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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 · 825 distinct matches · 110 players · 84% of Cortex Beach sea games · team won 55% of 893 · 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 825 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 1:40 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 8 steps
    1. Mex ×3
    2. Wind ×2for Air
    3. Wind
    4. GuardGuard
    5. Windfor Air
    6. Energy storage
    7. Wind ×2
    8. ShipyardShipyarddone 2:13 · 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 (44%) · 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 · 14 steps
    1. HerringMissile corvette
    2. Construction ShipCon ship ×2
    3. HerringMissile corvette
    4. Mex
    5. OrcaSubmarinedone 3:48
    6. Mex ×3
    7. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    8. RiptideFrigatedone 4:09 · typical 3:52
    9. Con turret
    10. RiptideFrigate
    11. Mex
    12. ThistleThistle
    13. Death CavalryDeath Cavalry
    14. Mex
  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 (39%) · 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 · 90 steps
    1. Radar TowerRadar Tower
    2. GuardGuard
    3. OrcaSubmarine
    4. GuardGuard ×2
    5. Mex
    6. GuardGuard
    7. Death CavalryDeath Cavalry
    8. GuardGuard
    9. Wind ×3
    10. OppressorDestroyerdone 7:24 · typical 5:11
    11. Wind
    12. Radar TowerRadar Tower
    13. Wind
    14. ThistleThistle
    15. Wind ×4
    16. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    17. Wind ×2
    18. GuardGuard
    19. SupporterGunboat
    20. Wind
    21. GuardGuard
    22. SupporterGunboat
    23. Wind
    24. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    25. SupporterGunboat
    26. Wind ×2
    27. SupporterGunboat
    28. Wind ×2
    29. SupporterGunboat
    30. Wind
    31. RiptideFrigate
    32. Advanced Metal ExtractorT2 mexdone 9:22 · typical 9:58
    33. Wind
    34. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    35. RiptideFrigate
    36. Mex
    37. RiptideFrigate
    38. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    39. Advanced Metal ExtractorT2 mex
    40. Death CavalryDeath Cavalry
    41. Mex
    42. RiptideFrigate
    43. Advanced Metal ExtractorT2 mex
    44. RiptideFrigate
    45. Naval Construction Turret
    46. RiptideFrigate
    47. HerringMissile corvette
    48. Death CavalryDeath Cavalry
    49. SupporterGunboat ×2
    50. Advanced Metal ExtractorT2 mex
    51. SupporterGunboat
    52. OppressorDestroyer
    53. Naval Construction Turret
    54. RiptideFrigate ×3
    55. Naval Construction Turret
    56. RiptideFrigate
    57. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    58. HerringMissile corvette
    59. Death CavalryDeath Cavalry
    60. Naval Construction Turret
    61. OppressorDestroyer
    62. Mex
    63. Tidal
    64. Fusion ReactorFusionnot finished by 15:00
    65. Tidal
    66. RiptideFrigate
    67. Tidal ×2
    68. RiptideFrigate
    69. Tidal ×2
    70. RiptideFrigate
    71. Tidal ×2
    72. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    73. Tidal
    74. RiptideFrigate
    75. Tidal
    76. Advanced Metal ExtractorT2 mex
    77. Tidal
    78. HerringMissile corvette
    79. Tidal
    80. Death CavalryDeath Cavalry
    81. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    82. Tidal
    83. GuardGuard
    84. OppressorDestroyer
    85. Tidal ×2
    86. GuardGuard
    87. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    88. Advanced ShipyardAdvanced Shipyardnot finished by 15:00
    89. SupporterGunboat
    90. GuardGuard

Counts are medians over the build's games: half of them build more, half fewer. The example game is thermite's (36 OS, 01/10/2026); 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 61% 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 2:35 · 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

893 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156900
4:0025322150
5:003703197100
6:005029538254
7:0064741091590
8:00805618261031
9:00967328311605
10:001157039442340
11:001378151713070
12:001631761563806
13:001908271534609
14:002186582105711
15:002489892026531
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

thermite

36.0 OS · 01/10/2026

Open source match ↗

6 received units · includes a constructor
1475 metal received · 80794 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=891
Riptide3:52Middle 50%: 3:15–4:34 · n=878
Oppressor5:11Middle 50%: 4:17–6:08 · n=861
Advanced Metal Extractor9:58Middle 50%: 9:17–10:53 · n=755

Played most by

EpicTyrannus86games of this buildDamsko67games of this buildWaboum64games of this buildPRO_HYDRA60games of this buildMrCoolPotato51games of this build
Standard beach sea · Cortex Beach sea build order · BAR Build Atlas