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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 · 1591 distinct matches · 207 players · 84% of Cortex Beach sea games · team won 55% of 1795 · 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 1591 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 · 3 steps
    1. Mex ×3
    2. Tidal ×2
    3. ShipyardShipyarddone 1:23 · 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 · 24 steps
    1. Windfor Air
    2. Construction ShipCon ship
    3. Wind ×2for Air
    4. Tidal ×2
    5. Construction ShipCon ship
    6. Tidal
    7. Mex
    8. RiptideFrigatedone 3:12 · typical 3:50
    9. Energy storage
    10. Mex
    11. Wind
    12. Mex
    13. Wind ×3
    14. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    15. Con turret
    16. OppressorDestroyerdone 4:21 · typical 5:14
    17. Converter ×2
    18. Mex
    19. HerringMissile corvette
    20. Wind
    21. RiptideFrigate
    22. GuardGuard
    23. Wind
    24. Mex
  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%) · tidal (39%) · Radar Tower (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 · 110 steps
    1. Converter
    2. RiptideFrigate
    3. Mex
    4. Wind
    5. Death CavalryDeath Cavalry
    6. Wind ×2
    7. Converter
    8. ThistleThistle
    9. Wind
    10. Construction ShipCon ship
    11. Wind
    12. Construction ShipCon ship
    13. Wind ×2
    14. UrchinUrchin
    15. RiptideFrigate
    16. Wind
    17. Converter
    18. Wind
    19. OppressorDestroyer
    20. Wind
    21. Converter
    22. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    23. Wind
    24. HerringMissile corvette
    25. Wind
    26. RiptideFrigate
    27. Mex
    28. Converter
    29. Wind
    30. RiptideFrigate
    31. Wind ×2
    32. Death CavalryDeath Cavalry
    33. Wind
    34. Converter
    35. Wind
    36. Construction ShipCon ship
    37. Wind ×2
    38. Radar TowerRadar Tower
    39. Construction ShipCon ship
    40. Wind
    41. RiptideFrigate
    42. Wind
    43. Advanced Metal ExtractorT2 mexdone 10:03 · typical 9:58
    44. OppressorDestroyer
    45. Wind
    46. Converter
    47. GuardGuard
    48. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    49. Wind
    50. Converter
    51. Wind
    52. HerringMissile corvette
    53. BeholderBeholder
    54. RiptideFrigate
    55. BeholderBeholder
    56. Wind
    57. Converter
    58. RiptideFrigate
    59. BeholderBeholder
    60. Death CavalryDeath Cavalry
    61. Wind
    62. Construction ShipCon ship
    63. Advanced Metal ExtractorT2 mex
    64. RiptideFrigate
    65. OppressorDestroyer
    66. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    67. Tidal
    68. HerringMissile corvette
    69. RiptideFrigate
    70. Tidal
    71. Advanced Metal ExtractorT2 mex
    72. HerringMissile corvette ×2
    73. RiptideFrigate
    74. Tidal
    75. Death CavalryDeath Cavalry
    76. Tidal
    77. Construction ShipCon ship
    78. RiptideFrigate
    79. Tidal
    80. OppressorDestroyer
    81. HerringMissile corvette
    82. RiptideFrigate ×2
    83. Mex
    84. Advanced Metal ExtractorT2 mex
    85. Death CavalryDeath Cavalry
    86. Construction ShipCon ship
    87. Advanced ShipyardAdvanced Shipyarddone 13:27
    88. Mex
    89. Naval Construction Turret
    90. Advanced Construction SubAdvanced Construction Sub
    91. Radar TowerRadar Tower
    92. Naval Construction Turret ×3
    93. UrchinUrchin
    94. Naval Construction Turret ×4
    95. UrchinUrchin
    96. Wind
    97. Naval Construction Turret
    98. Wind
    99. Naval Construction Turret
    100. Wind ×2
    101. Naval Fusion ReactorNaval Fusion Reactornot finished by 15:00
    102. UrchinUrchin
    103. Wind ×3
    104. UrchinUrchin
    105. Wind ×2
    106. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 14:59
    107. Wind ×2
    108. SlingshotSlingshot
    109. MessengerCruise missile shipnot finished by 15:00
    110. Wind ×2

Counts are medians over the build's games: half of them build more, half fewer. The example game is Erilium's (46 OS, 12/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine3 Wind to Airfirst at 1:46 · 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 64% 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

1795 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00155300
4:002540051
5:003717176101
6:005049487280
7:006492975592
8:00807016651001
9:00967926141532
10:001153637242325
11:001368547443105
12:001625058553871
13:001895168784629
14:002167379245680
15:002456588566501
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

Erilium

46.0 OS · 12/10/2026

Open source match ↗

7 received units · includes a constructor
550 metal received · 51682 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=1792
Riptide3:50Middle 50%: 3:12–4:34 · n=1749
Oppressor5:14Middle 50%: 4:29–6:06 · n=1728
Advanced Metal Extractor9:58Middle 50%: 9:17–10:54 · n=1519

Played most by

EpicTyrannus120games of this buildDamsko69games of this buildKbot_my_Ahole67games of this buildWaboum64games of this buildfanboi63games of this build