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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 · 806 distinct matches · 107 players · 84% of Cortex Beach sea games · team won 55% of 871 · 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 806 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 1:45–2:08

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

    The example game in this phase · 9 steps
    1. Mex ×2
    2. Windfor Air
    3. Mex
    4. Wind ×2for Air
    5. GuardGuard
    6. Wind
    7. Energy storage
    8. Tidal
    9. ShipyardShipyarddone 2:10 · 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 · 18 steps
    1. Construction BotCon bot
    2. Construction ShipCon ship ×2
    3. HerringMissile corvette ×2
    4. RiptideFrigatedone 3:46 · typical 3:52
    5. Mex
    6. Con turret
    7. Mex
    8. GuardGuard
    9. Mex
    10. RiptideFrigate
    11. Mex
    12. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    13. Converter ×2
    14. Mex
    15. RiptideFrigate
    16. Wind ×2
    17. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    18. UrchinUrchin
  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 · 71 steps
    1. OppressorDestroyerdone 6:07 · typical 5:11
    2. Wind
    3. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    4. Wind ×2
    5. Death CavalryDeath Cavalry
    6. Wind
    7. Mex ×3
    8. Wind ×2
    9. Death CavalryDeath Cavalry
    10. Mex
    11. Wind
    12. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    13. Construction ShipCon ship
    14. Wind ×3
    15. Construction ShipCon ship
    16. Wind
    17. BeholderBeholder
    18. Naval Construction Turret ×2
    19. Tidal
    20. BeholderBeholder
    21. Wind
    22. Tidal ×2
    23. BeholderBeholder
    24. Tidal ×2
    25. Radar TowerRadar Tower
    26. Tidal
    27. Death CavalryDeath Cavalry
    28. Wind
    29. Tidal
    30. Advanced Metal ExtractorT2 mexdone 9:00 · typical 9:57
    31. Tidal ×10
    32. Radar TowerRadar Tower
    33. Tidal ×5
    34. BeholderBeholder
    35. Wind
    36. Tidal
    37. Wind
    38. Tidal
    39. BeholderBeholder
    40. Wind
    41. Advanced Metal ExtractorT2 mex
    42. Tidal ×2
    43. Wind
    44. BeholderBeholder
    45. Tidal ×2
    46. Converter
    47. Tidal ×2
    48. Naval Construction Turret
    49. Converter
    50. Tidal
    51. Advanced ShipyardAdvanced Shipyarddone 10:44
    52. Tidal
    53. Construction ShipCon ship
    54. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    55. Converter ×2
    56. Tidal ×2
    57. Converter
    58. Advanced Metal ExtractorT2 mex
    59. Tidal ×2
    60. Converter ×2
    61. Tidal
    62. Converter ×2
    63. Advanced Construction SubAdvanced Construction Sub
    64. Converter ×2
    65. PathfinderPathfinder
    66. Converter
    67. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 11:35
    68. PathfinderPathfinder
    69. Advanced Metal ExtractorT2 mex
    70. Naval Construction Turret ×2
    71. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor

Counts are medians over the build's games: half of them build more, half fewer. The example game is [MooDeng]NongJohn's (41 OS, 30/09/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine3 Wind to Airfirst at 1:53 · in 79% of games

You get

  • Finch1 Finch from Airfirst at 1:58 · in 83% of games
  • Lazarus1 Lazarus from Geofirst at 2:14 · 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

871 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156800
4:0025282150
5:003701197100
6:005032535251
7:0064751096588
8:00807018261019
9:00968228541610
10:001159139942334
11:001381852133090
12:001635661643821
13:001917072004611
14:002196183045717
15:002495292706561
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

[MooDeng]NongJohn

40.5 OS · 30/09/2026

Open source match ↗

6 received units · includes a constructor
111 metal received · 22989 energy received

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

Typical milestones

Shipyard1:57Middle 50%: 1:45–2:08 · n=869
Riptide3:52Middle 50%: 3:16–4:34 · n=857
Oppressor5:11Middle 50%: 4:15–6:08 · n=842
Advanced Metal Extractor9:57Middle 50%: 9:16–10:53 · n=739

Played most by

EpicTyrannus85games of this buildDamsko66games of this buildWaboum64games of this buildPRO_HYDRA60games of this buildMrCoolPotato51games of this build