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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 · 16 steps
    1. Mex ×3
    2. Wind
    3. Windfor Air
    4. Wind
    5. Windfor Air
    6. Bot LabBot Labdone 1:12
    7. Wind
    8. GraverobberGraverobber
    9. Construction BotCon bot
    10. Wind ×2
    11. GraverobberGraverobber
    12. Construction BotCon bot ×2
    13. Energy storage
    14. Mex
    15. Wind
    16. ShipyardShipyarddone 2:55 · 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 · 25 steps
    1. Wind
    2. Construction ShipCon ship
    3. Wind
    4. Construction ShipCon ship
    5. OrcaSubmarinedone 3:33
    6. Mex ×2
    7. Wind
    8. RiptideFrigatedone 3:51 · typical 3:51
    9. Naval Energy Converter
    10. Mex ×2
    11. Death CavalryDeath Cavalry
    12. Converter
    13. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    14. HerringMissile corvette
    15. Radar TowerRadar Tower
    16. Wind
    17. SupporterGunboat
    18. Mex
    19. SupporterGunboat
    20. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    21. SupporterGunboat
    22. UrchinUrchin
    23. SupporterGunboat
    24. Twin GuardTwin Guard
    25. 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 · 96 steps
    1. RiptideFrigate
    2. Wind
    3. SupporterGunboat ×2
    4. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    5. SupporterGunboat ×3
    6. Wind
    7. OrcaSubmarine
    8. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    9. Wind
    10. Twin GuardTwin Guard
    11. RiptideFrigate
    12. Death CavalryDeath Cavalry
    13. Mex
    14. Converter
    15. HerringMissile corvette
    16. SupporterGunboat ×3
    17. Wind
    18. SupporterGunboat
    19. Twin GuardTwin Guard
    20. SupporterGunboat
    21. RiptideFrigate
    22. Wind
    23. SupporterGunboat ×2
    24. Mex
    25. Wind
    26. SupporterGunboat ×2
    27. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    28. SupporterGunboat
    29. UrchinUrchin
    30. OrcaSubmarine
    31. Wind
    32. UrchinUrchin
    33. Wind
    34. RiptideFrigate
    35. Converter
    36. Mex
    37. Death CavalryDeath Cavalry
    38. Wind
    39. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    40. Advanced Metal ExtractorT2 mexdone 10:37 · typical 9:58
    41. UrchinUrchin
    42. Wind
    43. HerringMissile corvette
    44. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    45. SupporterGunboat
    46. Wind
    47. SupporterGunboat ×2
    48. Wind
    49. SupporterGunboat
    50. Wind
    51. SupporterGunboat
    52. RiptideFrigate
    53. Wind
    54. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    55. Converter
    56. SupporterGunboat ×3
    57. Wind
    58. RiptideFrigate
    59. Naval Construction Turret
    60. Advanced Metal ExtractorT2 mex
    61. Converter
    62. Wind
    63. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    64. Wind
    65. Naval Construction Turret
    66. Wind
    67. Naval Metal Storage
    68. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    69. Wind
    70. Advanced ShipyardAdvanced Shipyarddone 12:21
    71. Wind ×2
    72. Advanced Metal ExtractorT2 mex
    73. Wind
    74. Converter
    75. Death CavalryDeath Cavalry
    76. Advanced Construction SubAdvanced Construction Sub
    77. Wind
    78. Death CavalryDeath Cavalry
    79. Wind
    80. Converter
    81. PathfinderPathfinder ×2
    82. Wind
    83. DespotBattleshipdone 14:00
    84. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 14:01
    85. Wind ×2
    86. Advanced Metal ExtractorT2 mex
    87. Wind ×2
    88. PhantasmRadar jammer ship
    89. Death CavalryDeath Cavalry
    90. Wind
    91. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    92. Converter
    93. BuccaneerCruiserdone 14:44
    94. Wind
    95. BuccaneerCruiser
    96. 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 Optimusprimenutt's (41 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

Optimusprimenutt

40.7 OS · 02/10/2026

Open source match ↗

3 received units · includes a constructor
5989 metal received · 98809 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