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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 · 22 steps
    1. Mex ×2
    2. Solar
    3. Wind ×2
    4. Bot LabBot Labdone 0:56
    5. Construction BotCon bot
    6. GraverobberGraverobber
    7. Mex
    8. Construction BotCon bot ×2
    9. Wind
    10. Mex
    11. Construction BotCon bot
    12. Wind
    13. Construction BotCon bot
    14. Wind
    15. Construction BotCon bot
    16. Wind
    17. GruntGrunt
    18. Mex
    19. Wind
    20. TrasherTrasher
    21. Wind ×2
    22. ShipyardShipyarddone 3:30 · 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 · 14 steps
    1. Wind ×2
    2. Converter
    3. Mex
    4. HerringMissile corvette
    5. Wind
    6. RiptideFrigatedone 3:52 · typical 3:52
    7. Wind
    8. RiptideFrigate
    9. Wind
    10. RiptideFrigate
    11. Energy storage
    12. Mex
    13. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    14. RiptideFrigate
  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 · 77 steps
    1. RiptideFrigate
    2. Death CavalryDeath Cavalry
    3. Converter
    4. RiptideFrigate
    5. OrcaSubmarinedone 6:24
    6. Mex
    7. OrcaSubmarine
    8. Converter ×2
    9. Wind
    10. Mex
    11. Construction ShipCon ship
    12. Wind
    13. UrchinUrchin
    14. Wind
    15. Construction ShipCon ship
    16. Wind
    17. OppressorDestroyerdone 8:25 · typical 5:11
    18. Wind
    19. Naval Construction Turret
    20. Wind ×3
    21. OppressorDestroyer
    22. Wind
    23. RiptideFrigate
    24. Wind
    25. RiptideFrigate
    26. Wind ×2
    27. RiptideFrigate
    28. Wind
    29. RiptideFrigate
    30. Wind ×2
    31. RiptideFrigate
    32. Con turret
    33. Advanced Metal ExtractorT2 mexdone 10:17 · typical 9:58
    34. Wind
    35. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    36. RiptideFrigate
    37. Advanced Metal ExtractorT2 mex
    38. RiptideFrigate
    39. UrchinUrchin
    40. RiptideFrigate
    41. Advanced Metal ExtractorT2 mex
    42. RiptideFrigate ×5
    43. Wind
    44. Death CavalryDeath Cavalry
    45. Advanced Metal ExtractorT2 mex
    46. Wind ×2
    47. Death CavalryDeath Cavalry
    48. Wind ×2
    49. Construction ShipCon ship
    50. Wind
    51. Construction ShipCon ship
    52. Wind
    53. OppressorDestroyer
    54. Wind ×2
    55. Tidal
    56. Construction ShipCon ship
    57. Wind
    58. Tidal
    59. RiptideFrigate
    60. Wind
    61. Tidal
    62. Wind
    63. Advanced ShipyardAdvanced Shipyarddone 14:06
    64. RiptideFrigate
    65. Tidal
    66. Wind
    67. Tidal
    68. RiptideFrigate
    69. Tidal
    70. RiptideFrigate
    71. Advanced Construction SubAdvanced Construction Sub
    72. RiptideFrigate
    73. BrimstoneAnti-swarm shipdone 14:43
    74. RiptideFrigate
    75. BrimstoneAnti-swarm ship
    76. Naval Advanced Metal ExtractorNaval Advanced Metal Extractornot finished by 15:00
    77. Con turret

Counts are medians over the build's games: half of them build more, half fewer. The example game is BeanBro's (46 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 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

BeanBro

46.0 OS · 08/09/2026

Open source match ↗

1 received units · includes a constructor
1918 metal received · 25087 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