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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 · 3 steps
    1. Mex ×3
    2. Tidal
    3. ShipyardShipyarddone 1:18 · 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 · 22 steps
    1. Tidal
    2. Construction ShipCon ship
    3. Wind ×3for Air
    4. Tidal
    5. SupporterGunboat
    6. Tidal
    7. SupporterGunboat
    8. Mex
    9. SupporterGunboat ×2
    10. Mex
    11. SupporterGunboat
    12. Mex
    13. HerringMissile corvette ×2
    14. Construction ShipCon ship
    15. Mex
    16. HerringMissile corvette
    17. Tidal
    18. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    19. SupporterGunboat ×2
    20. Death CavalryDeath Cavalry
    21. GuardGuard ×2
    22. Mex
  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 · 65 steps
    1. GuardGuard
    2. HerringMissile corvette
    3. Radar TowerRadar Tower
    4. HerringMissile corvette
    5. Tidal
    6. Bot LabBot Labdone 5:50
    7. Tidal
    8. Mex
    9. ThugThug ×2
    10. Tidal
    11. OrcaSubmarinedone 6:39
    12. ThugThug ×2
    13. Naval Construction Turret
    14. Wind
    15. ThugThug
    16. CyclopsCyclops
    17. Tidal
    18. ThugThug
    19. Tidal
    20. UrchinUrchin
    21. Tidal
    22. GuardGuard
    23. Radar TowerRadar Tower
    24. Tidal
    25. Mex
    26. Bot LabBot Labdone 8:07
    27. Tidal
    28. Construction BotCon bot
    29. Tidal
    30. ThugThug
    31. Naval Construction Turret
    32. UrchinUrchin
    33. ThugThug
    34. Tidal ×2
    35. ThugThug
    36. Death CavalryDeath Cavalry
    37. Naval Construction Turret
    38. Tidal
    39. ThugThug
    40. Tidal
    41. UrchinUrchin
    42. Naval Energy Storage
    43. ThugThug
    44. Naval Construction Turret
    45. ThugThug ×2
    46. Shark's TeethShark's Teeth ×2
    47. Construction ShipCon ship
    48. Shark's TeethShark's Teeth
    49. ThugThug
    50. Shark's TeethShark's Teeth ×4
    51. ThugThug
    52. Shark's TeethShark's Teeth
    53. ThugThug
    54. Shark's TeethShark's Teeth ×2
    55. ThugThug
    56. Shark's TeethShark's Teeth ×2
    57. ThugThug
    58. Shark's TeethShark's Teeth ×2
    59. ThugThug
    60. Shark's TeethShark's Teeth
    61. Construction ShipCon ship
    62. Shark's TeethShark's Teeth
    63. ThugThug
    64. Shark's TeethShark's Teeth
    65. ThugThug

Counts are medians over the build's games: half of them build more, half fewer. The example game is EpicTyrannus's (42 OS, 01/10/2026); 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

EpicTyrannus

42.1 OS · 01/10/2026

Open source match ↗

3 received units · includes a constructor
133 metal received · 45317 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