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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 · 4 steps
    1. Mex ×3
    2. Wind ×3for Air
    3. Tidal
    4. ShipyardShipyarddone 1:37 · 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 · 27 steps
    1. Tidal
    2. Construction ShipCon ship
    3. HerringMissile corvette
    4. Tidal ×2
    5. HerringMissile corvette
    6. RiptideFrigatedone 2:39 · typical 3:50
    7. Mex
    8. Tidal
    9. RiptideFrigate
    10. Construction ShipCon ship
    11. Mex
    12. Mex
    13. Construction ShipCon ship
    14. Converter
    15. Mex
    16. RiptideFrigate
    17. Death CavalryDeath Cavalry
    18. Naval Construction Turret
    19. Mex
    20. Wind
    21. Mex ×2
    22. Tidal
    23. RiptideFrigate
    24. Wind
    25. OppressorDestroyerdone 5:50 · typical 5:14
    26. Tidal
    27. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
  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 · 108 steps
    1. Radar TowerRadar Tower
    2. ThistleThistle
    3. Wind
    4. Tidal
    5. ThistleThistle
    6. Tidal
    7. Wind
    8. GuardGuard
    9. Naval Energy Converter
    10. Death CavalryDeath Cavalry
    11. Wind
    12. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    13. GuardGuard
    14. Death CavalryDeath Cavalry
    15. Con turret
    16. Wind
    17. OppressorDestroyer
    18. Wind ×8
    19. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    20. Wind
    21. OppressorDestroyer
    22. Converter
    23. Wind ×2
    24. Converter
    25. Wind ×2
    26. Wind
    27. Wind
    28. RiptideFrigate
    29. Wind
    30. Wind
    31. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    32. Wind ×2
    33. RiptideFrigate
    34. Wind ×2
    35. RiptideFrigate
    36. Advanced Metal ExtractorT2 mexdone 10:20 · typical 9:58
    37. Wind
    38. RiptideFrigate ×2
    39. Wind
    40. Bot LabBot Labdone 10:00
    41. Wind
    42. RiptideFrigate
    43. GruntGrunt ×2
    44. Wind
    45. GruntGrunt
    46. Advanced Metal ExtractorT2 mex
    47. RiptideFrigate
    48. GruntGrunt
    49. Wind
    50. GruntGrunt ×3
    51. Death CavalryDeath Cavalry
    52. GruntGrunt ×4
    53. Death CavalryDeath Cavalry
    54. GruntGrunt
    55. Wind
    56. GruntGrunt ×2
    57. Death CavalryDeath Cavalry
    58. GruntGrunt ×2
    59. Wind
    60. GruntGrunt
    61. OppressorDestroyer
    62. RiptideFrigate
    63. Advanced Metal ExtractorT2 mex
    64. GruntGrunt
    65. Wind
    66. GruntGrunt ×2
    67. RiptideFrigate
    68. Wind
    69. GruntGrunt
    70. Wind
    71. Bot LabEat Bot Labreclaimed for its metal
    72. RiptideFrigate
    73. Wind
    74. RiptideFrigate
    75. Wind
    76. RiptideFrigate
    77. Wind ×2
    78. RiptideFrigate
    79. Wind
    80. RiptideFrigate
    81. Wind
    82. RiptideFrigate
    83. Wind
    84. Naval Construction Turret
    85. Wind
    86. RiptideFrigate
    87. Wind
    88. Advanced Metal ExtractorT2 mex
    89. Wind
    90. Naval Construction Turret
    91. RiptideFrigate
    92. Wind
    93. Naval Construction Turret
    94. Wind ×2
    95. RiptideFrigate
    96. Wind
    97. RiptideFrigate
    98. Wind ×2
    99. RiptideFrigate
    100. Wind
    101. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    102. RiptideFrigate
    103. Wind
    104. OppressorDestroyer
    105. Wind ×3
    106. OppressorDestroyer
    107. Wind ×2
    108. Advanced ShipyardAdvanced Shipyardnot finished by 15:00

Counts are medians over the build's games: half of them build more, half fewer. The example game is Seiffre's (32 OS, 21/08/2026); 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

Seiffre

32.5 OS · 21/08/2026

Open source match ↗

5 received units · includes a constructor
169 metal received · 9255 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