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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 · 840 distinct matches · 110 players · 84% of Cortex Beach sea games · team won 55% of 911 · 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 840 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 1:44–2:07

    By 1:40 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 3 steps
    1. Mex ×3
    2. Tidal
    3. ShipyardShipyarddone 1:17 · 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 · 30 steps
    1. Tidal
    2. Construction ShipCon ship
    3. Tidal
    4. Construction ShipCon ship
    5. Windfor Air
    6. HerringMissile corvette
    7. Mex
    8. Windfor Air
    9. SupporterGunboat
    10. Windfor Air
    11. SupporterGunboat ×2
    12. Naval Energy Converter
    13. Mex
    14. Tidal
    15. SupporterGunboat
    16. OppressorDestroyerdone 3:51 · typical 5:11
    17. Naval Energy Converter ×2
    18. Mex ×2
    19. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    20. Death CavalryDeath Cavalry
    21. UrchinUrchin
    22. Mex
    23. Mex
    24. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    25. Construction ShipCon ship
    26. UrchinUrchin
    27. Mex
    28. HerringMissile corvette
    29. JellyfishJellyfish
    30. SupporterGunboat
  3. 3

    5:00 to 10:00

    Economy
    • Metal Extractor1Mex
    • Wind Turbine9Wind
    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 (40%) · 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 · 88 steps
    1. SupporterGunboat ×2
    2. Mex
    3. SupporterGunboatfor Front
    4. SupporterGunboat
    5. Wind
    6. SupporterGunboat
    7. Mex
    8. OrcaSubmarinedone 5:55
    9. Wind
    10. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    11. OrcaSubmarine
    12. Wind
    13. Construction ShipCon ship
    14. Naval Construction Turret
    15. Wind
    16. Con turret
    17. OppressorDestroyer
    18. Wind ×4
    19. Naval Energy Storage
    20. OrcaSubmarine
    21. Wind
    22. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    23. Wind
    24. Tidal
    25. Con turret
    26. OrcaSubmarine
    27. Tidal ×2
    28. RiptideFrigatedone 8:34 · typical 3:51
    29. Tidal
    30. Con turret
    31. RiptideFrigate
    32. Tidal ×2
    33. RiptideFrigate
    34. Bot LabBot Labdone 9:18
    35. Naval Energy Converter ×3
    36. PawnPawn ×2for Front
    37. Naval Energy Converter
    38. PawnPawn ×3for Front
    39. Naval Energy Converter
    40. PawnPawn ×7for Front
    41. Tidal
    42. PawnPawn ×3for Front
    43. Tidal
    44. Naval Metal Storage
    45. PawnPawn ×5for Front
    46. Tidal
    47. PawnPawn ×2for Front
    48. Tidal
    49. PawnPawn ×3for Front
    50. Bot LabBot Labdone 11:03
    51. Tidal
    52. PawnPawn
    53. Advanced Metal ExtractorT2 mexdone 11:16 · typical 9:58
    54. Tidal
    55. Naval Construction Turret
    56. Construction BotCon bot
    57. GruntGrunt
    58. Naval Construction Turret
    59. Advanced ShipyardAdvanced Shipyarddone 12:24
    60. Advanced Metal ExtractorT2 mex
    61. GruntGrunt ×4
    62. Advanced Metal ExtractorT2 mex
    63. GraverobberGraverobber
    64. Naval Construction Turret
    65. Fusion ReactorFusionnot finished by 15:00
    66. GruntGrunt ×7
    67. Advanced Construction SubAdvanced Construction Sub
    68. GruntGrunt ×4
    69. Naval Construction Turret
    70. GruntGrunt ×2
    71. Advanced Metal ExtractorT2 mex
    72. GruntGrunt ×2
    73. PathfinderPathfinder
    74. Radar TowerRadar Tower
    75. ThugThug
    76. PathfinderPathfinder
    77. ThugThug
    78. Naval Construction Turret
    79. GuardGuard
    80. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 14:13
    81. Twin GuardTwin Guard
    82. ThugThug
    83. GuardGuard
    84. OasisOasis
    85. TrasherTrasher ×3
    86. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    87. TrasherTrasher
    88. SlingshotSlingshot ×2

Counts are medians over the build's games: half of them build more, half fewer. The example game is EpicTyrannus's (43 OS, 02/10/2026); 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 2:28 · 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

911 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156900
4:0025342151
5:003708197100
6:005034535255
7:0064761081591
8:00806218211031
9:00967428201581
10:001157039342334
11:001378150203070
12:001631761193806
13:001909971094570
14:002189381835721
15:002490892026551
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

EpicTyrannus

42.6 OS · 02/10/2026

Open source match ↗

6 received units · includes a constructor
520 metal received · 88063 energy received

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

Typical milestones

Shipyard1:57Middle 50%: 1:44–2:07 · n=909
Riptide3:51Middle 50%: 3:15–4:34 · n=894
Oppressor5:11Middle 50%: 4:17–6:08 · n=877
Advanced Metal Extractor9:58Middle 50%: 9:17–10:53 · n=770

Played most by

EpicTyrannus89games of this buildDamsko67games of this buildWaboum64games of this buildPRO_HYDRA60games of this buildKbot_my_Ahole51games of this build