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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 · 6 steps
    1. Mex ×2
    2. Wind ×2for Air
    3. Wind ×2
    4. Energy storage
    5. Mex
    6. ShipyardShipyarddone 1:54 · 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 · 30 steps
    1. SupporterGunboat ×2
    2. Tidal
    3. Construction ShipCon ship
    4. Tidal ×3
    5. Construction ShipCon ship
    6. Wind ×3
    7. Mex
    8. Death CavalryDeath Cavalry
    9. Wind ×3
    10. Mex
    11. Mex
    12. Converter ×2
    13. Radar TowerRadar Tower
    14. RiptideFrigatedone 4:12 · typical 3:50
    15. Mex
    16. Converter ×2
    17. UrchinUrchin
    18. Converter
    19. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    20. HerringMissile corvette
    21. Converter
    22. Mex
    23. Wind
    24. OppressorDestroyerdone 5:42 · typical 5:15
    25. Naval Construction Turret
    26. Wind
    27. Wind
    28. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    29. Wind ×2
    30. Wind
  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 · 78 steps
    1. Wind ×3
    2. Wind
    3. Wind ×2
    4. UrchinUrchin
    5. Wind
    6. Wind
    7. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    8. HerringMissile corvette
    9. Wind ×2
    10. Wind
    11. Wind ×2
    12. RiptideFrigate
    13. Energy storage
    14. Wind
    15. UrchinUrchin
    16. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    17. Wind
    18. RiptideFrigate
    19. Wind
    20. Wind ×2
    21. Tidal
    22. Wind
    23. Wind
    24. Wind
    25. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    26. Tidal
    27. RiptideFrigate
    28. Tidal ×2
    29. OppressorDestroyer
    30. UrchinUrchin
    31. Con turret
    32. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    33. Tidal
    34. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    35. Tidal ×2
    36. RiptideFrigate
    37. Advanced Metal ExtractorT2 mexdone 9:53 · typical 9:59
    38. RiptideFrigate
    39. Tidal
    40. Wind
    41. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    42. Wind ×2
    43. Advanced Metal ExtractorT2 mex
    44. RiptideFrigate
    45. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    46. Converter
    47. RiptideFrigate
    48. Converter
    49. RiptideFrigate
    50. Advanced Metal ExtractorT2 mex
    51. Converter
    52. RiptideFrigate
    53. Naval Construction Turret
    54. Death CavalryDeath Cavalry
    55. Wind
    56. Tidal
    57. Wind
    58. Tidal
    59. Wind
    60. Tidal
    61. OppressorDestroyer
    62. Wind
    63. Tidal
    64. Wind
    65. Tidal ×2
    66. Advanced Metal ExtractorT2 mex
    67. Con turret
    68. OppressorDestroyer
    69. Mex
    70. Con turret
    71. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    72. Naval Construction Turret
    73. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    74. Advanced ShipyardAdvanced Shipyarddone 13:37
    75. BrimstoneAnti-swarm shipdone 13:49
    76. Fusion ReactorFusionnot finished by 15:00
    77. BrimstoneAnti-swarm ship ×2
    78. BeamerBeamer

Counts are medians over the build's games: half of them build more, half fewer. The example game is optimusprime3000's (32 OS, 29/09/2026); 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

optimusprime3000

31.6 OS · 29/09/2026

Open source match ↗

5 received units · includes a constructor
448 metal received · 35226 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