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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 · 813 distinct matches · 108 players · 84% of Cortex Beach sea games · team won 55% of 878 · 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 813 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 · 9 steps
    1. Mex
    2. Wind
    3. Mex
    4. Wind
    5. Mex
    6. Wind ×3
    7. Energy storage
    8. Wind
    9. ShipyardShipyarddone 2:00 · 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 · 17 steps
    1. Construction ShipCon ship ×2
    2. RiptideFrigatedone 2:47 · typical 3:52
    3. Naval Construction Turret
    4. Mex ×2
    5. Solar
    6. RiptideFrigate
    7. OppressorDestroyerdone 4:20 · typical 5:11
    8. Mex ×2
    9. GuardGuard
    10. Mexfor Geo sea
    11. SlingshotSlingshot
    12. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    13. UrchinUrchin
    14. HerringMissile corvette
    15. Death CavalryDeath Cavalry
    16. UrchinUrchin
    17. RiptideFrigate
  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 · 75 steps
    1. RiptideFrigate
    2. HerringMissile corvette
    3. Construction ShipCon ship
    4. OppressorDestroyer
    5. RiptideFrigate ×2
    6. Death CavalryDeath Cavalry
    7. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    8. OppressorDestroyer
    9. Advanced Metal ExtractorT2 mexdone 8:10 · typical 9:58
    10. Death CavalryDeath Cavalry
    11. RiptideFrigate
    12. Advanced Metal ExtractorT2 mex
    13. OppressorDestroyer
    14. UrchinUrchin
    15. OppressorDestroyer
    16. Construction ShipCon ship
    17. OppressorDestroyer
    18. Advanced Metal ExtractorT2 mex
    19. RiptideFrigate
    20. OppressorDestroyer
    21. Bot LabBot Labdone 10:27
    22. Construction BotCon bot ×2
    23. Metal storage
    24. Construction BotCon bot ×2
    25. Advanced Metal ExtractorT2 mex
    26. VeilVeil
    27. Con turret
    28. Solar
    29. PawnPawn
    30. HoundHound
    31. RocketeerRocketeer
    32. Converter
    33. Con turret
    34. Converter
    35. RocketeerRocketeer
    36. HoundHound
    37. Con turret
    38. Converter
    39. Con turret
    40. HoundHound
    41. PawnPawn
    42. Con turret
    43. Converter
    44. RocketeerRocketeer
    45. Con turret
    46. RocketeerRocketeer
    47. PawnPawn
    48. Con turret
    49. PawnPawn
    50. RocketeerRocketeer
    51. PawnPawn
    52. RocketeerRocketeer ×2
    53. Wind
    54. CrossbowCrossbow
    55. RocketeerRocketeer
    56. CrossbowCrossbow
    57. Wind
    58. Converter
    59. PawnPawn ×2
    60. RocketeerRocketeer
    61. PawnPawn
    62. Wind
    63. Advanced Metal ExtractorT2 mex
    64. PawnPawn ×2
    65. RocketeerRocketeer
    66. Wind
    67. PawnPawn ×2
    68. RocketeerRocketeer
    69. Wind
    70. PawnPawn ×3
    71. RocketeerRocketeer
    72. Wind
    73. PawnPawn ×2
    74. Wind
    75. PawnPawn

Counts are medians over the build's games: half of them build more, half fewer. The example game is Poseidon9's (36 OS, 08/09/2026); 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 62% 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

878 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156800
4:0025322150
5:003702197100
6:005032534253
7:0064761094589
8:00807318301025
9:00968328541608
10:001159239882343
11:001382052163080
12:001635261753814
13:001911472054610
14:002195382905714
15:002492492686556
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

Poseidon9

36.0 OS · 08/09/2026

Open source match ↗

278 received units · includes a constructor
5606 metal received · 77025 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=876
Riptide3:52Middle 50%: 3:16–4:34 · n=864
Oppressor5:11Middle 50%: 4:16–6:08 · n=849
Advanced Metal Extractor9:58Middle 50%: 9:16–10:53 · n=744

Played most by

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