
    82. Wind ×2
    83. SupporterGunboat
    84. Wind
    85. SupporterGunboat ×2
    86. Wind
    87. Naval Construction Turret
    88. SupporterGunboat
    89. Wind ×3
    90. Advanced Metal ExtractorT2 mex
    91. Wind
    92. SupporterGunboat
    93. Wind
    94. SupporterGunboat ×2
    95. Wind
    96. SupporterGunboat
    97. Wind ×2
    98. SupporterGunboat
    99. RiptideFrigate
    100. Wind ×3
    101. HerringMissile corvette
    102. Wind
    103. HerringMissile corvette
    104. Wind ×2
    105. OppressorDestroyer
    106. Wind ×4
    107. Advanced Metal ExtractorT2 mex
    108. OppressorDestroyer
    109. Wind ×3

Counts are medians over the build's games: half of them build more, half fewer. The example game is Slow_but_sure's (31 OS, 21/09/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:41 · in 75% of games

You get

  • Finch1 Finch from Airfirst at 1:52 · in 83% 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

05k10k
0:005:0010:0015:00

metal

Own metal lost

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

metal

1413 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039800
2:0092900
3:00155300
4:002865050
5:00405815052
6:005404465250
7:006875920551
8:0085571551910
9:001039924551343
10:001255235432041
11:001514246792801
12:001819060503692
13:002150672774461
14:002526386485371
15:002910799476381
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

Slow_but_sure

30.9 OS · 21/09/2026

Open source match ↗

5 received units · includes a constructor
1009 metal received · 17931 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=1404
Shipyard3:19Middle 50%: 3:02–3:38 · n=1408
Orca4:20Middle 50%: 3:51–5:01 · n=918
Riptide4:46Middle 50%: 4:11–5:29 · n=1371
Oppressor5:58Middle 50%: 5:13–6:47 · n=1321
Geothermal Powerplant8:13Middle 50%: 7:13–9:26 · n=1346
Advanced Metal Extractor9:24Middle 50%: 8:48–10:21 · n=1244

Played most by

Elpoloow113games of this buildhihimik67games of this buildSHOGVN59games of this buildPRO_Rerory52games of this buildAlphacure50games of this build
Standard geo sea · Cortex Geo sea build order · BAR Build Atlas