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Geo sea / Cortex / Economy first / OBSERVED BUILD

Standard geo sea

Cortex Geo sea build order · Supreme Isthmus

The role's default economy-first opening: bot lab then shipyard in the cove, early frigate and destroyer with a sub, taking geo on time before transitioning into a mixed navy for the rest of the game.

Usually shipyard in the cove (98%)

#naval #eco · 1767 distinct matches · 190 players · 80% of Cortex Geo sea games · team won 53% of 2066 · Recently observed

HOW TO PLAY IT

Key timing: Bot Lab by 1:12, Shipyard by 3:17

  1. Open 3 mex into wind, then drop Bot Lab in cove.
  2. Finish Bot Lab, keep teching mex and wind.
  3. Get Shipyard up and start pumping subs and frigates.
  4. Eat the Bot Lab for metal once you have T1 units defending.
  5. Push out submarine, frigate, destroyer to contest sea.
  6. Bring geothermal online and transition toward T2 constructor.

Phase by phase

TYPICAL OF ITS 1767 GAMES
  1. 1
  2. 2
  3. 3
  4. 4
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 Bot Lab

    Economy
    • Metal Extractor3Mex
    • Wind Turbine3Wind
    • Wind Turbine1Windfor allies
    Order
    1. Bot LabBot Lab after 3 mex, 3 winddone ~1:13, middle half 1:07–1:25

    By 0:55 in all: 3 mex · 3 wind

    The example game in this phase · 4 steps
    1. Mex ×3for Beach sea
    2. Windfor Beach sea
    3. Wind ×3for Suicide front
    4. Energy storagefor Suicide front
  2. 2

    Bot Lab to Shipyard

    Economy
    • Metal Extractor1Mex
    • Wind Turbine1Wind
    Order
    1. ShipyardShipyard after 4 mex, 5 wind, 1 energy storagedone ~3:18, middle half 3:02–3:36
    Builders
    • Construction Bot3 Con bot
    • Graverobber2 Graverobber
    Army
    • Grunt1 Grunt

    Some games also: con turret (46%) · trasher (39%) · energy storage (36%)

    By 2:52 in all: 4 mex · 5 wind · 1 energy storage

    The example game in this phase · 8 steps
    1. ShipyardShipyardfor Suicide frontdone 1:50
    2. DolphinDolphin ×2
    3. Tidal ×3for Suicide front
    4. Construction ShipCon ship
    5. Tidalfor Suicide front
    6. Wind ×2for Suicide front
    7. Construction ShipCon shipfor Suicide front
    8. Windfor Suicide front
  3. 3

    Shipyard to 5:00

    Economy
    • Metal Extractor4Mex
    Order
    1. Bot LabEat Bot Lab
    Builders
    • Construction Ship1 Con ship
    Army
    • Riptide2 Frigate
    • Orca1 Submarine
    Other
    • Radar Tower1 Radar Tower

    Some games also: missile corvette (49%) · wind (49%) · Guard (48%) · destroyer (44%) · gunboat (39%)

    By 5:00 in all: 8 mex · 6 wind · 1 energy storage · 1 con turret

    The example game in this phase · 15 steps
    1. Windfor Suicide front
    2. Mexfor Suicide front
    3. Wind ×2for Suicide front
    4. Converterfor Suicide front
    5. Grim ReaperGrim Reaper
    6. Mexfor Suicide front
    7. Converter ×2for Suicide front
    8. EllysawFrigate
    9. Converter ×2for Suicide front
    10. SkaterSkater
    11. Converterfor Suicide front
    12. CorsairDestroyerdone 5:13
    13. Mexfor Suicide front
    14. Naval Radar / Sonar TowerNaval Radar / Sonar Tower ×2for Suicide front
    15. Windfor Suicide front
  4. 4

    5:00 to 10:00

    Economy
    • Metal Extractor2Mex
    • Wind Turbine8Wind
    • Energy Converter2Converter
    Order
    1. Geothermal PowerplantGeo after 9 mex, 9 wind, 2 converterin 53% of games
    Builders
    • Construction Turret1 Con turret
    • Death Cavalry2 Death Cavalry
    • Construction Ship1 Con ship
    Army
    • Guard1 Guard
    • Riptide5 Frigate
    Other
    • Naval Radar / Sonar Tower2 Naval Radar / Sonar Tower

    Some games also: Thistle (39%) · submarine (32%)

    By 10:00 in all: 10 mex · 15 wind · 1 geo · 4 converter · 1 energy storage · 2 con turret

