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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 · 5 steps
    1. Mex ×3
    2. Wind ×6
    3. Energy storage
    4. Wind
    5. ShipyardShipyarddone 2:11 · 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 · 10 steps
    1. Tidal
    2. HerringMissile corvette ×2
    3. Construction ShipCon ship ×2
    4. Mex
    5. Construction ShipCon ship
    6. OppressorDestroyerdone 4:16 · typical 5:11
    7. Mex ×2
    8. Con turret
    9. Mex
    10. OrcaSubmarinedone 5:13
  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 · 88 steps
    1. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    2. Wind
    3. HerringMissile corvette
    4. Wind ×2
    5. OppressorDestroyer
    6. SentrySentry ×3
    7. Mex
    8. RiptideFrigate ×2done 7:07 · typical 3:52
    9. Mex
    10. Con turret
    11. HerringMissile corvette
    12. Mex
    13. HerringMissile corvette ×2
    14. SentrySentry
    15. Advanced Metal ExtractorT2 mexdone 9:07 · typical 9:58
    16. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    17. Tidal
    18. Radar TowerRadar Tower
    19. Wind
    20. Tidal ×2
    21. Wind
    22. Advanced Metal ExtractorT2 mex
    23. UrchinUrchin
    24. Wind ×2
    25. RiptideFrigate
    26. Wind
    27. Advanced Metal ExtractorT2 mex
    28. RiptideFrigate
    29. Wind
    30. RiptideFrigate ×2
    31. Wind
    32. RiptideFrigate
    33. Radar TowerRadar Tower
    34. RiptideFrigate
    35. NettleNettle
    36. Converter
    37. RiptideFrigate
    38. Converter
    39. RiptideFrigate
    40. Converter
    41. RiptideFrigate
    42. Converter
    43. Advanced Metal ExtractorT2 mex
    44. Converter
    45. RiptideFrigate
    46. Converter
    47. Death CavalryDeath Cavalry
    48. Converter ×2
    49. Death CavalryDeath Cavalry
    50. Wind
    51. RiptideFrigate
    52. Wind ×2
    53. RiptideFrigate
    54. Wind
    55. Death CavalryDeath Cavalry
    56. Wind ×2
    57. RiptideFrigate
    58. Wind
    59. RiptideFrigate
    60. Wind ×2
    61. RiptideFrigate
    62. Wind ×2
    63. RiptideFrigate
    64. Wind
    65. Advanced Metal ExtractorT2 mex
    66. RiptideFrigate
    67. Wind ×2
    68. RiptideFrigate
    69. Wind
    70. GuardGuard
    71. Wind
    72. RiptideFrigate
    73. Wind
    74. RiptideFrigate
    75. Wind
    76. RiptideFrigate
    77. Wind ×2
    78. RiptideFrigate
    79. Wind
    80. UrchinUrchin
    81. Wind
    82. RiptideFrigate
    83. Wind
    84. RiptideFrigate
    85. Wind
    86. Advanced Metal ExtractorT2 mex
    87. Death CavalryDeath Cavalry
    88. Wind

Counts are medians over the build's games: half of them build more, half fewer. The example game is Zippo9's (37 OS, 16/08/2026); 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

Zippo9

37.5 OS · 16/08/2026

Open source match ↗

7 received units · includes a constructor
115 metal received · 46864 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