BAR / BUILD ATLAS
← All builds
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 · 1285 distinct matches · 171 players · 55% of Cortex Geo sea games · team won 53% of 1433 · 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 1285 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 · 3 steps
    1. Mex ×3
    2. Wind ×6
    3. Bot LabBot Labdone 1:26 · 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 · 14 steps
    1. GraverobberGraverobber
    2. Windfor Air
    3. Construction BotCon bot
    4. Windfor Air
    5. Energy storage
    6. GraverobberGraverobber
    7. Construction BotCon bot ×2
    8. GruntGrunt
    9. Con turret
    10. GraverobberGraverobber
    11. Construction BotCon bot
    12. Mex
    13. Con turret
    14. ShipyardShipyarddone 4:11 · 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
    • Riptide1 Frigate
    • Orca1 Submarine
    • Herring1 Missile corvette
    Other
    • Radar Tower1 Radar Tower

    Some games also: wind (48%) · gunboat (44%) · destroyer (43%) · converter (40%) · con turret (30%)

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

    The example game in this phase · 6 steps
    1. Mex
    2. OrcaSubmarinedone 4:31 · typical 4:20
    3. Mex
    4. Construction ShipCon ship
    5. GruntGrunt
    6. Mex ×2
  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 (42%) · 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 · 144 steps
    1. Mex
    2. GuardGuard
    3. Bot LabEat Bot Labreclaimed for its metal
    4. Wind
    5. GuardGuard
    6. Mex
    7. Wind ×2
    8. RiptideFrigatedone 5:47 · typical 4:46
    9. GuardGuard
    10. Wind
    11. RiptideFrigate
    12. Converter
    13. GuardGuard
    14. RiptideFrigate
    15. Converter
    16. Naval Construction Turret
    17. RiptideFrigate
    18. Tidal
    19. GuardGuard
    20. Mex
    21. GuardGuard
    22. Tidal
    23. Converter
    24. Death CavalryDeath Cavalry
    25. Tidal
    26. Death CavalryDeath Cavalry
    27. Advanced Metal ExtractorT2 mexdone 8:10 · typical 9:24
    28. Tidal
    29. Converter
    30. Death CavalryDeath Cavalry
    31. OrcaSubmarine
    32. Converter
    33. OrcaSubmarine
    34. Converter
    35. Geothermal PowerplantGeodone 10:21 · typical 8:12
    36. OrcaSubmarine
    37. Converter
    38. UrchinUrchin
    39. Advanced Metal ExtractorT2 mex
    40. OrcaSubmarine
    41. Converter
    42. OrcaSubmarine ×3
    43. Vehicle PlantVehicle Plantdone 9:42
    44. Advanced Metal ExtractorT2 mex
    45. HerringMissile corvette ×3
    46. BruteBrute
    47. HerringMissile corvette
    48. BruteBrute
    49. HerringMissile corvette
    50. Mex
    51. BruteBrute
    52. HerringMissile corvette
    53. BruteBrute
    54. HerringMissile corvette
    55. Advanced Metal ExtractorT2 mex
    56. Radar TowerRadar Tower
    57. PounderPounder
    58. HerringMissile corvette
    59. BruteBrute
    60. HerringMissile corvette
    61. BruteBrute
    62. HerringMissile corvette
    63. BruteBrute
    64. HerringMissile corvette
    65. BruteBrute
    66. Wind
    67. HerringMissile corvette
    68. PounderPounder
    69. BruteBrute ×2
    70. Wind
    71. BruteBrute
    72. Converter
    73. Advanced Metal ExtractorT2 mex
    74. BruteBrute
    75. PounderPounder
    76. Wind
    77. BruteBrute ×3
    78. Converter
    79. BruteBrute
    80. Wind
    81. PounderPounder
    82. Construction ShipCon ship
    83. BruteBrute
    84. Advanced Metal ExtractorT2 mex
    85. Con turret
    86. Construction ShipCon ship
    87. Wind
    88. Con turret
    89. Converter
    90. BruteBrute
    91. Con turret
    92. BruteBrute
    93. Tidal
    94. Wind
    95. Tidal
    96. BruteBrute
    97. Con turret
    98. Naval Energy Storage
    99. Tidal
    100. PounderPounder
    101. Mex
    102. BruteBrute
    103. Tidal
    104. Converter
    105. BruteBrute
    106. Wind
    107. BruteBrute
    108. Advanced ShipyardAdvanced Shipyarddone 13:51
    109. BruteBrute
    110. Tidal
    111. PounderPounder
    112. Wind
    113. Mex
    114. Tidal
    115. BruteBrute
    116. Wind
    117. BruteBrute
    118. Tidal
    119. BruteBrute
    120. Advanced Geothermal PowerplantAdvanced Geothermal Powerplantnot finished by 15:00
    121. Tidal
    122. Mex
    123. BruteBrute
    124. PounderPounder
    125. Tidal
    126. Wind
    127. BruteBrute
    128. Tidal
    129. BruteBrute ×2
    130. Tidal
    131. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    132. BruteBrute
    133. Wind
    134. Con turret
    135. Aircraft PlantAircraft Plantdone 14:49
    136. Tidal
    137. PounderPounder
    138. Advanced Construction SubAdvanced Construction Sub
    139. ValiantValiant
    140. Wind
    141. Tidal
    142. FinchFinch
    143. Vehicle PlantEat Vehicle Plantreclaimed for its metal
    144. FinchFinch

Counts are medians over the build's games: half of them build more, half fewer. The example game is Sewer_Rat's (31 OS, 13/09/2026); 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 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

05k10k
0:005:0010:0015:00

metal

Own metal lost

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

metal

1433 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
6:005405464250
7:006877920545
8:0085571545901
9:001040124401333
10:001255235142031
11:001514246502784
12:001818460243686
13:002148872404451
14:002524985825354
15:002909799346381
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

Sewer_Rat

30.7 OS · 13/09/2026

Open source match ↗

5 received units · includes a constructor
35 metal received · 80476 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=1424
Shipyard3:19Middle 50%: 3:02–3:38 · n=1428
Orca4:20Middle 50%: 3:51–5:02 · n=930
Riptide4:46Middle 50%: 4:11–5:29 · n=1389
Oppressor5:58Middle 50%: 5:13–6:47 · n=1338
Geothermal Powerplant8:12Middle 50%: 7:12–9:24 · n=1363
Advanced Metal Extractor9:24Middle 50%: 8:48–10:22 · n=1262

Played most by

Elpoloow113games of this buildhihimik71games of this buildSHOGVN59games of this buildPRO_Rerory52games of this buildAlphacure50games of this build
Standard geo sea · Cortex Geo sea build order · BAR Build Atlas