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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 · 825 distinct matches · 110 players · 84% of Cortex Beach sea games · team won 55% of 893 · 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 825 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 1:40 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 5 steps
    1. Mex ×3
    2. Wind ×2
    3. Wind ×3for Air
    4. Energy storage
    5. 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. Tidal
    2. Construction ShipCon ship ×2
    3. RiptideFrigatedone 2:51 · typical 3:52
    4. Tidal
    5. Mex ×3
    6. RiptideFrigate
    7. Mex
    8. Con turret
    9. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    10. OppressorDestroyerdone 4:39 · typical 5:11
    11. UrchinUrchin
    12. Mex
    13. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    14. Metal storage
    15. Construction ShipCon ship
  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 (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 · 40 steps
    1. Con turret
    2. HerringMissile corvette
    3. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    4. RiptideFrigate
    5. Death CavalryDeath Cavalry
    6. Bot LabBot Labdone 6:28
    7. Construction ShipCon ship
    8. RiptideFrigate
    9. Wind
    10. GruntGrunt
    11. Wind
    12. RiptideFrigate
    13. TrasherTrasher
    14. Wind
    15. OppressorDestroyer
    16. Construction BotCon bot
    17. Wind ×3
    18. HerringMissile corvette
    19. RiptideFrigate
    20. Wind
    21. Advanced Metal ExtractorT2 mexdone 9:55 · typical 9:58
    22. Death CavalryDeath Cavalry
    23. Construction BotCon bot
    24. Wind
    25. Mex
    26. UrchinUrchin
    27. Wind
    28. Construction ShipCon ship
    29. Mex
    30. Wind
    31. RiptideFrigate
    32. SupporterGunboat ×2
    33. RiptideFrigate
    34. BeamerBeamer
    35. Advanced Metal ExtractorT2 mex
    36. OppressorDestroyer
    37. Construction ShipCon ship
    38. Con turret
    39. Wind
    40. Death CavalryDeath Cavalry

Counts are medians over the build's games: half of them build more, half fewer. The example game is Graceful's (38 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 61% 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

893 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00156900
4:0025322150
5:003703197100
6:005029538254
7:0064741091590
8:00805618261031
9:00967328311605
10:001157039442340
11:001378151713070
12:001631761563806
13:001908271534609
14:002186582105711
15:002489892026531
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

Graceful

37.8 OS · 02/10/2026

Open source match ↗

5 received units · includes a constructor
112 metal received · 18509 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=891
Riptide3:52Middle 50%: 3:15–4:34 · n=878
Oppressor5:11Middle 50%: 4:17–6:08 · n=861
Advanced Metal Extractor9:58Middle 50%: 9:17–10:53 · n=755

Played most by

EpicTyrannus86games of this buildDamsko67games of this buildWaboum64games of this buildPRO_HYDRA60games of this buildMrCoolPotato51games of this build