BAR / BUILD ATLAS
← All builds
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 · 3 steps
    1. Mex ×3
    2. Wind ×3for Air
    3. ShipyardShipyarddone 1:27 · 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 · 22 steps
    1. Tidal ×2
    2. Construction ShipCon ship
    3. Tidal ×3
    4. Construction ShipCon ship
    5. Mex
    6. HerringMissile corvette
    7. Mex
    8. GuardGuard
    9. Mex
    10. RiptideFrigatedone 3:11 · typical 3:52
    11. Mex
    12. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    13. RiptideFrigate
    14. Con turret
    15. OrcaSubmarinedone 4:06
    16. Mex
    17. RiptideFrigate
    18. Tidal
    19. OrcaSubmarine
    20. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    21. Mex
    22. Wind
  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 · 110 steps
    1. Mex
    2. GuardGuard
    3. Wind
    4. Mex
    5. RiptideFrigate
    6. Wind
    7. RiptideFrigate
    8. Wind
    9. UrchinUrchin
    10. OrcaSubmarine
    11. Wind ×4
    12. OrcaSubmarine
    13. Wind
    14. Mex
    15. Wind
    16. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    17. Wind
    18. Naval Energy Converter
    19. OrcaSubmarine
    20. Wind
    21. Energy storage
    22. Naval Energy Converter
    23. OrcaSubmarine
    24. Wind
    25. OrcaSubmarine
    26. Wind
    27. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    28. Wind
    29. UrchinUrchin
    30. Wind ×3
    31. Death CavalryDeath Cavalry
    32. Advanced Metal ExtractorT2 mexdone 9:51 · typical 9:58
    33. Death CavalryDeath Cavalry
    34. Naval Construction Turret
    35. Wind
    36. Advanced Metal ExtractorT2 mex
    37. OrcaSubmarine
    38. Wind
    39. OrcaSubmarine
    40. Wind
    41. Advanced Metal ExtractorT2 mex
    42. OrcaSubmarine
    43. Wind
    44. SupporterGunboat ×2
    45. Wind
    46. SupporterGunboat
    47. Wind
    48. SupporterGunboat ×3
    49. Wind
    50. SupporterGunboat
    51. Wind
    52. SupporterGunboat ×6
    53. Advanced Metal ExtractorT2 mex
    54. SupporterGunboat ×5
    55. Death CavalryDeath Cavalry ×2
    56. SupporterGunboat ×8
    57. Construction ShipCon ship ×3
    58. Naval Construction Turret
    59. Tidal
    60. Wind
    61. Naval Construction Turret
    62. Wind ×3
    63. Naval Construction Turret
    64. Tidal
    65. Wind ×2
    66. Naval Construction Turret
    67. Wind
    68. Tidal
    69. Wind ×2
    70. Advanced ShipyardAdvanced Shipyarddone 14:17
    71. Tidal
    72. Wind
    73. Tidal
    74. Wind
    75. Tidal
    76. Wind
    77. Tidal
    78. HerringMissile corvette
    79. Tidal
    80. Wind ×2
    81. HerringMissile corvette
    82. Tidal
    83. Wind
    84. Tidal
    85. HerringMissile corvette
    86. Wind
    87. Tidal
    88. HerringMissile corvette
    89. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    90. Wind
    91. Tidal ×2
    92. HerringMissile corvette
    93. Wind
    94. Tidal ×2
    95. Advanced Construction SubAdvanced Construction Sub
    96. Wind ×2
    97. Tidal
    98. Wind ×2
    99. PathfinderPathfinder
    100. Tidal
    101. Wind ×2
    102. Tidal
    103. PathfinderPathfinder
    104. Wind
    105. Naval Energy Storage
    106. Wind
    107. PhantasmRadar jammer ship
    108. Tidal
    109. Wind
    110. Naval Advanced Metal ExtractorNaval Advanced Metal Extractornot finished by 15:00

Counts are medians over the build's games: half of them build more, half fewer. The example game is Happiness's (52 OS, 14/08/2026); 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

Happiness

51.6 OS · 14/08/2026

Open source match ↗

9 received units · includes a constructor
323 metal received · 50749 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