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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 · 1584 distinct matches · 206 players · 84% of Cortex Beach sea games · team won 55% of 1788 · 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 1584 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 · 3 steps
    1. Mex ×3
    2. Wind ×3
    3. ShipyardShipyarddone 1:48 · 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 · 19 steps
    1. Construction ShipCon ship
    2. Tidal
    3. Mex
    4. SupporterGunboat
    5. Tidal
    6. SupporterGunboat
    7. Mex
    8. SupporterGunboat
    9. Tidal
    10. HerringMissile corvette ×2
    11. Mex
    12. HerringMissile corvette ×2
    13. Mex
    14. HerringMissile corvette ×2
    15. Mex
    16. HerringMissile corvette ×3
    17. Con turret
    18. Converter
    19. HerringMissile corvette ×2
  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 (39%) · 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 · 49 steps
    1. HerringMissile corvette ×3
    2. OppressorDestroyerdone 6:23 · typical 5:15
    3. Tidal
    4. Wind ×3
    5. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    6. HerringMissile corvette
    7. Wind
    8. HerringMissile corvette
    9. Death CavalryDeath Cavalry
    10. Wind ×2
    11. HerringMissile corvette
    12. Wind
    13. HerringMissile corvette
    14. Wind
    15. HerringMissile corvette
    16. Mex
    17. Advanced Metal ExtractorT2 mexdone 8:55 · typical 9:58
    18. HerringMissile corvette
    19. Wind
    20. HerringMissile corvette
    21. Wind
    22. HerringMissile corvette ×2
    23. Wind
    24. HerringMissile corvette
    25. Construction ShipCon ship
    26. HerringMissile corvette
    27. Construction ShipCon ship
    28. Wind
    29. Advanced Metal ExtractorT2 mex
    30. Wind ×2
    31. Energy storage
    32. Advanced ShipyardAdvanced Shipyarddone 10:42
    33. Advanced Metal ExtractorT2 mex
    34. Wind
    35. Tidal
    36. Wind
    37. Advanced Metal ExtractorT2 mex
    38. Wind
    39. PathfinderPathfinder
    40. Wind
    41. PathfinderPathfinder
    42. Advanced Construction SubAdvanced Construction Sub
    43. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    44. PathfinderPathfinder
    45. ShipyardEat Shipyardreclaimed for its metal
    46. PathfinderPathfinder
    47. Arrow StormAnti-air shipdone 12:00
    48. Naval Advanced Metal ExtractorNaval Advanced Metal Extractornot finished by 15:00
    49. Mex

Counts are medians over the build's games: half of them build more, half fewer. The example game is Reasonable1337's (30 OS, 06/09/2026); 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 64% 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

1788 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00155300
4:002540051
5:003717178101
6:005047485280
7:006492974594
8:00807016681001
9:00967726081532
10:001153637112321
11:001368547433104
12:001625058443875
13:001895468744648
14:002167279145686
15:002457688436511
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

Reasonable1337

30.1 OS · 06/09/2026

Open source match ↗

3 received units · includes a constructor
402 metal received · 7692 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=1785
Riptide3:50Middle 50%: 3:12–4:34 · n=1742
Oppressor5:15Middle 50%: 4:29–6:06 · n=1721
Advanced Metal Extractor9:58Middle 50%: 9:17–10:54 · n=1512

Played most by

EpicTyrannus120games of this buildDamsko69games of this buildKbot_my_Ahole67games of this buildWaboum64games of this buildPRO_HYDRA63games of this build