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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 · 1552 distinct matches · 206 players · 84% of Cortex Beach sea games · team won 55% of 1756 · 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 1552 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 · 8 steps
    1. Mex ×3
    2. Wind ×2
    3. Wind ×3for Air
    4. Wind
    5. Energy storage
    6. GuardGuard
    7. Wind
    8. ShipyardShipyarddone 2:18 · 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 · 19 steps
    1. Construction ShipCon ship
    2. Wind
    3. Construction ShipCon ship
    4. Wind
    5. RiptideFrigatedone 2:51 · typical 3:50
    6. Mex
    7. Mex
    8. RiptideFrigate
    9. Mex
    10. Wind
    11. Converter
    12. Mex
    13. RiptideFrigate
    14. Con turret
    15. Mex
    16. Wind
    17. OppressorDestroyerdone 5:04 · typical 5:15
    18. UrchinUrchin
    19. Wind ×2
  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%) · tidal (40%) · Radar Tower (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 · 68 steps
    1. Death CavalryDeath Cavalry
    2. Wind
    3. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    4. HerringMissile corvette
    5. Wind
    6. RiptideFrigate ×2
    7. Wind
    8. RiptideFrigate
    9. Wind
    10. UrchinUrchin
    11. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    12. OppressorDestroyer
    13. Wind ×2
    14. Death CavalryDeath Cavalry
    15. Wind
    16. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    17. Wind
    18. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    19. HerringMissile corvette
    20. Wind
    21. RiptideFrigate
    22. Wind ×2
    23. RiptideFrigate
    24. Wind
    25. RiptideFrigate
    26. Wind ×2
    27. RiptideFrigate ×4
    28. Death CavalryDeath Cavalry
    29. RiptideFrigate
    30. Advanced Metal ExtractorT2 mexdone 10:56 · typical 9:59
    31. OppressorDestroyer
    32. Death CavalryDeath Cavalry
    33. HerringMissile corvette
    34. Naval Construction Turret ×2
    35. RiptideFrigate
    36. Metal storage
    37. Naval Construction Turret
    38. Advanced Metal ExtractorT2 mex
    39. Tidal ×8
    40. Naval Construction Turret
    41. Tidal ×2
    42. Advanced Metal ExtractorT2 mex
    43. ShipyardEat Shipyardreclaimed for its metal
    44. Tidal ×7
    45. Advanced ShipyardAdvanced Shipyarddone 12:52
    46. Tidal ×2
    47. Advanced Construction SubAdvanced Construction Sub
    48. Tidal ×3
    49. Advanced Construction SubAdvanced Construction Sub
    50. Tidal ×2
    51. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 14:05
    52. Tidal
    53. Advanced Metal ExtractorT2 mex
    54. Tidal
    55. Black HydraBlack Hydranot finished by 15:00
    56. Tidal ×3
    57. Amphibious ComplexAmphibious Complexdone 14:24
    58. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    59. Tidal
    60. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    61. Tidal
    62. Converter
    63. OasisOasis
    64. GarpikeGarpike
    65. SalamanderSalamander
    66. Tidal
    67. Converter
    68. Tidal

Counts are medians over the build's games: half of them build more, half fewer. The example game is xXGRM_RenXx'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 2:15 · 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 8:09 · 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

1756 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00155300
4:002539051
5:003717176103
6:005044484281
7:006488974599
8:00806916701013
9:00968326041541
10:001153737182343
11:001368547653112
12:001625058753910
13:001895468794652
14:002167279375711
15:002457688436529
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

xXGRM_RenXx

30.8 OS · 02/10/2026

Open source match ↗

7 received units · includes a constructor
37 metal received · 30981 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=1753
Riptide3:50Middle 50%: 3:12–4:34 · n=1710
Oppressor5:15Middle 50%: 4:28–6:07 · n=1692
Advanced Metal Extractor9:59Middle 50%: 9:17–10:55 · n=1485

Played most by

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