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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 · 825 distinct matches · 110 players · 84% of Cortex Beach sea games · team won 54% of 892 · 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 825 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 1:40 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 8 steps
    1. Mex
    2. Wind
    3. Mex
    4. Wind
    5. Mex
    6. Wind ×6
    7. Energy storage
    8. ShipyardShipyarddone 2:11 · 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 (44%) · 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 · 15 steps
    1. Construction ShipCon ship ×2
    2. RiptideFrigatedone 3:03 · typical 3:52
    3. Naval Construction Turret
    4. Mex ×2
    5. Solar
    6. RiptideFrigate
    7. Mex ×2
    8. GuardGuard
    9. OppressorDestroyerdone 4:23 · typical 5:11
    10. Mex
    11. SlingshotSlingshot
    12. SupporterGunboat
    13. RiptideFrigate
    14. UrchinUrchin
    15. OppressorDestroyer
  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 (39%) · 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 · 68 steps
    1. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    2. Construction ShipCon ship
    3. UrchinUrchin
    4. Bot LabBot Labdone 6:39
    5. RiptideFrigate
    6. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    7. Construction BotCon bot
    8. UrchinUrchin
    9. Construction BotCon bot
    10. Advanced Metal ExtractorT2 mexdone 8:02 · typical 9:58
    11. Construction BotCon bot
    12. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    13. Naval Energy Converter
    14. Con turret
    15. UrchinUrchin
    16. Naval Energy Converter
    17. Advanced Metal ExtractorT2 mex
    18. TrasherTrasher
    19. Naval Construction Turret
    20. Solar
    21. RiptideFrigate
    22. SlingshotSlingshot
    23. OppressorDestroyer
    24. Advanced Metal ExtractorT2 mex
    25. HerringMissile corvette
    26. Death CavalryDeath Cavalry
    27. HerringMissile corvette
    28. Con turret
    29. RiptideFrigate
    30. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    31. HerringMissile corvette
    32. Advanced Metal ExtractorT2 mex
    33. Death CavalryDeath Cavalry
    34. SlingshotSlingshot
    35. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    36. HerringMissile corvette
    37. Wind ×2
    38. HerringMissile corvette
    39. Wind
    40. HerringMissile corvette
    41. Wind ×3
    42. UrchinUrchin
    43. Wind ×2
    44. UrchinUrchin
    45. Con turret
    46. HerringMissile corvette
    47. Fusion ReactorFusiondone 13:54
    48. Wind
    49. Solar
    50. HerringMissile corvette
    51. UrchinUrchin
    52. Wind
    53. Death CavalryDeath Cavalry
    54. Wind
    55. Construction ShipCon ship
    56. Death CavalryDeath Cavalry
    57. Naval Construction Turret
    58. Wind ×3
    59. T2 converter
    60. Naval Construction Turret
    61. Death CavalryDeath Cavalry
    62. Naval Construction Turret ×3
    63. RiptideFrigate
    64. Naval Construction Turret ×2
    65. ShipyardShipyarddone 14:52
    66. RiptideFrigate
    67. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    68. T2 converter

Counts are medians over the build's games: half of them build more, half fewer. The example game is Poseidon9's (36 OS, 08/09/2026); 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 83% of games
  • Lazarus1 Lazarus from Geofirst at 2:13 · in 61% of games
  • Hephaestus1 Heavy transport from Airfirst at 2:16 · in 68% of games
  • Construction Bot1 Con bot from Geofirst at 2:28 · in 69% of games
  • Hercules1 Light transport from Airfirst at 2:35 · 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

892 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156900
4:0025322150
5:003702197100
6:005028539254
7:0064751094590
8:00805918301030
9:00967428311593
10:001157339532337
11:001378351733061
12:001632161573805
13:001909171674590
14:002187982255701
15:002490392216529
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

36.0 OS · 08/09/2026

Open source match ↗

5 received units · includes a constructor
9 metal received · 101833 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=890
Riptide3:52Middle 50%: 3:15–4:34 · n=877
Oppressor5:11Middle 50%: 4:17–6:08 · n=861
Advanced Metal Extractor9:58Middle 50%: 9:17–10:53 · n=755

Played most by

EpicTyrannus86games of this buildDamsko67games of this buildWaboum64games of this buildPRO_HYDRA60games of this buildMrCoolPotato51games of this build