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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 · 1596 distinct matches · 207 players · 84% of Cortex Beach sea games · team won 55% of 1800 · 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 1596 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 1:24 · 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 · 16 steps
    1. HerringMissile corvette ×2
    2. Wind ×2for Air
    3. Construction ShipCon ship
    4. Tidal
    5. SupporterGunboat
    6. Mex
    7. Tidal
    8. Construction ShipCon ship
    9. Mex
    10. Tidal ×4
    11. Mex
    12. Tidal
    13. Mex
    14. Naval Construction Turret ×2
    15. Aircraft PlantAircraft Plantnot finished by 15:00
    16. 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%) · Radar Tower (40%) · tidal (40%) · 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 · 105 steps
    1. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    2. Construction ShipCon ship
    3. Aircraft PlantEat Aircraft Plantreclaimed for its metal
    4. RiptideFrigate ×4done 5:24 · typical 3:50
    5. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    6. UrchinUrchin
    7. RiptideFrigate
    8. Mex
    9. Naval Energy Converter
    10. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    11. Death CavalryDeath Cavalry
    12. Mex
    13. Naval Construction Turret
    14. Converter ×2for Geo
    15. Windfor Geo
    16. SentrySentry
    17. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    18. Wind ×5for Geo
    19. Naval Construction Turret
    20. Windfor Geo
    21. SentrySentry
    22. Windfor Geo
    23. Naval Construction Turret
    24. Windfor Geo
    25. Advanced ShipyardAdvanced Shipyarddone 9:12
    26. Wind ×2for Geo
    27. ShipyardEat Shipyardreclaimed for its metal
    28. Wind ×2for Geo
    29. NettleNettle
    30. Converter ×3for Geo
    31. NettleNettle
    32. Converterfor Geo
    33. Wind ×2for Geo
    34. Advanced Construction SubAdvanced Construction Sub
    35. Windfor Geo
    36. Wind
    37. Windfor Geo
    38. Advanced Metal ExtractorT2 mexdone 10:17 · typical 9:59
    39. Wind ×2for Geo
    40. Wind ×2
    41. Advanced Metal ExtractorT2 mex
    42. Wind
    43. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 11:02
    44. PathfinderPathfinder
    45. Wind
    46. Advanced Metal ExtractorT2 mex
    47. Wind
    48. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    49. Tidal
    50. Wind
    51. Tidal ×2
    52. Advanced Metal ExtractorT2 mex
    53. Tidal ×3
    54. Wind
    55. BuccaneerCruiserdone 12:09
    56. Tidal
    57. Windfor Geo
    58. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    59. Wind ×2for Geo
    60. Wind
    61. BuccaneerCruiser
    62. Windfor Geo
    63. Tidal
    64. Wind ×2for Geo
    65. Wind
    66. BuccaneerCruiser
    67. Tidal
    68. Wind ×3for Geo
    69. Wind
    70. BrimstoneAnti-swarm shipdone 13:03
    71. Windfor Geo
    72. Tidal
    73. Windfor Geo
    74. BrimstoneAnti-swarm ship
    75. Tidal
    76. Bot LabBot Labfor Geodone 13:23
    77. Wind
    78. Tidal
    79. DespotBattleshipdone 14:18
    80. Tidal ×2
    81. GruntGrunt
    82. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    83. GruntGrunt ×2
    84. Wind
    85. GruntGrunt ×2
    86. Tidal
    87. GruntGrunt ×2
    88. Wind
    89. GruntGrunt ×2
    90. Tidal
    91. GruntGrunt ×4
    92. Wind
    93. GruntGrunt
    94. Tidal
    95. GruntGrunt
    96. Tidal
    97. Arrow StormAnti-air shipdone 14:36
    98. GruntGrunt
    99. Tidal
    100. GruntGrunt ×2
    101. Tidal
    102. OasisOasis
    103. Wind
    104. GruntGruntfor Geo
    105. Tidal

Counts are medians over the build's games: half of them build more, half fewer. The example game is Seiffre's (31 OS, 10/08/2026); 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

1800 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
6:005049486280
7:006492974592
8:00807216611001
9:00967826121536
10:001153637182324
11:001368547433108
12:001624658263866
13:001894068774637
14:002167279205673
15:002456088526521
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

31.2 OS · 10/08/2026

Open source match ↗

4 received units · includes a constructor
471 metal received · 26033 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=1797
Riptide3:50Middle 50%: 3:12–4:34 · n=1754
Oppressor5:15Middle 50%: 4:29–6:07 · n=1733
Advanced Metal Extractor9:59Middle 50%: 9:17–10:54 · n=1522

Played most by

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