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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 · 936 distinct matches · 113 players · 83% of Cortex Beach sea games · team won 54% of 1010 · Recently observed

HOW TO PLAY IT

Key timing: Shipyard by 1:57

  1. Grab mex and tidal, push com to sea to build shipyard.
  2. Finish shipyard and start pumping frigate and destroyer.
  3. Field first frigate to contest enemy sea entry or hold vision.
  4. Add destroyer to the mix as the fight for sea develops.
  5. Shift into advanced metal extractor as the economy transition.

Phase by phase

TYPICAL OF ITS 936 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 Turbine2Windfor allies
    • Wind Turbine2Wind
    • Energy Storage1Energy storage
    Order
    1. ShipyardShipyard after 3 mex, 2 wind, 1 energy storagedone ~1:56, middle half 1:41–2:07

    Some games also: tidal (31%)

    By 1:40 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 8 steps
    1. Mex ×2
    2. Windfor Air
    3. Mex
    4. Wind ×2for Air
    5. GuardGuard
    6. Wind
    7. Tidal
    8. ShipyardShipyarddone 1:53 · 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%) · wind (39%) · submarine (38%) · mex (36%) · gunboat (36%)

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

    The example game in this phase · 17 steps
    1. HerringMissile corvette ×2
    2. Construction ShipCon ship
    3. Tidal ×2
    4. Construction ShipCon ship
    5. Mex ×2
    6. Con turret
    7. Mex
    8. RiptideFrigatedone 3:49 · typical 3:49
    9. Mex
    10. RiptideFrigate
    11. SlingshotSlingshot
    12. Mex
    13. UrchinUrchin ×2
    14. RiptideFrigate
    15. Radar TowerRadar Tower
    16. Converter
    17. Tidal
  3. 3

    5:00 to 10:00

    Economy
    • Metal Extractor1Mex
    • Wind Turbine9Wind
    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%) · tidal (40%) · Radar Tower (40%) · con turret (35%)

    By 10:00 in all: 9 mex · 11 wind · 4 wind · 4 tidal · 1 energy storage · 1 Naval Construction Turret

    The example game in this phase · 72 steps
    1. Converter
    2. HerringMissile corvette
    3. Wind
    4. Death CavalryDeath Cavalry
    5. Wind
    6. OrcaSubmarinedone 6:08
    7. Wind
    8. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    9. Wind
    10. SupporterGunboat
    11. Wind
    12. OrcaSubmarine
    13. Wind
    14. Mex
    15. Wind ×2
    16. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    17. Wind
    18. HerringMissile corvette
    19. Wind
    20. Death CavalryDeath Cavalry
    21. Wind ×5
    22. RiptideFrigate
    23. Wind
    24. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    25. RiptideFrigate
    26. Wind
    27. RiptideFrigate
    28. Wind
    29. Converter
    30. Advanced Metal ExtractorT2 mexdone 9:48 · typical 9:58
    31. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    32. Converter
    33. OrcaSubmarine
    34. Converter ×2
    35. OrcaSubmarine
    36. Advanced Metal ExtractorT2 mex
    37. HerringMissile corvette
    38. Construction ShipCon ship ×2
    39. Death CavalryDeath Cavalry
    40. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    41. Advanced Metal ExtractorT2 mex
    42. RiptideFrigate
    43. Mex
    44. RiptideFrigate
    45. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    46. Death CavalryDeath Cavalry
    47. Con turret
    48. Death CavalryDeath Cavalry
    49. Dragon's MawDragon's Maw
    50. OrcaSubmarine
    51. Advanced Metal ExtractorT2 mex
    52. Energy storage
    53. Mex
    54. Wind ×3
    55. Construction ShipCon ship
    56. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    57. Wind
    58. OrcaSubmarine
    59. Wind
    60. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    61. OrcaSubmarine
    62. Wind
    63. OrcaSubmarine
    64. Wind
    65. OrcaSubmarine
    66. Wind ×2
    67. Bot LabBot Labdone 14:24
    68. Wind
    69. OrcaSubmarine
    70. Wind
    71. GuardGuard
    72. OrcaSubmarine

Counts are medians over the build's games: half of them build more, half fewer. The example game is [MooDeng]NongJohn's (39 OS, 09/10/2026); 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 1:59 · in 82% of games
  • Lazarus1 Lazarus from Geofirst at 2:14 · in 63% of games
  • Hephaestus1 Heavy transport from Airfirst at 2:16 · in 67% of games
  • Construction Bot1 Con bot from Geofirst at 2:27 · in 70% of games
  • Hercules1 Light transport from Airfirst at 2:32 · in 32% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 8:09 · 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

1010 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156900
4:002539051
5:003716197100
6:005042539261
7:0064871073591
8:00805918071017
9:00967727771581
10:001157139182311
11:001375649653051
12:001628560633828
13:001908671174611
14:002185281925714
15:002489293126589
WHAT THE NUMBERS SAY

Standard sea-first play for Beach sea, with the lowest team win rate of the roles shown at 54% and a big gap in metal destroyed vs lost by 15:00.

  • + Metal produced hits 24892 by 15:00, second highest overall shown.
  • − Enemy metal destroyed only 9261 by 15:00 against own losses of 6529, a tight margin for a sea role.
THE EXAMPLE YOU ARE READING

[MooDeng]NongJohn

39.0 OS · 09/10/2026

Open source match ↗

7 received units · includes a constructor
37 metal received · 19953 energy received

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

Typical milestones

Shipyard1:56Middle 50%: 1:41–2:07 · n=1008
Riptide3:49Middle 50%: 3:15–4:32 · n=989
Oppressor5:12Middle 50%: 4:22–6:07 · n=971
Advanced Metal Extractor9:58Middle 50%: 9:17–10:54 · n=854

Played most by

EpicTyrannus99games of this buildDamsko68games of this buildKbot_my_Ahole64games of this buildWaboum64games of this buildPRO_HYDRA63games of this build