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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 · 1589 distinct matches · 207 players · 84% of Cortex Beach sea games · team won 55% of 1793 · 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 1589 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 · 5 steps
    1. Mex ×3
    2. Wind ×4
    3. GuardGuard
    4. Wind
    5. ShipyardShipyarddone 1:51 · 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 · 23 steps
    1. Construction ShipCon ship ×2
    2. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    3. Mex
    4. Wind ×2
    5. RiptideFrigatedone 2:47 · typical 3:50
    6. Mex
    7. RiptideFrigate
    8. Wind
    9. HerringMissile corvette
    10. Tidal
    11. Mex
    12. Converter
    13. Wind
    14. Mex
    15. HerringMissile corvette
    16. Converter
    17. Wind ×2
    18. OppressorDestroyerdone 4:44 · typical 5:15
    19. ThistleThistle
    20. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    21. Wind ×2
    22. RiptideFrigate
    23. 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%) · 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 · 92 steps
    1. RiptideFrigate
    2. Mex
    3. Wind
    4. HerringMissile corvette
    5. Death CavalryDeath Cavalry
    6. Construction ShipCon ship
    7. Death CavalryDeath Cavalry
    8. HerringMissile corvette
    9. OppressorDestroyer
    10. Construction ShipCon ship ×3
    11. RiptideFrigate
    12. Construction ShipCon ship
    13. Advanced Metal ExtractorT2 mexdone 9:49 · typical 9:58
    14. RiptideFrigate
    15. Construction ShipCon ship
    16. HerringMissile corvette
    17. Death CavalryDeath Cavalry
    18. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    19. HerringMissile corvette
    20. OppressorDestroyer
    21. UrchinUrchin
    22. Wind
    23. OppressorDestroyer
    24. Wind
    25. Tidal ×2
    26. Wind
    27. OppressorDestroyer
    28. Tidal ×2
    29. Advanced Metal ExtractorT2 mex
    30. Wind
    31. Tidal ×2
    32. RiptideFrigate
    33. Tidal
    34. Mex
    35. Wind
    36. Construction ShipCon ship
    37. Mex
    38. RiptideFrigate
    39. Wind
    40. OppressorDestroyer
    41. Wind
    42. RiptideFrigate
    43. Advanced Metal ExtractorT2 mex
    44. Construction ShipCon ship
    45. Wind ×2
    46. Construction ShipCon ship
    47. Mex
    48. Wind
    49. Construction ShipCon ship
    50. Wind
    51. Naval Construction Turret
    52. Wind ×2
    53. Death CavalryDeath Cavalry
    54. Wind
    55. Naval Construction Turret
    56. Wind
    57. Tidal
    58. Naval Construction Turret
    59. Wind ×2
    60. Tidal
    61. Wind
    62. Advanced ShipyardAdvanced Shipyarddone 12:53
    63. Tidal
    64. Death CavalryDeath Cavalry
    65. Wind
    66. Tidal
    67. Wind ×2
    68. Tidal
    69. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    70. Wind
    71. Tidal
    72. Wind
    73. Tidal
    74. Wind ×2
    75. Tidal
    76. Death CavalryDeath Cavalry
    77. Mex
    78. Wind
    79. Naval Energy Converter
    80. ShipyardEat Shipyardreclaimed for its metal
    81. Naval Energy Converter
    82. Radar TowerRadar Tower
    83. Naval Energy Converter ×3
    84. Advanced Construction SubAdvanced Construction Sub
    85. Naval Energy Converter ×2
    86. Con turret
    87. Naval Energy Converter
    88. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    89. ThistleThistle
    90. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    91. Fusion ReactorFusionnot finished by 15:00
    92. Naval Energy Converter ×2

Counts are medians over the build's games: half of them build more, half fewer. The example game is EthanTheEpic's (30 OS, 24/08/2026); 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

1793 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00155300
4:002540051
5:003716176101
6:005045487280
7:006492972592
8:00807016651001
9:00967926141532
10:001153637242325
11:001368547443105
12:001625058553875
13:001895168784645
14:002167379245691
15:002456588566520
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

EthanTheEpic

30.1 OS · 24/08/2026

Open source match ↗

11 received units · includes a constructor
172 metal received · 22479 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=1790
Riptide3:50Middle 50%: 3:12–4:34 · n=1747
Oppressor5:15Middle 50%: 4:29–6:06 · n=1726
Advanced Metal Extractor9:58Middle 50%: 9:17–10:54 · n=1517

Played most by

EpicTyrannus120games of this buildDamsko69games of this buildKbot_my_Ahole67games of this buildWaboum64games of this buildPRO_HYDRA63games of this build