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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 · 812 distinct matches · 107 players · 84% of Cortex Beach sea games · team won 55% of 877 · 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 812 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 1:41 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 1:34 · 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 · 24 steps
    1. Tidal
    2. Construction ShipCon ship
    3. Tidal ×2
    4. Construction ShipCon ship
    5. Mex
    6. HerringMissile corvette
    7. Mex
    8. SlingshotSlingshot
    9. RiptideFrigate ×2done 2:59 · typical 3:52
    10. Naval Construction Turret
    11. Mex
    12. HerringMissile corvette
    13. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    14. Tidal
    15. Mex
    16. Death CavalryDeath Cavalry
    17. Tidal
    18. Naval Energy Converter
    19. Tidal
    20. OppressorDestroyerdone 5:44 · typical 5:11
    21. UrchinUrchin
    22. Tidal
    23. Wind
    24. Naval Energy Converter
  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 (38%) · 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 · 95 steps
    1. Wind
    2. UrchinUrchin
    3. Naval Energy Converter
    4. Tidal
    5. Converter
    6. Tidal
    7. GuardGuard
    8. UrchinUrchin
    9. Naval Energy Converter
    10. GuardGuard
    11. Naval Energy Converter
    12. Converter
    13. Tidal ×3
    14. GuardGuard
    15. Tidal
    16. Converter
    17. UrchinUrchin
    18. Tidal
    19. GuardGuard
    20. Tidal ×2
    21. GuardGuard
    22. Tidal
    23. OppressorDestroyer
    24. Radar TowerRadar Tower
    25. Converter
    26. Tidal
    27. Mex
    28. UrchinUrchin
    29. Mex
    30. Bot LabBot Labdone 8:02
    31. Naval Construction Turret
    32. Wind
    33. AggravatorAggravator ×2
    34. Wind
    35. AggravatorAggravator
    36. RiptideFrigate
    37. Naval Energy Converter
    38. Wind
    39. HerringMissile corvette
    40. AggravatorAggravator
    41. Naval Energy Converter
    42. Death CavalryDeath Cavalry
    43. Wind
    44. Naval Energy Converter
    45. Death CavalryDeath Cavalry
    46. Tidal
    47. Con turret
    48. Tidal ×2
    49. Radar TowerRadar Tower
    50. Tidal
    51. Death CavalryDeath Cavalry
    52. Naval Construction Turret
    53. RiptideFrigate
    54. OppressorDestroyer
    55. Naval Construction Turret
    56. GuardGuard
    57. HerringMissile corvette
    58. Tidal
    59. Death CavalryDeath Cavalry
    60. Tidal
    61. Advanced Metal ExtractorT2 mexdone 11:31 · typical 9:58
    62. RiptideFrigate
    63. Tidal ×2
    64. OppressorDestroyer
    65. Naval Energy Converter
    66. RiptideFrigate
    67. Naval Energy Converter
    68. RiptideFrigate
    69. Naval Construction Turret
    70. Advanced Metal ExtractorT2 mex
    71. Naval Energy Converter
    72. OppressorDestroyer
    73. Naval Energy Converter
    74. Tidal
    75. HerringMissile corvette ×2
    76. Tidal
    77. Construction ShipCon ship
    78. Tidal
    79. Construction ShipCon ship
    80. Tidal
    81. Advanced Metal ExtractorT2 mex
    82. Death CavalryDeath Cavalry ×3
    83. RiptideFrigate
    84. OppressorDestroyer
    85. RiptideFrigate
    86. HerringMissile corvette ×2
    87. RiptideFrigate
    88. Advanced Metal ExtractorT2 mex
    89. RiptideFrigate
    90. GuardGuard
    91. OppressorDestroyer
    92. HerringMissile corvette
    93. Construction ShipCon ship
    94. CitadelAnti-nukenot finished by 15:00
    95. Construction ShipCon ship ×3

Counts are medians over the build's games: half of them build more, half fewer. The example game is arebee's (36 OS, 28/08/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine3 Wind to Airfirst at 1:52 · in 79% of games

You get

  • Finch1 Finch from Airfirst at 1:58 · in 82% of games
  • Lazarus1 Lazarus from Geofirst at 2:13 · in 62% of games
  • Hephaestus1 Heavy transport from Airfirst at 2:16 · in 68% of games
  • Construction Bot1 Con bot from Geofirst at 2:28 · 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

877 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156800
4:0025312150
5:003701197100
6:005032534254
7:0064761096590
8:00807618331031
9:00968328541610
10:001159239942340
11:001382252133090
12:001635261643821
13:001911472004611
14:002195382755717
15:002492992706561
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

35.8 OS · 28/08/2026

Open source match ↗

5 received units · includes a constructor
678 metal received · 55593 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=875
Riptide3:52Middle 50%: 3:16–4:34 · n=863
Oppressor5:11Middle 50%: 4:16–6:08 · n=848
Advanced Metal Extractor9:58Middle 50%: 9:16–10:53 · n=743

Played most by

EpicTyrannus85games of this buildDamsko67games of this buildWaboum64games of this buildPRO_HYDRA60games of this buildMrCoolPotato51games of this build