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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 · 7 steps
    1. Mex ×2
    2. Wind
    3. Mex
    4. Wind ×3
    5. Energy storage
    6. Tidal
    7. ShipyardShipyarddone 1:55 · 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 · 15 steps
    1. Construction ShipCon ship ×2
    2. SupporterGunboat ×2
    3. Naval Construction Turret
    4. SupporterGunboat
    5. Mex
    6. SupporterGunboat ×2
    7. HerringMissile corvette
    8. Mex
    9. OrcaSubmarinedone 4:09
    10. Mex
    11. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    12. Tidal ×3
    13. Naval Energy Storage
    14. Mex
    15. Advanced ShipyardAdvanced Shipyarddone 6:10
  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 · 58 steps
    1. Wind ×2
    2. Advanced Construction SubAdvanced Construction Sub
    3. Wind ×2
    4. BrimstoneAnti-swarm shipnot finished by 15:00
    5. Wind
    6. PathfinderPathfinder
    7. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 7:35
    8. Wind
    9. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    10. BrimstoneAnti-swarm ship
    11. Con turret
    12. BrimstoneAnti-swarm ship
    13. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    14. Tidal
    15. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    16. Tidal
    17. Advanced Metal ExtractorT2 mexdone 9:56 · typical 9:58
    18. Wind
    19. Tidal ×2
    20. Wind
    21. Tidal
    22. BrimstoneAnti-swarm ship
    23. Tidal
    24. Wind
    25. Tidal
    26. Advanced Metal ExtractorT2 mex
    27. Wind
    28. Tidal
    29. Wind
    30. Tidal
    31. Advanced Sonar StationAdvanced Sonar Station
    32. DespotBattleshipdone 12:14
    33. Wind
    34. Tidal
    35. Advanced Metal ExtractorT2 mex
    36. Wind
    37. Tidal ×2
    38. Wind
    39. Tidal ×2
    40. Wind ×2
    41. Tidal
    42. Wind
    43. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    44. Advanced Sonar StationAdvanced Sonar Station
    45. Tidal
    46. Wind
    47. Tidal
    48. Wind
    49. Advanced Metal ExtractorT2 mex
    50. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    51. Wind
    52. Tidal
    53. Wind
    54. BuccaneerCruisernot finished by 15:00
    55. Wind
    56. Naval Construction Turret
    57. Wind ×3
    58. Naval Radar / Sonar TowerNaval Radar / Sonar Tower

Counts are medians over the build's games: half of them build more, half fewer. The example game is Adeus's (36 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

Adeus

35.6 OS · 02/10/2026

Open source match ↗

5 received units · includes a constructor
23 metal received · 56885 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
Standard beach sea · Cortex Beach sea build order · BAR Build Atlas