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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 (93%)

#naval #eco · 1589 distinct matches · 207 players · 84% of Cortex Beach sea games · team won 55% of 1793 · Recently observed

HOW TO PLAY IT

Key timing: Shipyard by 1:56

  1. Open 3 mex, then send com to sea to build Shipyard by 1:56.
  2. Add tidal generators, wind and more mex to fund the shipyard.
  3. Pump Riptide first, then Oppressor to contest enemy sea entry.
  4. Get T2 constructor out to start scaling the naval economy.
  5. Transition into Advanced Metal Extractor as the economy phase begins.

Phase by phase

TYPICAL OF ITS 1589 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 ~1:56, middle half 1:43–2:07

    Some games also: Guard (30%)

    By 1:39 in all: 3 mex · 2 wind · 1 energy storage

    The example game in this phase · 6 steps
    1. Mex ×2
    2. Windfor Air
    3. Mex
    4. Windfor Air
    5. Tidal
    6. ShipyardShipyarddone 1:29 · typical 1:56
  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 (46%) · mex (38%) · wind (37%) · submarine (36%) · wind (36%)

    By 5:00 in all: 8 mex · 3 wind · 2 tidal · 1 energy storage

    The example game in this phase · 23 steps
    1. Tidal
    2. HerringMissile corvette
    3. Tidal
    4. SupporterGunboat ×2
    5. Windfor Air
    6. Construction ShipCon ship
    7. Tidal
    8. Construction ShipCon ship
    9. Mex
    10. RiptideFrigatedone 3:03 · typical 3:50
    11. Mex ×3
    12. OppressorDestroyerdone 4:14 · typical 5:15
    13. Con turret
    14. Mex
    15. Naval Energy Converter
    16. RiptideFrigate
    17. HerringMissile corvette
    18. Mex
    19. JellyfishJellyfish
    20. Mex
    21. Wind
    22. HerringMissile corvette
    23. GuardGuard
  3. 3

    5:00 to 10:00

    Economy
    • Metal Extractor1Mex
    • Wind Turbine8Wind
    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 (49%) · Guard (47%) · tidal (39%) · Radar Tower (39%) · wind (34%)

    By 10:00 in all: 9 mex · 10 wind · 4 wind · 4 tidal · 1 energy storage · 1 Naval Construction Turret

