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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 · 812 distinct matches · 107 players · 84% of Cortex Beach sea games · team won 55% of 877 · 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 812 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 · 3 steps
    1. Mex ×3
    2. Tidal ×3
    3. ShipyardShipyarddone 1:31 · 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 · 19 steps
    1. Windfor unknown
    2. HerringMissile corvette
    3. Wind ×2for unknown
    4. Construction ShipCon ship
    5. HerringMissile corvette
    6. Construction ShipCon ship
    7. Tidal
    8. Construction ShipCon ship
    9. OppressorDestroyerdone 4:18 · typical 5:11
    10. Mex ×2
    11. Con turret
    12. Mex ×3
    13. Naval Radar / Sonar TowerNaval Radar / Sonar Tower ×3
    14. Mex
    15. RiptideFrigatedone 4:45 · typical 3:52
    16. Energy storage
    17. Mex
    18. RiptideFrigate
    19. Radar TowerRadar Tower
  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 · 59 steps
    1. Wind
    2. Death CavalryDeath Cavalry
    3. Wind
    4. RiptideFrigate
    5. Wind
    6. RiptideFrigate
    7. Wind ×2
    8. RiptideFrigate
    9. Wind ×2
    10. HerringMissile corvette
    11. RiptideFrigate
    12. Wind
    13. OppressorDestroyer
    14. GuardGuard
    15. Wind
    16. UrchinUrchin
    17. BeholderBeholder
    18. Wind
    19. Death CavalryDeath Cavalry
    20. Wind ×2
    21. RiptideFrigate
    22. Wind ×2
    23. RiptideFrigate
    24. Wind
    25. HerringMissile corvette
    26. Wind
    27. RiptideFrigate
    28. OppressorDestroyer
    29. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    30. Death CavalryDeath Cavalry
    31. RiptideFrigate ×2
    32. BeamerBeamer
    33. HerringMissile corvette
    34. RiptideFrigate
    35. OppressorDestroyer
    36. Naval Hovercraft PlatformNaval Hovercraft Platformdone 11:08
    37. Con turret
    38. SentrySentry
    39. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    40. BirdeaterHover anti-air
    41. UrchinUrchin
    42. Con turret
    43. MangonelHover rocket bot
    44. Mex
    45. MangonelHover rocket bot
    46. ShipyardShipyarddone 12:10
    47. Construction ShipCon ship
    48. GoonGoon ×5
    49. Advanced ShipyardAdvanced Shipyarddone 14:16
    50. BirdeaterHover anti-air
    51. MangonelHover rocket bot
    52. Advanced Metal ExtractorT2 mexdone 14:56 · typical 9:58
    53. MangonelHover rocket bot
    54. Grim ReaperGrim Reaper
    55. GoonGoon
    56. Grim ReaperGrim Reaper
    57. Advanced Construction SubAdvanced Construction Sub
    58. SkaterSkater ×3
    59. Advanced Metal ExtractorT2 mex

Counts are medians over the build's games: half of them build more, half fewer. The example game is StoicMoose42's (36 OS, 14/09/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine3 Wind to Airfirst at 1:52 · in 79% 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 2:28 · 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

877 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156800
4:0025312150
5:003701197100
6:005032534254
7:0064761096590
8:00807618331031
9:00968328541610
10:001159239942340
11:001382252133090
12:001635261643821
13:001911472004611
14:002195382755717
15:002492992706561
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

StoicMoose42

36.0 OS · 14/09/2026

Open source match ↗

11 received units · includes a constructor
51 metal received · 16708 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=875
Riptide3:52Middle 50%: 3:16–4:34 · n=863
Oppressor5:11Middle 50%: 4:16–6:08 · n=848
Advanced Metal Extractor9:58Middle 50%: 9:16–10:53 · n=743

Played most by

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