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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 (93%)

#naval #eco · 1566 distinct matches · 206 players · 84% of Cortex Beach sea games · team won 55% of 1770 · Recently observed

HOW TO PLAY IT

Key timing: Shipyard by 1:56

  1. Open 3 mex, then send com to sea to build Shipyard by 1:56.
  2. Add tidal generators, wind and more mex to fund the shipyard.
  3. Pump Riptide first, then Oppressor to contest enemy sea entry.
  4. Get T2 constructor out to start scaling the naval economy.
  5. Transition into Advanced Metal Extractor as the economy phase begins.

Phase by phase

TYPICAL OF ITS 1566 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 ~1:56, middle half 1:43–2:07

    By 1:39 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 7 steps
    1. Mex ×3
    2. Wind
    3. Wind ×3for Air
    4. Wind
    5. Energy storage
    6. Wind
    7. ShipyardShipyarddone 2:09 · typical 1:56
  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 (46%) · mex (38%) · wind (37%) · submarine (36%) · wind (36%)

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

    The example game in this phase · 14 steps
    1. Construction ShipCon ship
    2. Con turret
    3. Construction ShipCon ship
    4. OppressorDestroyerdone 4:54 · typical 5:14
    5. Mex ×4
    6. Wind
    7. Mex
    8. Wind ×2
    9. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    10. Wind ×5
    11. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    12. Wind
    13. HerringMissile corvette
    14. Wind
  3. 3

    5:00 to 10:00

    Economy
    • Metal Extractor1Mex
    • Wind Turbine8Wind
    Builders
    • Construction Ship1 Con ship
    • Death Cavalry1 Death Cavalry
    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 (49%) · Guard (46%) · Radar Tower (39%) · tidal (39%) · wind (34%)

    By 10:00 in all: 9 mex · 10 wind · 4 wind · 4 tidal · 1 energy storage · 1 Naval Construction Turret

    The example game in this phase · 77 steps
    1. Wind
    2. RiptideFrigatedone 5:23 · typical 3:50
    3. Mex
    4. Wind ×3
    5. Mex
    6. RiptideFrigate
    7. Wind
    8. GuardGuard
    9. Wind
    10. RiptideFrigate
    11. Wind
    12. GuardGuard
    13. Wind
    14. GuardGuard
    15. Wind
    16. RiptideFrigate
    17. Wind
    18. GuardGuard
    19. Wind
    20. Radar TowerRadar Tower
    21. UrchinUrchin
    22. Wind
    23. GuardGuard
    24. Wind ×6
    25. OppressorDestroyer
    26. Wind ×2
    27. GuardGuard
    28. OppressorDestroyer
    29. GuardGuard
    30. Wind ×2
    31. GuardGuard
    32. Wind
    33. GuardGuard
    34. Wind
    35. Naval Construction Turret
    36. RiptideFrigate
    37. Wind
    38. GuardGuard
    39. Wind
    40. Radar TowerRadar Tower
    41. Wind
    42. Mex
    43. Wind
    44. Energy storage
    45. RiptideFrigate
    46. Death CavalryDeath Cavalry
    47. Advanced Metal ExtractorT2 mexdone 9:39 · typical 9:58
    48. Wind
    49. BeamerBeamer
    50. RiptideFrigate
    51. ShipyardEat Shipyardreclaimed for its metal
    52. SentrySentry
    53. Advanced Metal ExtractorT2 mex
    54. Naval Construction Turret
    55. Advanced ShipyardAdvanced Shipyardnot finished by 15:00
    56. Advanced Metal ExtractorT2 mex
    57. Advanced ShipyardEat Advanced Shipyardreclaimed for its metal
    58. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    59. ShipyardShipyarddone 11:11
    60. OrcaSubmarinedone 11:22
    61. Advanced Metal ExtractorT2 mex
    62. OrcaSubmarine ×3
    63. Advanced ShipyardAdvanced Shipyarddone 13:08
    64. Fusion ReactorFusiondone 14:43
    65. ShipyardEat Shipyardreclaimed for its metal
    66. Advanced Construction SubAdvanced Construction Sub
    67. PathfinderPathfinder
    68. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    69. PathfinderPathfinder
    70. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 14:20
    71. PathfinderPathfinder
    72. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    73. PathfinderPathfinder ×2
    74. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    75. Converter
    76. DespotBattleshipnot finished by 15:00
    77. T2 converter

Counts are medians over the build's games: half of them build more, half fewer. The example game is ObeIix's (31 OS, 02/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine3 Wind to Airfirst at 1:46 · in 77% of games

You get

  • Finch1 Finch from Airfirst at 2:00 · in 80% of games
  • Lazarus1 Lazarus from Geofirst at 2:13 · in 63% of games
  • Hephaestus1 Heavy transport from Airfirst at 2:16 · in 65% of games
  • Construction Bot1 Con bot from Geofirst at 2:26 · in 70% of games
  • Hercules1 Light transport from Airfirst at 2:34 · in 32% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 8:08 · in 89% 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

1770 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00155300
4:002540051
5:003717176102
6:005047483281
7:006489972599
8:00807216681010
9:00968326081541
10:001154037252338
11:001368547653112
12:001625058753909
13:001894668794651
14:002167779295701
15:002459888436523
WHAT THE NUMBERS SAY

Standard Beach sea play has the lowest team win rate of these builds and destroys far less enemy metal early than it loses eco time.

  • + Metal produced climbs to 24945 by 15:00, the highest of all six roles.
  • + Riptide and Oppressor together make 63% of army, a focused naval composition.
  • − Enemy metal destroyed is only 200 by 5:00, barely contesting early sea.
  • − T2 factory only reached in 35% of games, behind other roles' T2 timing.
THE EXAMPLE YOU ARE READING

ObeIix

30.8 OS · 02/10/2026

Open source match ↗

10 received units · includes a constructor
49 metal received · 16055 energy received

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

Typical milestones

Shipyard1:56Middle 50%: 1:43–2:07 · n=1767
Riptide3:50Middle 50%: 3:12–4:34 · n=1724
Oppressor5:14Middle 50%: 4:28–6:06 · n=1706
Advanced Metal Extractor9:58Middle 50%: 9:17–10:55 · n=1496

Played most by

EpicTyrannus120games of this buildDamsko69games of this buildKbot_my_Ahole67games of this buildWaboum64games of this buildPRO_HYDRA63games of this build