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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 · 935 distinct matches · 113 players · 83% of Cortex Beach sea games · team won 54% of 1009 · 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 935 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 · 3 steps
    1. Mex ×3
    2. Tidal ×2
    3. ShipyardShipyarddone 1:24 · 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 · 23 steps
    1. Windfor Air
    2. Construction ShipCon ship
    3. Wind ×2for Air
    4. Tidal ×2
    5. Construction ShipCon ship
    6. Tidal ×2
    7. Mex
    8. HerringMissile corvette
    9. Energy storage
    10. Mex
    11. HerringMissile corvette
    12. Mex
    13. Wind ×2
    14. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    15. Wind ×2
    16. RiptideFrigatedone 3:49 · typical 3:49
    17. OrcaSubmarinedone 4:34
    18. Mex
    19. RiptideFrigate
    20. GuardGuard
    21. OppressorDestroyerdone 5:30 · typical 5:12
    22. Con turret
    23. Mex ×2
  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%) · Radar Tower (40%) · tidal (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 · 56 steps
    1. Death CavalryDeath Cavalry
    2. HerringMissile corvette
    3. GuardGuard
    4. Wind
    5. Construction ShipCon ship
    6. Wind
    7. Construction ShipCon ship
    8. Wind
    9. RiptideFrigate
    10. Wind
    11. Converter
    12. Wind
    13. RiptideFrigate
    14. Wind
    15. Converter
    16. RiptideFrigate
    17. Wind
    18. Death CavalryDeath Cavalry
    19. Wind
    20. HerringMissile corvette
    21. Wind
    22. Converter
    23. Construction ShipCon ship
    24. Wind
    25. Construction ShipCon ship
    26. Wind
    27. OrcaSubmarine
    28. SupporterGunboat ×2
    29. Wind
    30. Converter
    31. SupporterGunboat ×2
    32. Wind
    33. SupporterGunboat ×3
    34. Wind
    35. SupporterGunboat
    36. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    37. SupporterGunboat
    38. Converter
    39. SupporterGunboat
    40. Wind
    41. SupporterGunboat
    42. RiptideFrigate
    43. Wind
    44. RiptideFrigate
    45. Converter
    46. Wind
    47. RiptideFrigate
    48. Wind
    49. Death CavalryDeath Cavalry
    50. Converter
    51. Wind
    52. RiptideFrigate
    53. HerringMissile corvette
    54. Wind
    55. OrcaSubmarine
    56. Wind ×3

Counts are medians over the build's games: half of them build more, half fewer. The example game is Erilium's (46 OS, 06/10/2026); 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

1009 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156900
4:002538051
5:003715197100
6:005041540261
7:0064861074590
8:00805618061014
9:00967627771581
10:001157039202310
11:001375549693051
12:001628260643825
13:001909071214611
14:002186582015711
15:002489893256582
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

Erilium

46.2 OS · 06/10/2026

Open source match ↗

5 received units · includes a constructor
134 metal received · 19424 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=1007
Riptide3:49Middle 50%: 3:15–4:32 · n=988
Oppressor5:12Middle 50%: 4:22–6:07 · n=970
Advanced Metal Extractor9:58Middle 50%: 9:17–10:54 · n=853

Played most by

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