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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 (93%)

#naval #eco · 1603 distinct matches · 207 players · 84% of Cortex Beach sea games · team won 55% of 1807 · Recently observed

HOW TO PLAY IT

Key timing: Shipyard by 1:56

  1. Open 3 mex, then send com to sea to build Shipyard by 1:56.
  2. Add tidal generators, wind and more mex to fund the shipyard.
  3. Pump Riptide first, then Oppressor to contest enemy sea entry.
  4. Get T2 constructor out to start scaling the naval economy.
  5. Transition into Advanced Metal Extractor as the economy phase begins.

Phase by phase

TYPICAL OF ITS 1603 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 ~1:56, middle half 1:43–2:07

    Some games also: Guard (30%)

    By 1:39 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 5 steps
    1. Mex ×3
    2. Wind ×6
    3. Energy storage
    4. GuardGuard
    5. ShipyardShipyarddone 2:09 · typical 1:56
  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 (46%) · mex (38%) · wind (37%) · submarine (36%) · wind (36%)

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

    The example game in this phase · 22 steps
    1. Construction ShipCon ship ×3
    2. OrcaSubmarinedone 3:11
    3. Wind
    4. Mex ×2
    5. Con turret
    6. Mex ×2
    7. RiptideFrigatedone 3:32 · typical 3:50
    8. UrchinUrchin
    9. RiptideFrigate
    10. Mex
    11. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    12. Wind
    13. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    14. Mex
    15. Wind ×2
    16. Mex
    17. HerringMissile corvette
    18. GuardGuard
    19. Wind
    20. OppressorDestroyerdone 5:59 · typical 5:15
    21. Wind
    22. ThistleThistle
  3. 3

    5:00 to 10:00

    Economy
    • Metal Extractor1Mex
    • Wind Turbine8Wind
    Builders
    • Construction Ship1 Con ship
    • Death Cavalry1 Death Cavalry
    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 (49%) · Guard (47%) · Radar Tower (40%) · tidal (39%) · wind (34%)

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

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

Counts are medians over the build's games: half of them build more, half fewer. The example game is NihilisticDuck73's (34 OS, 14/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine3 Wind to Airfirst at 1:45 · in 77% of games

You get

  • Finch1 Finch from Airfirst at 2:00 · in 80% of games
  • Lazarus1 Lazarus from Geofirst at 2:13 · in 63% of games
  • Hephaestus1 Heavy transport from Airfirst at 2:16 · in 65% of games
  • Construction Bot1 Con bot from Geofirst at 2:26 · in 70% of games
  • Hercules1 Light transport from Airfirst at 2:34 · in 32% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 8:08 · 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

1807 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00155300
4:002539051
5:003717175101
6:005049484279
7:006492975591
8:00807316651000
9:00967926141532
10:001153637242320
11:001368447423102
12:001625058323861
13:001895168794645
14:002168079335680
15:002458688866524
WHAT THE NUMBERS SAY

Standard Beach sea play has the lowest team win rate of these builds and destroys far less enemy metal early than it loses eco time.

  • + Metal produced climbs to 24945 by 15:00, the highest of all six roles.
  • + Riptide and Oppressor together make 63% of army, a focused naval composition.
  • − Enemy metal destroyed is only 200 by 5:00, barely contesting early sea.
  • − T2 factory only reached in 35% of games, behind other roles' T2 timing.
THE EXAMPLE YOU ARE READING

NihilisticDuck73

34.3 OS · 14/10/2026

Open source match ↗

6 received units · includes a constructor
437 metal received · 49632 energy received

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

Typical milestones

Shipyard1:56Middle 50%: 1:43–2:07 · n=1804
Riptide3:50Middle 50%: 3:12–4:34 · n=1761
Oppressor5:15Middle 50%: 4:29–6:07 · n=1740
Advanced Metal Extractor9:59Middle 50%: 9:17–10:54 · n=1528

Played most by

EpicTyrannus120games of this buildDamsko69games of this buildKbot_my_Ahole67games of this buildfanboi64games of this buildSHOGVN64games of this build