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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 (92%)

#naval #eco · 1708 distinct matches · 220 players · 84% of Cortex Beach sea games · team won 55% of 1917 · 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 1708 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 1:44–2:07

    Some games also: Guard (31%)

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

    The example game in this phase · 6 steps
    1. Mex ×3
    2. Wind ×2for Air
    3. Wind ×2
    4. Windfor Air
    5. Energy storage
    6. ShipyardShipyarddone 1:57 · 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 (37%) · wind (35%)

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

    The example game in this phase · 18 steps
    1. Construction ShipCon ship ×2
    2. HerringMissile corvette ×2
    3. Mex
    4. OrcaSubmarinedone 3:15
    5. Mex ×3
    6. Death CavalryDeath Cavalry
    7. Converter
    8. Mex
    9. UrchinUrchin
    10. Construction ShipCon ship
    11. RiptideFrigatedone 4:25 · typical 3:50
    12. Wind
    13. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    14. RiptideFrigate
    15. Wind
    16. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    17. Mex
    18. Tidal
  3. 3

    5:00 to 10:00

    Economy
    • Metal Extractor2Mex
    • 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 (40%) · wind (35%)

    By 10:00 in all: 9 mex · 10 wind · 4 wind · 3 tidal · 1 energy storage · 1 Naval Construction Turret

    The example game in this phase · 126 steps
    1. Mex
    2. Wind
    3. Con turret
    4. UrchinUrchin
    5. GuardGuard
    6. Wind
    7. RiptideFrigate
    8. GuardGuard
    9. UrchinUrchin
    10. Wind
    11. GuardGuard
    12. OppressorDestroyerdone 7:04 · typical 5:16
    13. GuardGuard
    14. Wind ×6
    15. GuardGuard
    16. Wind ×2
    17. UrchinUrchin
    18. GuardGuard
    19. Wind ×3
    20. Radar TowerRadar Tower
    21. Wind ×2
    22. Construction ShipCon ship
    23. Wind ×3
    24. Advanced Metal ExtractorT2 mexdone 8:08 · typical 9:59
    25. Wind
    26. Construction ShipCon shipfor Geo sea
    27. UrchinUrchin
    28. OppressorDestroyer
    29. Wind ×2
    30. UrchinUrchin
    31. Converter
    32. Wind
    33. Advanced Metal ExtractorT2 mex
    34. Converter ×3
    35. Wind
    36. Converter
    37. SlingshotSlingshot
    38. Converter
    39. Wind
    40. RiptideFrigate
    41. Wind
    42. Advanced Metal ExtractorT2 mex
    43. Converter
    44. RiptideFrigate
    45. Wind
    46. Converter
    47. RiptideFrigate
    48. Converter
    49. RiptideFrigate
    50. UrchinUrchin
    51. Converter
    52. HerringMissile corvette
    53. Wind
    54. HerringMissile corvette
    55. Wind
    56. OrcaSubmarine
    57. Wind ×2
    58. Naval Construction Turret
    59. Wind
    60. OrcaSubmarine
    61. Advanced Metal ExtractorT2 mex
    62. Wind ×2
    63. OrcaSubmarine
    64. Wind ×3
    65. OrcaSubmarine
    66. Wind ×2
    67. Tidal
    68. OrcaSubmarine
    69. ThistleThistle
    70. Wind
    71. Tidal
    72. Wind ×2
    73. Tidal
    74. Advanced Metal ExtractorT2 mex
    75. Wind
    76. Tidal
    77. Aircraft PlantAircraft Plantdone 12:34
    78. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    79. Advanced Metal ExtractorT2 mex
    80. RiptideFrigate
    81. UrchinUrchin
    82. RiptideFrigate ×2
    83. Naval Construction Turret
    84. RiptideFrigate
    85. Naval Construction Turret
    86. Hovercraft PlatformHovercraft Platformdone 13:39
    87. RiptideFrigate
    88. Construction AircraftCon aircraft
    89. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    90. Construction AircraftCon aircraft
    91. Death CavalryDeath Cavalry
    92. Construction AircraftCon aircraft
    93. Death CavalryDeath Cavalry
    94. Tidal
    95. Naval Construction Turret
    96. Construction AircraftCon aircraft
    97. Twin GuardTwin Guard
    98. GoonGoon
    99. Naval Construction Turret
    100. Death CavalryDeath Cavalry
    101. GoonGoon
    102. Construction AircraftCon aircraft
    103. Tidal
    104. GoonGoon ×3
    105. Death CavalryDeath Cavalry
    106. Tidal
    107. GoonGoon
    108. FinchFinch
    109. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    110. Advanced ShipyardAdvanced Shipyarddone 14:50
    111. Death CavalryDeath Cavalry
    112. GoonGoon
    113. FinchFinch
    114. Twin GuardTwin Guard
    115. GoonGoon
    116. Twin GuardTwin Guard
    117. Tidal
    118. GoonGoon ×2
    119. RiptideFrigate
    120. GoonGoon ×2
    121. UrchinUrchin
    122. GoonGoon ×2
    123. Twin GuardTwin Guard
    124. GoonGoon
    125. PathfinderPathfinder
    126. GoonGoon ×2

Counts are medians over the build's games: half of them build more, half fewer. The example game is enderOS1's (33 OS, 15/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine3 Wind to Airfirst at 1:44 · in 77% of games

You get

  • Finch1 Finch from Airfirst at 2:00 · in 79% of games
  • Lazarus1 Lazarus from Geofirst at 2:13 · in 62% of games
  • Hephaestus1 Heavy transport from Airfirst at 2:15 · in 64% of games
  • Construction Bot1 Con bot from Geofirst at 2:26 · in 70% of games
  • Hercules1 Light transport from Airfirst at 2:32 · 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

1917 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00155300
4:002540051
5:003717175101
6:005049482271
7:006495971588
8:0080841661999
9:00968626061521
10:001154537102279
11:001368546973049
12:001622157763831
13:001888868654565
14:002163779205612
15:002453588716491
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

enderOS1

32.8 OS · 15/10/2026

Open source match ↗

6 received units · includes a constructor
131 metal received · 86353 energy received

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

Typical milestones

Shipyard1:56Middle 50%: 1:44–2:07 · n=1914
Riptide3:50Middle 50%: 3:12–4:34 · n=1868
Oppressor5:16Middle 50%: 4:30–6:08 · n=1847
Advanced Metal Extractor9:59Middle 50%: 9:17–10:55 · n=1617

Played most by

EpicTyrannus122games of this buildDamsko69games of this buildfanboi67games of this buildKbot_my_Ahole67games of this buildSHOGVN66games of this build