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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 · 871 distinct matches · 111 players · 83% of Cortex Beach sea games · team won 54% of 943 · 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 871 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 Turbine2Windfor allies
    • Wind Turbine2Wind
    • Energy Storage1Energy storage
    Order
    1. ShipyardShipyard after 3 mex, 2 wind, 1 energy storagedone ~1:57, middle half 1:43–2:07

    By 1:40 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 16 steps
    1. Mex ×3
    2. Wind ×5
    3. Hovercraft PlatformHovercraft Platformdone 1:27
    4. Wind
    5. Construction HovercraftCon hovercraft
    6. Windfor Air
    7. Construction HovercraftCon hovercraft
    8. Wind
    9. Windfor Air
    10. Mex
    11. GoonGoon
    12. Construction HovercraftCon hovercraft
    13. Wind
    14. GoonGoon
    15. Mex
    16. ShipyardShipyarddone 3:10 · 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 (45%) · submarine (39%) · wind (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 · 7 steps
    1. RiptideFrigatedone 3:49 · typical 3:51
    2. UrchinUrchin
    3. Mex ×2
    4. Construction ShipCon ship
    5. Mex
    6. RiptideFrigate
    7. OrcaSubmarinedone 5:06
  3. 3

    5:00 to 10:00

    Economy
    • Metal Extractor1Mex
    • Wind Turbine9Wind
    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 (48%) · Guard (47%) · Radar Tower (40%) · 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 · 58 steps
    1. HerringMissile corvette
    2. Construction ShipCon ship
    3. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    4. Construction ShipCon ship
    5. Tidal
    6. HerringMissile corvette
    7. Tidal
    8. GuardGuard
    9. Tidal
    10. OppressorDestroyerdone 6:43 · typical 5:11
    11. Tidal
    12. JellyfishJellyfish
    13. RiptideFrigate ×2
    14. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    15. RiptideFrigate
    16. Mex
    17. UrchinUrchin
    18. OppressorDestroyer
    19. Naval Energy Converter
    20. UrchinUrchin
    21. Mex
    22. Naval Energy Converter
    23. HerringMissile corvettefor Pond
    24. HerringMissile corvette
    25. UrchinUrchin
    26. HerringMissile corvette
    27. Construction ShipCon ship ×3
    28. Mex
    29. Advanced Metal ExtractorT2 mexdone 11:07 · typical 9:58
    30. Advanced ShipyardAdvanced Shipyarddone 10:50
    31. Advanced Construction SubAdvanced Construction Sub
    32. Tidal
    33. Advanced Metal ExtractorT2 mex
    34. Tidal
    35. PathfinderPathfinder
    36. Tidal ×2
    37. PathfinderPathfinder
    38. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 12:47
    39. Tidal ×2
    40. UrchinUrchin
    41. PathfinderPathfinder
    42. Tidal ×2
    43. Advanced Metal ExtractorT2 mex
    44. Tidal
    45. PhantasmRadar jammer ship
    46. Tidal ×2
    47. JellyfishJellyfish
    48. Tidal
    49. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    50. Tidal
    51. DespotBattleshipdone 14:57
    52. Tidal ×2
    53. Advanced Metal ExtractorT2 mex
    54. Tidal ×3
    55. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    56. Tidal ×4
    57. Death CavalryDeath Cavalry
    58. Tidal

Counts are medians over the build's games: half of them build more, half fewer. The example game is [Grump]_Doni's (52 OS, 03/10/2026); 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 1:59 · 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 2:35 · in 32% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 8:10 · 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

943 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00157000
4:002537051
5:003709197100
6:005035533261
7:0064751080591
8:00803818141031
9:00966427901581
10:001155639232340
11:001375250003070
12:001628061193825
13:001906771064611
14:002181181625667
15:002487692576531
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

[Grump]_Doni

51.7 OS · 03/10/2026

Open source match ↗

5 received units · includes a constructor
0 metal received · 8330 energy received

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

Typical milestones

Shipyard1:57Middle 50%: 1:43–2:07 · n=941
Riptide3:51Middle 50%: 3:15–4:34 · n=925
Oppressor5:11Middle 50%: 4:18–6:08 · n=907
Advanced Metal Extractor9:58Middle 50%: 9:17–10:55 · n=797

Played most by

EpicTyrannus94games of this buildDamsko68games of this buildWaboum64games of this buildPRO_HYDRA61games of this buildKbot_my_Ahole52games of this build