    The example game in this phase · 185 steps
    1. Wind
    2. SupporterGunboat
    3. Wind
    4. SupporterGunboat
    5. Wind
    6. Construction ShipCon ship
    7. Wind ×2
    8. Construction ShipCon ship
    9. Wind ×2
    10. RiptideFrigate
    11. Wind ×2
    12. OppressorDestroyer
    13. Wind
    14. SlingshotSlingshot
    15. Wind
    16. RiptideFrigate
    17. Wind
    18. UrchinUrchin
    19. Naval Energy Converter
    20. HerringMissile corvette
    21. Wind
    22. Naval Energy Converter
    23. HerringMissile corvette
    24. Wind
    25. Naval Energy Converter
    26. Wind
    27. SupporterGunboat
    28. Wind
    29. Naval Energy Converter
    30. UrchinUrchin
    31. SupporterGunboat
    32. Wind
    33. RiptideFrigate
    34. Tidal
    35. Wind
    36. Con turret
    37. Tidal ×2
    38. Mex
    39. Tidal
    40. OppressorDestroyer
    41. Tidal
    42. Mex
    43. Tidal
    44. Con turret
    45. Tidal
    46. GuardGuard
    47. Wind
    48. Tidal
    49. Wind
    50. GuardGuard
    51. Wind ×2
    52. Death CavalryDeath Cavalry
    53. Advanced Metal ExtractorT2 mexdone 9:38 · typical 9:58
    54. Mex
    55. Wind
    56. Tidal
    57. GuardGuard
    58. Advanced Metal ExtractorT2 mex
    59. GuardGuard
    60. Wind
    61. RiptideFrigate
    62. ShipyardEat Shipyardreclaimed for its metal
    63. Wind ×2
    64. Advanced ShipyardAdvanced Shipyarddone 11:49
    65. Wind
    66. Advanced Metal ExtractorT2 mex
    67. Wind ×7
    68. Naval Construction Turret
    69. Wind ×2
    70. Bot LabBot Labdone 11:11
    71. Advanced Metal ExtractorT2 mex
    72. Naval Construction Turret ×2
    73. Wind ×3
    74. GuardGuard
    75. Wind ×3
    76. GuardGuard
    77. Construction BotCon bot
    78. Wind
    79. Advanced Construction SubAdvanced Construction Sub
    80. Construction BotCon bot
    81. Wind
    82. Construction BotCon bot
    83. Wind
    84. Naval Construction Turret
    85. Construction BotCon bot ×3
    86. BeholderBeholder
    87. Wind
    88. Construction BotCon bot
    89. Wind
    90. Advanced Construction SubAdvanced Construction Sub
    91. Construction BotCon bot
    92. BeholderBeholder
    93. Wind ×2
    94. Construction BotCon bot
    95. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 13:34
    96. Construction BotCon bot
    97. Wind ×2
    98. Construction BotCon bot
    99. Wind ×2
    100. Construction BotCon bot
    101. Wind
    102. PawnPawn ×2
    103. Wind ×2
    104. PawnPawn
    105. Wind
    106. PawnPawn
    107. Wind
    108. PhantasmRadar jammer ship
    109. Wind
    110. PawnPawn
    111. Wind
    112. PawnPawn
    113. Wind
    114. PawnPawn
    115. Wind
    116. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    117. Wind ×2
    118. PawnPawn
    119. Wind
    120. PawnPawn
    121. Wind
    122. PawnPawn
    123. Wind
    124. OasisOasis
    125. Wind
    126. PawnPawn
    127. Wind ×2
    128. PawnPawn
    129. Wind
    130. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    131. Naval Construction Turret
    132. Wind
    133. PawnPawn
    134. Wind
    135. PawnPawn
    136. Wind ×2
    137. PawnPawn
    138. Wind ×2
    139. Mex
    140. PawnPawn
    141. Wind ×2
    142. PawnPawn
    143. Wind ×3
    144. PawnPawn
    145. Wind ×3
    146. PawnPawn
    147. DespotBattleshipnot finished by 15:00
    148. Wind
    149. Naval Energy Converter
    150. PawnPawn
    151. Wind ×3
    152. Mex
    153. Wind
    154. PawnPawn
    155. Wind
    156. PawnPawn
    157. Wind
    158. PawnPawn ×2
    159. Wind ×2
    160. Mex
    161. Wind
    162. PawnPawn
    163. Wind
    164. Converter
    165. PawnPawn
    166. Wind
    167. Naval Energy Converter
    168. Wind
    169. Converter
    170. Wind ×2
    171. PawnPawn
    172. Wind
    173. GuardGuard
    174. Converter
    175. Wind
    176. PawnPawn
    177. Wind
    178. Naval Advanced Metal ExtractorNaval Advanced Metal Extractor
    179. Converter
    180. Wind
    181. PawnPawn
    182. GuardGuard
    183. Wind ×3
    184. Converter
    185. PawnPawn

Counts are medians over the build's games: half of them build more, half fewer. The example game is RockFish's (34 OS, 16/09/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine3 Wind to Airfirst at 1:46 · in 77% of games

You get

  • Finch1 Finch from Airfirst at 2:00 · in 80% of games
  • Lazarus1 Lazarus from Geofirst at 2:13 · in 63% of games
  • Hephaestus1 Heavy transport from Airfirst at 2:16 · in 64% of games
  • Construction Bot1 Con bot from Geofirst at 2:26 · in 70% of games
  • Hercules1 Light transport from Airfirst at 2:34 · in 32% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 8:08 · in 89% 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

1793 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0040300
2:0093700
3:00155300
4:002540051
5:003716176101
6:005045487280
7:006492972592
8:00807016651001
9:00967926141532
10:001153637242325
11:001368547443105
12:001625058553875
13:001895168784645
14:002167379245691
15:002456588566520
WHAT THE NUMBERS SAY

Standard Beach sea play has the lowest team win rate of these builds and destroys far less enemy metal early than it loses eco time.

  • + Metal produced climbs to 24945 by 15:00, the highest of all six roles.
  • + Riptide and Oppressor together make 63% of army, a focused naval composition.
  • − Enemy metal destroyed is only 200 by 5:00, barely contesting early sea.
  • − T2 factory only reached in 35% of games, behind other roles' T2 timing.
THE EXAMPLE YOU ARE READING

RockFish

34.1 OS · 16/09/2026

Open source match ↗

5 received units · includes a constructor
246 metal received · 34416 energy received

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

Typical milestones

Shipyard1:56Middle 50%: 1:43–2:07 · n=1790
Riptide3:50Middle 50%: 3:12–4:34 · n=1747
Oppressor5:15Middle 50%: 4:29–6:06 · n=1726
Advanced Metal Extractor9:58Middle 50%: 9:17–10:54 · n=1517

Played most by

EpicTyrannus120games of this buildDamsko69games of this buildKbot_my_Ahole67games of this buildWaboum64games of this buildPRO_HYDRA63games of this build