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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 (93%)

#naval #eco · 1603 distinct matches · 207 players · 84% of Cortex Beach sea games · team won 55% of 1807 · Recently observed

HOW TO PLAY IT

Key timing: Shipyard by 1:56

  1. Open 3 mex, then send com to sea to build Shipyard by 1:56.
  2. Add tidal generators, wind and more mex to fund the shipyard.
  3. Pump Riptide first, then Oppressor to contest enemy sea entry.
  4. Get T2 constructor out to start scaling the naval economy.
  5. Transition into Advanced Metal Extractor as the economy phase begins.

Phase by phase

TYPICAL OF ITS 1603 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 ~1:56, middle half 1:43–2:07

    Some games also: Guard (30%)

    By 1:39 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 6 steps
    1. Mex ×2
    2. Wind ×2for Air
    3. Wind ×2
    4. Energy storage
    5. Mex
    6. ShipyardShipyarddone 1:49 · typical 1:56
  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 (46%) · mex (38%) · wind (37%) · submarine (36%) · wind (36%)

    By 5:00 in all: 8 mex · 3 wind · 2 tidal · 1 energy storage

    The example game in this phase · 26 steps
    1. SupporterGunboat ×2
    2. Construction ShipCon ship ×2
    3. Tidal ×2
    4. Mex
    5. Tidal
    6. Death CavalryDeath Cavalry
    7. Wind ×3
    8. Mex ×2
    9. Wind ×3
    10. Converter
    11. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    12. RiptideFrigatedone 3:57 · typical 3:50
    13. Converter
    14. Radar TowerRadar Tower
    15. Converter ×2
    16. UrchinUrchin
    17. Naval Construction Turret
    18. HerringMissile corvette
    19. Converter ×2
    20. OppressorDestroyernot finished by 15:00 · typical 5:15
    21. Wind ×3
    22. SupporterGunboat
    23. Wind
    24. SupporterGunboat
    25. Wind
    26. SupporterGunboat
  3. 3

    5:00 to 10:00

    Economy
    • Metal Extractor1Mex
    • Wind Turbine8Wind
    Builders
    • Construction Ship1 Con ship
    • Death Cavalry1 Death Cavalry
    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 (49%) · Guard (47%) · Radar Tower (40%) · tidal (39%) · wind (34%)

    By 10:00 in all: 9 mex · 10 wind · 4 wind · 4 tidal · 1 energy storage · 1 Naval Construction Turret

    The example game in this phase · 83 steps
    1. SupporterGunboat
    2. SentrySentry
    3. SupporterGunboat ×4
    4. HerringMissile corvette
    5. SentrySentry
    6. OppressorDestroyer
    7. Naval Construction Turret
    8. SentrySentry
    9. HerringMissile corvette
    10. Radar TowerRadar Tower
    11. Mex
    12. GuardGuard
    13. RiptideFrigate
    14. Radar TowerRadar Tower
    15. RiptideFrigate
    16. GuardGuard
    17. RiptideFrigate
    18. GuardGuard
    19. Mex
    20. RiptideFrigate
    21. Mex
    22. Tidal
    23. Mex ×2
    24. RiptideFrigate
    25. Tidal ×4
    26. SupporterGunboat
    27. Tidal
    28. SupporterGunboat ×4
    29. Con turret
    30. SupporterGunboat ×2
    31. HerringMissile corvette
    32. Advanced Metal ExtractorT2 mexdone 10:17 · typical 9:59
    33. HerringMissile corvette
    34. OppressorDestroyer
    35. Tidal
    36. Mex
    37. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    38. Tidal ×2
    39. OppressorDestroyer
    40. Tidal
    41. Advanced Metal ExtractorT2 mex
    42. HerringMissile corvette
    43. Tidal ×2
    44. Naval Construction Turret
    45. Advanced Metal ExtractorT2 mex
    46. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    47. Naval Construction Turret ×2
    48. Wind
    49. Naval Construction Turret
    50. Tidal ×2
    51. Wind
    52. Tidal
    53. Wind
    54. Tidal ×3
    55. Wind
    56. Tidal ×2
    57. Wind
    58. Tidal ×2
    59. Wind ×2
    60. Advanced Metal ExtractorT2 mex
    61. Naval Energy Storage
    62. Wind
    63. Naval Metal Storage
    64. Tidal
    65. Con turret
    66. Tidal ×4
    67. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    68. Tidal ×3
    69. Con turret
    70. Tidal ×2
    71. Con turret
    72. Advanced ShipyardAdvanced Shipyarddone 13:23
    73. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    74. Con turret ×2
    75. ShipyardEat Shipyardreclaimed for its metal
    76. Advanced Construction SubAdvanced Construction Sub
    77. Fusion ReactorFusiondone 14:53
    78. PathfinderPathfinder ×2
    79. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 14:27
    80. PathfinderPathfinder
    81. UrchinUrchin
    82. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    83. BrimstoneAnti-swarm shipnot finished by 15:00

Counts are medians over the build's games: half of them build more, half fewer. The example game is optimusprime3000's (31 OS, 14/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine3 Wind to Airfirst at 1:45 · in 77% of games

You get

  • Finch1 Finch from Airfirst at 2:00 · in 80% of games
  • Lazarus1 Lazarus from Geofirst at 2:13 · in 63% of games
  • Hephaestus1 Heavy transport from Airfirst at 2:16 · in 65% of games
  • Construction Bot1 Con bot from Geofirst at 2:26 · in 70% of games
  • Hercules1 Light transport from Airfirst at 2:34 · in 32% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 8:08 · in 89% 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

1807 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00155300
4:002539051
5:003717175101
6:005049484279
7:006492975591
8:00807316651000
9:00967926141532
10:001153637242320
11:001368447423102
12:001625058323861
13:001895168794645
14:002168079335680
15:002458688866524
WHAT THE NUMBERS SAY

Standard Beach sea play has the lowest team win rate of these builds and destroys far less enemy metal early than it loses eco time.

  • + Metal produced climbs to 24945 by 15:00, the highest of all six roles.
  • + Riptide and Oppressor together make 63% of army, a focused naval composition.
  • − Enemy metal destroyed is only 200 by 5:00, barely contesting early sea.
  • − T2 factory only reached in 35% of games, behind other roles' T2 timing.
THE EXAMPLE YOU ARE READING

optimusprime3000

31.0 OS · 14/10/2026

Open source match ↗

7 received units · includes a constructor
367 metal received · 83988 energy received

Allied construction assistance is unknown. Timings are observations, not a promise of solo reproducibility.

Typical milestones

Shipyard1:56Middle 50%: 1:43–2:07 · n=1804
Riptide3:50Middle 50%: 3:12–4:34 · n=1761
Oppressor5:15Middle 50%: 4:29–6:07 · n=1740
Advanced Metal Extractor9:59Middle 50%: 9:17–10:54 · n=1528

Played most by

EpicTyrannus120games of this buildDamsko69games of this buildKbot_my_Ahole67games of this buildfanboi64games of this buildSHOGVN64games of this build