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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 · 1571 distinct matches · 206 players · 84% of Cortex Beach sea games · team won 55% of 1775 · 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 1571 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

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

    The example game in this phase · 7 steps
    1. Mex ×3
    2. Wind ×2for Air
    3. Wind
    4. Windfor Air
    5. Energy storage
    6. Tidal
    7. ShipyardShipyarddone 1:58 · 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 · 21 steps
    1. Tidal
    2. HerringMissile corvette ×2
    3. Construction ShipCon ship
    4. Mex
    5. Construction ShipCon ship
    6. Con turret
    7. OppressorDestroyerdone 4:18 · typical 5:15
    8. Mex ×3
    9. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    10. Wind
    11. RiptideFrigatedone 5:08 · typical 3:50
    12. Mex
    13. Wind
    14. Mex
    15. Wind
    16. Tidal
    17. Mex
    18. Wind
    19. GuardGuard
    20. Wind
    21. Tidal
  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%) · tidal (39%) · Radar Tower (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 · 32 steps
    1. Wind ×2
    2. RiptideFrigate
    3. GuardGuard
    4. Wind
    5. Tidal
    6. Wind ×3
    7. HerringMissile corvette
    8. Wind
    9. RiptideFrigate
    10. Wind ×3
    11. RiptideFrigate
    12. HerringMissile corvette
    13. Wind ×2
    14. HerringMissile corvette
    15. Wind
    16. RiptideFrigate
    17. Mex
    18. Wind ×3
    19. Death CavalryDeath Cavalry
    20. Wind ×4
    21. Death CavalryDeath Cavalry
    22. Construction ShipCon ship
    23. Wind
    24. Death CavalryDeath Cavalry
    25. Wind ×2
    26. OppressorDestroyer
    27. Wind ×2
    28. OppressorDestroyer
    29. Death CavalryDeath Cavalry
    30. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    31. OppressorDestroyer
    32. Converter ×2

Counts are medians over the build's games: half of them build more, half fewer. The example game is Jonjo_13's (30 OS, 09/08/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine3 Wind to Airfirst at 1:46 · 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 2:27 · 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

1775 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00155300
4:002539051
5:003717176102
6:005045484281
7:006489971594
8:00807016651001
9:00968226061531
10:001154137252322
11:001368547573102
12:001625058703875
13:001896068784650
14:002168079205680
15:002461088436501
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

Jonjo_13

30.0 OS · 09/08/2026

Open source match ↗

5 received units · includes a constructor
54 metal received · 22596 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=1772
Riptide3:50Middle 50%: 3:12–4:34 · n=1729
Oppressor5:15Middle 50%: 4:28–6:06 · n=1711
Advanced Metal Extractor9:58Middle 50%: 9:17–10:55 · n=1500

Played most by

EpicTyrannus120games of this buildDamsko69games of this buildKbot_my_Ahole67games of this buildWaboum64games of this buildPRO_HYDRA63games of this build
Standard beach sea · Cortex Beach sea build order · BAR Build Atlas