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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 · 5 steps
    1. Mex ×2
    2. Wind
    3. Mex
    4. Wind ×3
    5. 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, 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 · 13 steps
    1. Windfor Air
    2. GraverobberGraverobber
    3. Construction BotCon bot
    4. Windfor Air
    5. Solar
    6. Construction BotCon bot ×2
    7. Mex
    8. GraverobberGraverobber
    9. Wind
    10. GraverobberGraverobber
    11. GruntGrunt ×2
    12. Construction BotCon bot
    13. ShipyardShipyarddone 3:06 · 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 · 21 steps
    1. Mex
    2. HerringMissile corvette
    3. SupporterGunboat
    4. Construction ShipCon ship
    5. SupporterGunboat
    6. Mex
    7. SupporterGunboat
    8. Mex
    9. SupporterGunboat ×4
    10. Radar TowerRadar Tower
    11. SupporterGunboat ×2
    12. Mex
    13. SupporterGunboat
    14. Construction ShipCon ship
    15. OrcaSubmarinedone 4:53 · typical 4:19
    16. GuardGuard
    17. Energy storage
    18. Mex
    19. Converter
    20. OrcaSubmarine
    21. GuardGuard
  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 · 175 steps
    1. Converter
    2. RiptideFrigatenot finished by 15:00 · typical 4:35
    3. SupporterGunboat
    4. OppressorDestroyerdone 6:00 · typical 5:51
    5. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    6. GuardGuard
    7. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    8. Mex
    9. HerringMissile corvette
    10. Con turret
    11. OppressorDestroyer
    12. Mex
    13. Con turret
    14. Wind
    15. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    16. Wind
    17. Con turret
    18. Mex
    19. Construction ShipCon ship
    20. Con turret
    21. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    22. Geothermal PowerplantGeodone 8:16 · typical 7:59
    23. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    24. Wind ×2
    25. Tidal
    26. Wind ×2
    27. Tidal
    28. Wind
    29. Tidal
    30. Converter
    31. Advanced Metal ExtractorT2 mexdone 9:28 · typical 9:22
    32. Tidal
    33. Converter
    34. Wind
    35. Tidal
    36. Wind
    37. Converter
    38. Tidal
    39. Wind
    40. Mex
    41. Wind
    42. Converter
    43. Advanced ShipyardAdvanced Shipyarddone 9:50
    44. Wind
    45. Converter
    46. Mex
    47. Con turret
    48. Converter
    49. Wind
    50. Radar TowerRadar Tower
    51. Dragon's TeethDragon's Teeth
    52. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    53. Dragon's TeethDragon's Teeth ×3
    54. GuardGuard
    55. Dragon's TeethDragon's Teeth
    56. Advanced Metal ExtractorT2 mex
    57. Dragon's TeethDragon's Teeth
    58. Wind
    59. Dragon's TeethDragon's Teeth ×3
    60. Wind
    61. GuardGuard
    62. Dragon's TeethDragon's Teeth
    63. Wind
    64. Dragon's TeethDragon's Teeth
    65. Tidal
    66. Advanced Construction SubAdvanced Construction Sub
    67. Dragon's TeethDragon's Teeth
    68. Wind
    69. ThistleThistle
    70. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    71. Dragon's TeethDragon's Teeth
    72. GuardGuard
    73. Dragon's TeethDragon's Teeth
    74. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    75. Wind
    76. Dragon's TeethDragon's Teeth
    77. Tidal
    78. Dragon's TeethDragon's Teeth
    79. GuardGuard
    80. Wind
    81. Dragon's TeethDragon's Teeth
    82. Converter
    83. Dragon's TeethDragon's Teeth
    84. Energy storage
    85. Dragon's TeethDragon's Teeth
    86. Converter
    87. GuardGuard
    88. Dragon's TeethDragon's Teeth
    89. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    90. Dragon's TeethDragon's Teeth
    91. Converter
    92. Dragon's TeethDragon's Teeth
    93. Wind
    94. GuardGuard
    95. Dragon's TeethDragon's Teeth
    96. Converter
    97. Advanced Metal ExtractorT2 mex
    98. Wind
    99. Dragon's TeethDragon's Teeth
    100. PathfinderPathfinder
    101. Dragon's TeethDragon's Teeth
    102. Wind
    103. Converter
    104. Dragon's TeethDragon's Teeth
    105. Wind
    106. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 11:18
    107. PathfinderPathfinder
    108. Dragon's TeethDragon's Teeth
    109. Converter
    110. Wind
    111. Dragon's TeethDragon's Teeth
    112. ThistleThistle
    113. BrimstoneAnti-swarm shipdone 11:32
    114. Dragon's TeethDragon's Teeth
    115. Converter
    116. Dragon's TeethDragon's Teeth
    117. Wind
    118. Dragon's TeethDragon's Teeth
    119. Converter
    120. Dragon's TeethDragon's Teeth ×2
    121. Converter
    122. Dragon's TeethDragon's Teeth
    123. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    124. Dragon's TeethDragon's Teeth
    125. Wind
    126. Converter
    127. Dragon's TeethDragon's Teeth
    128. BrimstoneAnti-swarm ship
    129. Dragon's TeethDragon's Teeth
    130. Wind
    131. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    132. Dragon's TeethDragon's Teeth
    133. Converter
    134. Dragon's TeethDragon's Teeth
    135. Converter
    136. Aircraft PlantAircraft Plantdone 12:10
    137. Converter
    138. BrimstoneAnti-swarm ship
    139. GuardGuard
    140. Converter
    141. BrimstoneAnti-swarm ship
    142. Advanced Metal ExtractorT2 mex
    143. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    144. Wind
    145. Converter
    146. BrimstoneAnti-swarm ship
    147. Wind ×2
    148. PhantasmRadar jammer ship
    149. Wind
    150. MessengerCruise missile shipdone 13:30
    151. Wind
    152. Construction AircraftCon aircraft
    153. Wind
    154. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    155. MessengerCruise missile ship
    156. Construction AircraftCon aircraft
    157. Wind
    158. Construction AircraftCon aircraft
    159. PlatypusPlatypus
    160. Wind
    161. Construction AircraftCon aircraft
    162. MessengerCruise missile ship
    163. Wind
    164. Construction AircraftCon aircraft
    165. Advanced Metal ExtractorT2 mex
    166. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    167. PlatypusPlatypus
    168. Wind
    169. ValiantValiant
    170. MessengerCruise missile ship
    171. ValiantValiant ×2
    172. Wind
    173. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    174. ValiantValiant
    175. PlatypusPlatypus

Counts are medians over the build's games: half of them build more, half fewer. The example game is Kelin's (42 OS, 28/08/2026); 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

Kelin

41.9 OS · 28/08/2026

Open source match ↗

51 received units · includes a constructor
1101 metal received · 29442 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