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Beach sea / Cortex / Economy first / OBSERVED BUILD

Standard beach sea

Cortex Beach sea build order · Supreme Isthmus

The role's usual play: com goes to sea to build a shipyard around 2 minutes, pumping frigates and destroyers to contest enemy sea entry or hold vision, with an advanced metal extractor around 10 minutes as the transition into the team's…

Usually shipyard first (94%)

#naval #eco · 813 distinct matches · 108 players · 84% of Cortex Beach sea games · team won 55% of 878 · Recently observed

HOW TO PLAY IT

Key timing: Shipyard by 1:57

  1. Open 3 mex and wind while com heads straight to sea.
  2. Drop Shipyard fast, before 2:00, to seize early sea presence.
  3. Push "frigate" out to contest enemy sea entry or hold vision.
  4. Add "destroyer" as the fleet grows.
  5. Transition into Advanced Metal Extractor to catch up on eco.

Phase by phase

TYPICAL OF ITS 813 GAMES
  1. 1
  2. 2
  3. 3
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 Shipyard

    Economy
    • Metal Extractor3Mex
    • Wind Turbine3Windfor allies
    • Wind Turbine2Wind
    • Energy Storage1Energy storage
    Order
    1. ShipyardShipyard after 3 mex, 2 wind, 1 energy storagedone ~1:57, middle half 1:44–2:08

    By 1:41 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 3 steps
    1. Mex ×3
    2. Tidal ×2
    3. ShipyardShipyarddone 1:26 · typical 1:57
  2. 2

    Shipyard to 5:00

    Economy
    • Metal Extractor5Mex
    • Tidal Generator2Tidal
    Builders
    • Construction Ship2 Con ship
    Army
    • Riptide2 Frigate
    • Herring1 Missile corvette
    • Oppressor1 Destroyer
    Other
    • Naval Radar / Sonar Tower1 Naval Radar / Sonar Tower

    Some games also: Urchin (43%) · wind (40%) · submarine (39%) · gunboat (36%) · con turret (35%)

    By 5:00 in all: 8 mex · 3 wind · 2 tidal · 1 energy storage

    The example game in this phase · 30 steps
    1. Windfor Air
    2. Construction ShipCon ship
    3. Wind ×3for Air
    4. Tidal
    5. Construction ShipCon ship
    6. Tidal ×2
    7. HerringMissile corvette
    8. SupporterGunboat ×2
    9. Mex
    10. SupporterGunboat
    11. Mex
    12. SupporterGunboat
    13. Mex
    14. GuardGuard
    15. SupporterGunboat
    16. Mex
    17. Wind
    18. HerringMissile corvette
    19. Wind
    20. OrcaSubmarinedone 4:01
    21. Mex
    22. Wind ×2
    23. OrcaSubmarine
    24. Wind
    25. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    26. Wind ×3
    27. OrcaSubmarine
    28. Wind
    29. Mex
    30. Wind
  3. 3

    5:00 to 10:00

    Economy
    • Metal Extractor1Mex
    • Wind Turbine10Wind
    Builders
    • Death Cavalry1 Death Cavalry
    • Construction Ship1 Con ship
    Army
    • Urchin1 Urchin
    • Riptide5 Frigate
    • Oppressor2 Destroyer
    • Herring2 Missile corvette
    Other
    • Naval Radar / Sonar Tower1 Naval Radar / Sonar Tower

    Some games also: Naval Construction Turret (48%) · Guard (47%) · Radar Tower (41%) · tidal (38%) · con turret (34%)

    By 10:00 in all: 9 mex · 12 wind · 4 wind · 4 tidal · 1 energy storage · 1 Naval Construction Turret

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

Counts are medians over the build's games: half of them build more, half fewer. The example game is Kelin's (41 OS, 28/08/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine3 Wind to Airfirst at 1:52 · in 78% of games

You get

  • Finch1 Finch from Airfirst at 1:58 · in 82% of games
  • Lazarus1 Lazarus from Geofirst at 2:13 · in 62% of games
  • Hephaestus1 Heavy transport from Airfirst at 2:16 · in 68% of games
  • Construction Bot1 Con bot from Geofirst at 2:27 · in 69% of games
  • Hercules1 Light transport from Airfirst at 2:34 · in 32% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 8:09 · in 88% 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

878 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156800
4:0025322150
5:003702197100
6:005032534253
7:0064761094589
8:00807318301025
9:00968328541608
10:001159239882343
11:001382052163080
12:001635261753814
13:001911472054610
14:002195382905714
15:002492492686556
WHAT THE NUMBERS SAY

Standard Beach sea wins more than Geo sea's 50% and gets its Shipyard up faster, using early sea access before falling behind on land resources.

  • + Shipyard finishes by 1:57, faster than Geo sea's 3:18
  • + 54% team win rate beats the Cortex geo sea baseline
  • − Metal produced trails Geo sea's Cortex build, 24356 vs 28451 by 15:00
  • − T2 factory only lands in 35% of games by 12:42
THE EXAMPLE YOU ARE READING

Kelin

41.5 OS · 28/08/2026

Open source match ↗

8 received units · includes a constructor
618 metal received · 117872 energy received

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

Typical milestones

Shipyard1:57Middle 50%: 1:44–2:08 · n=876
Riptide3:52Middle 50%: 3:16–4:34 · n=864
Oppressor5:11Middle 50%: 4:16–6:08 · n=849
Advanced Metal Extractor9:58Middle 50%: 9:16–10:53 · n=744

Played most by

EpicTyrannus85games of this buildDamsko67games of this buildWaboum64games of this buildPRO_HYDRA60games of this buildMrCoolPotato51games of this build