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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 (94%)

#naval #eco · 815 distinct matches · 109 players · 84% of Cortex Beach sea games · team won 55% of 881 · Recently observed

HOW TO PLAY IT

Key timing: Shipyard by 1:57

  1. Open 3 mex and wind while com heads straight to sea.
  2. Drop Shipyard fast, before 2:00, to seize early sea presence.
  3. Push "frigate" out to contest enemy sea entry or hold vision.
  4. Add "destroyer" as the fleet grows.
  5. Transition into Advanced Metal Extractor to catch up on eco.

Phase by phase

TYPICAL OF ITS 815 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 ~1:57, middle half 1:44–2:08

    By 1:40 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 4 steps
    1. Mex ×3
    2. Wind ×2
    3. GuardGuard
    4. ShipyardShipyarddone 1:33 · typical 1:57
  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 (43%) · wind (40%) · submarine (39%) · gunboat (36%) · con turret (35%)

    By 5:00 in all: 8 mex · 3 wind · 2 tidal · 1 energy storage

    The example game in this phase · 28 steps
    1. Tidal
    2. Construction ShipCon ship
    3. Tidal ×2
    4. Construction ShipCon ship
    5. Mex
    6. HerringMissile corvette
    7. Naval Construction Turret
    8. Mex
    9. SlingshotSlingshot
    10. RiptideFrigate ×2done 3:13 · typical 3:52
    11. Tidal
    12. Naval Energy Converter
    13. Mex
    14. Naval Energy Converter
    15. Mex
    16. HerringMissile corvette
    17. Tidal
    18. Naval Energy Converter ×2
    19. Tidal
    20. Death CavalryDeath Cavalry
    21. Converter
    22. Tidal ×2
    23. UrchinUrchin
    24. Tidal
    25. OppressorDestroyerdone 6:14 · typical 5:11
    26. Naval Energy Converter ×2
    27. Wind
    28. UrchinUrchin
  3. 3

    5:00 to 10:00

    Economy
    • Metal Extractor1Mex
    • Wind Turbine10Wind
    Builders
    • Death Cavalry1 Death Cavalry
    • Construction Ship1 Con ship
    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 (48%) · Guard (47%) · Radar Tower (41%) · tidal (39%) · con turret (34%)

    By 10:00 in all: 9 mex · 12 wind · 4 wind · 4 tidal · 1 energy storage · 1 Naval Construction Turret

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

Counts are medians over the build's games: half of them build more, half fewer. The example game is arebee's (35 OS, 29/08/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine3 Wind to Airfirst at 1:52 · in 78% of games

You get

  • Finch1 Finch from Airfirst at 1:58 · in 82% of games
  • Lazarus1 Lazarus from Geofirst at 2:13 · in 61% of games
  • Hephaestus1 Heavy transport from Airfirst at 2:16 · in 68% of games
  • Construction Bot1 Con bot from Geofirst at 2:27 · in 69% of games
  • Hercules1 Light transport from Airfirst at 2:34 · in 32% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 8:09 · in 88% 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

881 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156800
4:0025322150
5:003703196100
6:005031534254
7:0064761096590
8:00807018331019
9:00968228531605
10:001159139782340
11:001381852093070
12:001635261593821
13:001911371834611
14:002195382645717
15:002492992576561
WHAT THE NUMBERS SAY

Standard Beach sea wins more than Geo sea's 50% and gets its Shipyard up faster, using early sea access before falling behind on land resources.

  • + Shipyard finishes by 1:57, faster than Geo sea's 3:18
  • + 54% team win rate beats the Cortex geo sea baseline
  • − Metal produced trails Geo sea's Cortex build, 24356 vs 28451 by 15:00
  • − T2 factory only lands in 35% of games by 12:42
THE EXAMPLE YOU ARE READING

arebee

35.3 OS · 29/08/2026

Open source match ↗

3 received units · includes a constructor
1365 metal received · 105595 energy received

Allied construction assistance is unknown. Timings are observations, not a promise of solo reproducibility.

Typical milestones

Shipyard1:57Middle 50%: 1:44–2:08 · n=879
Riptide3:52Middle 50%: 3:16–4:34 · n=867
Oppressor5:11Middle 50%: 4:16–6:08 · n=851
Advanced Metal Extractor9:58Middle 50%: 9:16–10:53 · n=746

Played most by

EpicTyrannus85games of this buildDamsko67games of this buildWaboum64games of this buildPRO_HYDRA60games of this buildMrCoolPotato51games of this build
Standard beach sea · Cortex Beach sea build order · BAR Build Atlas