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Beach sea / Cortex / Economy first / OBSERVED BUILD

Standard beach sea

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 · 729 distinct matches · 102 players · 84% of Cortex Beach sea games · team won 55% of 789 · 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 729 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 · 2 steps
    1. Mex ×3
    2. ShipyardShipyarddone 1:09 · typical 1:57
  2. 2

    Shipyard to 5:00

    Economy
    • Metal Extractor5Mex
    • Tidal Generator1Tidal
    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 (42%) · wind (41%) · submarine (40%) · con turret (35%) · gunboat (34%)

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

    The example game in this phase · 19 steps
    1. Construction ShipCon ship
    2. Tidal ×3
    3. Wind ×3for Air
    4. HerringMissile corvette
    5. RiptideFrigatedone 2:29 · typical 3:51
    6. Mex
    7. Wind
    8. OrcaSubmarinedone 3:03
    9. Mex
    10. Mex
    11. RiptideFrigate
    12. Mex
    13. RiptideFrigate
    14. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    15. Wind
    16. Construction ShipCon ship
    17. Wind
    18. Death CavalryDeath Cavalry
    19. Con turret
  3. 3

    5:00 to 10:00

    Economy
    • Metal Extractor1Mex
    • Wind Turbine10Wind
    Builders
    • Death Cavalry1 Death Cavalry
    • Construction Ship1 Con ship
    Army
    • Riptide5 Frigate
    • Oppressor2 Destroyer
    • Herring2 Missile corvette
    Other
    • Naval Radar / Sonar Tower1 Naval Radar / Sonar Tower

    Some games also: Urchin (50%) · Naval Construction Turret (47%) · Guard (47%) · Radar Tower (41%) · tidal (38%)

    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 · 76 steps
    1. RiptideFrigate
    2. OppressorDestroyerdone 6:17 · typical 5:09
    3. Wind ×4
    4. BeholderBeholder
    5. Wind ×2
    6. HerringMissile corvette
    7. Con turret
    8. RiptideFrigate
    9. Wind ×2
    10. Advanced Metal ExtractorT2 mexdone 7:35 · typical 9:57
    11. Tidal
    12. OppressorDestroyer
    13. RiptideFrigate
    14. Energy storage
    15. HerringMissile corvette
    16. Energy storage
    17. Advanced Metal ExtractorT2 mex
    18. Construction ShipCon ship
    19. Advanced Metal ExtractorT2 mex
    20. Death CavalryDeath Cavalry
    21. OppressorDestroyer
    22. Naval Construction Turret
    23. RiptideFrigate
    24. Advanced Metal ExtractorT2 mex
    25. Naval Construction Turret
    26. RiptideFrigate
    27. UrchinUrchin
    28. RiptideFrigate
    29. UrchinUrchin
    30. OppressorDestroyer
    31. Wind ×6
    32. Death CavalryDeath Cavalry
    33. Wind
    34. Mex
    35. Naval Construction Turret
    36. Bot LabBot Labdone 12:09
    37. OppressorDestroyer
    38. UrchinUrchin
    39. Naval Construction Turret
    40. Construction BotCon bot
    41. UrchinUrchin
    42. Construction BotCon bot
    43. Death CavalryDeath Cavalry
    44. Naval Construction Turret
    45. Metal storage
    46. Construction BotCon bot
    47. Naval Construction Turret
    48. Naval Metal Storage
    49. Construction BotCon bot
    50. Fusion ReactorFusionnot finished by 15:00
    51. OppressorDestroyer
    52. Construction BotCon bot
    53. Energy storage
    54. Death CavalryDeath Cavalry
    55. Construction BotCon bot
    56. Death CavalryDeath Cavalry
    57. Wind
    58. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    59. RiptideFrigate
    60. Construction BotCon bot
    61. RiptideFrigate
    62. Wind
    63. RiptideFrigate
    64. HerringMissile corvette
    65. Wind
    66. HerringMissile corvette
    67. RiptideFrigate
    68. Construction BotCon bot
    69. Mex
    70. RiptideFrigate ×2
    71. Wind
    72. Construction BotCon bot
    73. Death CavalryDeath Cavalry
    74. RiptideFrigate
    75. Wind ×2
    76. Construction BotCon bot

Counts are medians over the build's games: half of them build more, half fewer. The example game is MrCoolPotato's (41 OS, 04/09/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine3 Wind to Airfirst at 1:54 · in 79% of games

You get

  • Finch1 Finch from Airfirst at 1:58 · in 81% 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 2:29 · in 69% of games
  • Hercules1 Light transport from Airfirst at 2:35 · in 31% 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

789 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156300
4:002522050
5:003699194100
6:005026532250
7:0064731100588
8:00808018571041
9:00968328851621
10:001160240232345
11:001382252273090
12:001635262003851
13:001911172574621
14:002186583045721
15:002487692656531
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

MrCoolPotato

41.3 OS · 04/09/2026

Open source match ↗

5 received units · includes a constructor
852 metal received · 60653 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=787
Riptide3:51Middle 50%: 3:15–4:31 · n=782
Oppressor5:09Middle 50%: 4:11–6:07 · n=764
Advanced Metal Extractor9:57Middle 50%: 9:15–10:53 · n=667

Played most by

EpicTyrannus68games of this buildDamsko64games of this buildWaboum64games of this buildPRO_HYDRA54games of this buildMrCoolPotato51games of this build