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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 · 813 distinct matches · 108 players · 84% of Cortex Beach sea games · team won 55% of 878 · 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 813 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 1:44–2:08

    By 1:41 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 9 steps
    1. Mexfor Geo
    2. Mex
    3. Windfor Air
    4. Mex
    5. Wind ×2for Air
    6. GuardGuard
    7. Tidalfor Geo
    8. Tidal ×2
    9. ShipyardShipyarddone 2:03 · 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 (43%) · 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 · 31 steps
    1. Tidal
    2. Construction ShipCon shipfor Geo
    3. Tidal
    4. Con turretfor Geo
    5. Tidal
    6. Construction ShipCon ship ×2
    7. RiptideFrigatedone 3:41 · typical 3:52
    8. Tidal
    9. Mex
    10. Tidal
    11. Mex
    12. Mex
    13. Mex
    14. Wind ×2for Geo
    15. Naval Energy Converter
    16. Windfor Geo
    17. RiptideFrigate
    18. Windfor Geo
    19. Naval Construction Turret
    20. Wind
    21. Mexfor Geo
    22. Wind ×3
    23. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    24. RiptideFrigate
    25. Wind
    26. Naval Energy Converter
    27. Wind
    28. BeamerBeamer
    29. Mexfor Geo
    30. SentrySentry
    31. Mexfor Geo
  3. 3

    5:00 to 10:00

    Economy
    • Metal Extractor1Mex
    • Wind Turbine10Wind
    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 (41%) · tidal (38%) · 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 · 50 steps
    1. Wind
    2. OppressorDestroyerdone 6:17 · typical 5:11
    3. Wind
    4. UrchinUrchin
    5. Wind ×4
    6. Mexfor Geo
    7. Con turretfor Geo
    8. HerringMissile corvette
    9. Dragon's MawDragon's Maw
    10. Converter
    11. Dragon's MawDragon's Maw
    12. HerringMissile corvette
    13. Converter
    14. Death CavalryDeath Cavalry
    15. Converter ×3
    16. Naval Construction Turret
    17. Converter
    18. BeamerBeamer
    19. Wind ×2
    20. RiptideFrigate
    21. Wind ×6
    22. RiptideFrigate
    23. Wind ×2
    24. HerringMissile corvette
    25. Construction ShipCon ship
    26. Wind ×2
    27. Construction ShipCon ship
    28. Naval Construction Turret
    29. Bot LabBot Labdone 9:24
    30. Construction ShipCon ship
    31. Naval Construction Turret
    32. SlingshotSlingshot
    33. Construction ShipCon ship ×2
    34. SlingshotSlingshot
    35. Construction ShipCon ship ×2
    36. Naval Construction Turret
    37. SlingshotSlingshot
    38. GruntGrunt
    39. SlingshotSlingshot
    40. Tidal ×13
    41. UrchinUrchin
    42. Tidal
    43. Tidalfor Geo
    44. ShipyardShipyarddone 11:02
    45. CoralCoral
    46. RiptideFrigate ×6
    47. Advanced Metal ExtractorT2 mexfor Geodone 13:11
    48. RiptideFrigate
    49. Mexfor Geo
    50. Advanced Metal ExtractorT2 mexfor Geo

Counts are medians over the build's games: half of them build more, half fewer. The example game is Kbot_my_Ahole's (37 OS, 30/09/2026); 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 2:27 · in 69% 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 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

878 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156800
4:0025322150
5:003702197100
6:005032534253
7:0064761094589
8:00807318301025
9:00968328541608
10:001159239882343
11:001382052163080
12:001635261753814
13:001911472054610
14:002195382905714
15:002492492686556
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

Kbot_my_Ahole

37.3 OS · 30/09/2026

Open source match ↗

6 received units · includes a constructor
674 metal received · 11918 energy received

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

Typical milestones

Shipyard1:57Middle 50%: 1:44–2:08 · n=876
Riptide3:52Middle 50%: 3:16–4:34 · n=864
Oppressor5:11Middle 50%: 4:16–6:08 · n=849
Advanced Metal Extractor9:58Middle 50%: 9:16–10:53 · n=744

Played most by

EpicTyrannus85games of this buildDamsko67games of this buildWaboum64games of this buildPRO_HYDRA60games of this buildMrCoolPotato51games of this build