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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 · 813 distinct matches · 108 players · 84% of Cortex Beach sea games · team won 55% of 878 · Recently observed

HOW TO PLAY IT

Key timing: Shipyard by 1:57

  1. Open 3 mex and wind while com heads straight to sea.
  2. Drop Shipyard fast, before 2:00, to seize early sea presence.
  3. Push "frigate" out to contest enemy sea entry or hold vision.
  4. Add "destroyer" as the fleet grows.
  5. Transition into Advanced Metal Extractor to catch up on eco.

Phase by phase

TYPICAL OF ITS 813 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 ~1:57, middle half 1:44–2:08

    By 1:41 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 16 steps
    1. Mex
    2. Wind
    3. Mex
    4. Wind
    5. Mex
    6. Wind ×4
    7. Energy storage
    8. Wind
    9. Hovercraft PlatformHovercraft Platformdone 2:04
    10. Wind
    11. GoonGoon ×4
    12. Construction HovercraftCon hovercraftfor Pond
    13. Construction HovercraftCon hovercraft
    14. Construction HovercraftCon hovercraftfor Pond
    15. Mex ×3
    16. ShipyardShipyarddone 4:04 · typical 1:57
  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 (43%) · wind (40%) · submarine (39%) · gunboat (36%) · con turret (35%)

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

    The example game in this phase · 5 steps
    1. RiptideFrigate ×2done 4:17 · typical 3:52
    2. OppressorDestroyerdone 5:07 · typical 5:11
    3. Mex
    4. GuardGuard
    5. Mex
  3. 3

    5:00 to 10:00

    Economy
    • Metal Extractor1Mex
    • Wind Turbine10Wind
    Builders
    • Death Cavalry1 Death Cavalry
    • Construction Ship1 Con ship
    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 (48%) · Guard (47%) · Radar Tower (41%) · tidal (38%) · con turret (34%)

    By 10:00 in all: 9 mex · 12 wind · 4 wind · 4 tidal · 1 energy storage · 1 Naval Construction Turret

    The example game in this phase · 54 steps
    1. HerringMissile corvette
    2. Wind ×2
    3. ThistleThistle
    4. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    5. Converter
    6. Death CavalryDeath Cavalry
    7. Converter
    8. Con turret
    9. GuardGuard
    10. RiptideFrigate
    11. SupporterGunboat ×2
    12. RiptideFrigate
    13. HerringMissile corvette
    14. RiptideFrigate
    15. Death CavalryDeath Cavalry
    16. HerringMissile corvette
    17. OppressorDestroyer
    18. Advanced Metal ExtractorT2 mexdone 9:09 · typical 9:58
    19. Naval Radar / Sonar TowerNaval Radar / Sonar Tower ×2
    20. RiptideFrigate ×2
    21. Construction ShipCon ship
    22. SlingshotSlingshot
    23. OppressorDestroyer
    24. UrchinUrchin
    25. Advanced Metal ExtractorT2 mex
    26. UrchinUrchin
    27. Mex
    28. Tidal
    29. HerringMissile corvette
    30. Tidal ×6
    31. OppressorDestroyer
    32. Tidal
    33. Advanced Metal ExtractorT2 mex
    34. Tidal
    35. Bot LabBot Labdone 11:33
    36. RiptideFrigate
    37. OppressorDestroyer
    38. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    39. Naval Construction Turret
    40. Construction BotCon bot ×2
    41. OppressorDestroyer
    42. Construction BotCon bot
    43. HerringMissile corvette ×2
    44. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    45. Death CavalryDeath Cavalry
    46. UrchinUrchin
    47. Advanced Metal ExtractorT2 mex
    48. RiptideFrigate ×3
    49. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    50. SupporterGunboat ×6
    51. SlingshotSlingshot
    52. SupporterGunboat ×4
    53. Con turret
    54. Solar ×2

Counts are medians over the build's games: half of them build more, half fewer. The example game is Poseidon9's (36 OS, 26/08/2026); 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 1:58 · in 82% of games
  • Lazarus1 Lazarus from Geofirst at 2:13 · in 62% of games
  • Hephaestus1 Heavy transport from Airfirst at 2:16 · in 68% of games
  • Construction Bot1 Con bot from Geofirst at 2:27 · in 69% of games
  • Hercules1 Light transport from Airfirst at 2:34 · in 32% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 8:09 · in 88% 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

878 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156800
4:0025322150
5:003702197100
6:005032534253
7:0064761094589
8:00807318301025
9:00968328541608
10:001159239882343
11:001382052163080
12:001635261753814
13:001911472054610
14:002195382905714
15:002492492686556
WHAT THE NUMBERS SAY

Standard Beach sea wins more than Geo sea's 50% and gets its Shipyard up faster, using early sea access before falling behind on land resources.

  • + Shipyard finishes by 1:57, faster than Geo sea's 3:18
  • + 54% team win rate beats the Cortex geo sea baseline
  • − Metal produced trails Geo sea's Cortex build, 24356 vs 28451 by 15:00
  • − T2 factory only lands in 35% of games by 12:42
THE EXAMPLE YOU ARE READING

Poseidon9

35.5 OS · 26/08/2026

Open source match ↗

13 received units · includes a constructor
71 metal received · 35643 energy received

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

Typical milestones

Shipyard1:57Middle 50%: 1:44–2:08 · n=876
Riptide3:52Middle 50%: 3:16–4:34 · n=864
Oppressor5:11Middle 50%: 4:16–6:08 · n=849
Advanced Metal Extractor9:58Middle 50%: 9:16–10:53 · n=744

Played most by

EpicTyrannus85games of this buildDamsko67games of this buildWaboum64games of this buildPRO_HYDRA60games of this buildMrCoolPotato51games of this build