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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 · 6 steps
    1. Mex ×3
    2. Wind
    3. Wind ×3for Air
    4. Energy storage
    5. Tidal
    6. ShipyardShipyarddone 1:58 · 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 · 20 steps
    1. Tidal
    2. Construction ShipCon ship ×2
    3. Mex
    4. SupporterGunboat ×2
    5. HerringMissile corvette
    6. Mex ×2
    7. HerringMissile corvette
    8. SentrySentry
    9. RiptideFrigatedone 3:36 · typical 3:52
    10. Converter
    11. Mex
    12. Converter
    13. RiptideFrigate
    14. Mex
    15. OppressorDestroyerdone 4:58 · typical 5:11
    16. UrchinUrchin
    17. Wind ×2
    18. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    19. Wind
    20. Construction ShipCon ship
  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 · 100 steps
    1. Wind ×2
    2. HerringMissile corvette
    3. Mex
    4. Wind
    5. Death CavalryDeath Cavalry
    6. GuardGuard
    7. UrchinUrchin
    8. Con turret
    9. RiptideFrigate
    10. Mex
    11. RiptideFrigate
    12. GuardGuard ×2
    13. RiptideFrigate
    14. UrchinUrchin
    15. Wind
    16. RiptideFrigate
    17. Radar TowerRadar Tower
    18. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    19. RiptideFrigate
    20. ThistleThistle
    21. Wind
    22. HerringMissile corvette
    23. Construction ShipCon ship
    24. Wind
    25. Wind
    26. Construction ShipCon ship
    27. Wind
    28. Wind
    29. Wind
    30. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    31. Wind
    32. UrchinUrchin ×2
    33. BeholderBeholder
    34. Wind
    35. HerringMissile corvette
    36. Wind
    37. SupporterGunboat
    38. Wind ×4
    39. Mex
    40. Wind
    41. Con turret
    42. Wind ×2
    43. Advanced Metal ExtractorT2 mexdone 9:49 · typical 9:58
    44. ShipyardShipyarddone 9:20
    45. Mex
    46. Wind ×2
    47. UrchinUrchin
    48. Wind ×4
    49. Construction ShipCon ship
    50. Wind
    51. Wind
    52. Wind
    53. Construction ShipCon ship
    54. Wind
    55. Wind
    56. Wind
    57. Wind
    58. Advanced Metal ExtractorT2 mex
    59. Naval Construction Turret
    60. Death CavalryDeath Cavalry
    61. GuardGuard
    62. Naval Construction Turret
    63. Wind
    64. Naval Construction Turret
    65. SupporterGunboat
    66. UrchinUrchin
    67. Advanced ShipyardAdvanced Shipyarddone 11:01
    68. Advanced Metal ExtractorT2 mex
    69. SkaterSkater
    70. Advanced Construction SubAdvanced Construction Sub
    71. HerringMissile corvette
    72. UrchinUrchin
    73. PathfinderPathfinder ×3
    74. SkaterSkater
    75. PathfinderPathfinder
    76. SlingshotSlingshot
    77. PathfinderPathfinder
    78. Advanced Metal ExtractorT2 mex
    79. Tidal
    80. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 12:44
    81. Tidal ×4
    82. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    83. Tidal ×3
    84. OasisOasis
    85. Naval Construction Turret ×2
    86. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    87. Wind
    88. PhantasmRadar jammer ship
    89. Wind
    90. Naval Construction Turret
    91. Wind
    92. DespotBattleshipdone 14:22
    93. Wind ×4
    94. MessengerCruise missile shipdone 14:38
    95. Wind ×2
    96. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    97. Arrow StormAnti-air shipdone 14:55
    98. Wind ×2
    99. BuccaneerCruisernot finished by 15:00
    100. Dragon's MawDragon's Maw

Counts are medians over the build's games: half of them build more, half fewer. The example game is RAM_WetRat's (44 OS, 20/09/2026); 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

RAM_WetRat

44.0 OS · 20/09/2026

Open source match ↗

5 received units · includes a constructor
1329 metal received · 61572 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