    The example game in this phase · 73 steps
    1. SkaterSkater
    2. Wind ×3for Suicide front
    3. Naval Construction Turretfor Suicide front
    4. EllysawFrigate
    5. Wind ×2for Suicide front
    6. HarpoonHarpoonfor Suicide front
    7. Wind ×4for Suicide front
    8. Converterfor Suicide front
    9. CorsairDestroyer
    10. Converterfor Suicide front
    11. HarpoonHarpoonfor Suicide front
    12. Windfor Suicide front
    13. HarpoonHarpoonfor Suicide front
    14. Wind ×8for Suicide front
    15. EllysawFrigate
    16. Wind ×3for Suicide front
    17. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    18. Windfor Suicide front
    19. EllysawFrigate
    20. Wind ×3for Suicide front
    21. EllysawFrigate
    22. Windfor Suicide front
    23. Grim ReaperGrim Reaper
    24. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    25. Wind ×3for Suicide front
    26. Grim ReaperGrim Reaper
    27. Wind ×2for Suicide front
    28. SentrySentryfor Suicide front
    29. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    30. EllysawFrigate
    31. Tidalfor Suicide front
    32. Wind ×2for Suicide front
    33. Con turretfor Suicide front
    34. Tidalfor Suicide front
    35. Windfor Suicide front
    36. EllysawFrigate
    37. Windfor Suicide front
    38. Tidalfor Suicide front
    39. Windfor Suicide front
    40. Tidalfor Suicide front
    41. Windfor Suicide front
    42. Advanced Metal ExtractorT2 mexfor Suicide frontdone 10:48 · typical 9:25
    43. Tidalfor Suicide front
    44. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    45. Tidalfor Suicide front
    46. EllysawFrigate
    47. Windfor Suicide front
    48. Grim ReaperGrim Reaper
    49. Naval Energy Storagefor Suicide front
    50. Wind ×2for Suicide front
    51. Grim ReaperGrim Reaperfor Suicide front
    52. Windfor Suicide front
    53. Advanced Metal ExtractorT2 mexfor Suicide front
    54. Wind ×5for Suicide front
    55. HarpoonHarpoonfor Suicide front
    56. EllysawFrigatefor Suicide front
    57. Mex
    58. Wind ×2for Suicide front
    59. HarpoonHarpoon
    60. Wind ×3for Suicide front
    61. HarpoonHarpoonfor Suicide front
    62. Windfor Suicide front
    63. Advanced Metal ExtractorT2 mexfor Suicide front
    64. Windfor Suicide front
    65. CorsairDestroyerfor Suicide front
    66. HarpoonHarpoon
    67. HarpoonHarpoonfor Suicide front
    68. Wind ×2for Suicide front
    69. CorsairDestroyerfor Suicide front
    70. Wind ×3for Suicide front
    71. Naval Construction Turretfor Suicide front
    72. CorsairDestroyerfor Suicide front
    73. Advanced Metal ExtractorT2 mexfor Suicide front

Counts are medians over the build's games: half of them build more, half fewer. The example game is optimusprime3000's (31 OS, 01/10/2026); pick another.

Team trades

IN AT LEAST 30% OF ITS GAMES

You hand over

  • Wind Turbine2 Wind to Airfirst at 1:44 · in 72% of games

You get

  • Finch1 Finch from Airfirst at 1:52 · in 82% of games
  • Hercules1 Light transport from Airfirst at 1:59 · in 76% of games
  • Advanced Construction Bot1 T2 con bot from Techfirst at 7:44 · in 90% 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

2066 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039800
2:0092900
3:00155700
4:002865051
5:00406614652
6:005414440232
7:006890905543
8:0085731547908
9:001040824581353
10:001253035282022
11:001507247082804
12:001801760503661
13:002121672254375
14:002477884365224
15:002858596396201
WHAT THE NUMBERS SAY

This is the role's own baseline, winning a bit over half its games with steady eco scaling and sea trades roughly matching losses.

  • + Team wins slightly over half of games played.
  • + Metal production scales from ~4k to ~29.5k by 15:00.
  • − Own metal lost climbs to 6875 by 15:00, matching kills closely.
  • − T2 factory only reached in 40% of games, limiting late power.
THE EXAMPLE YOU ARE READING

optimusprime3000

31.3 OS · 01/10/2026

Open source match ↗

13 received units · includes a constructor
17 metal received · 41357 energy received

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

Typical milestones

Bot Lab1:13Middle 50%: 1:07–1:25 · n=2039
Shipyard3:18Middle 50%: 3:02–3:36 · n=2057
Orca4:17Middle 50%: 3:52–5:00 · n=1397
Riptide4:40Middle 50%: 4:09–5:22 · n=2013
Oppressor5:54Middle 50%: 5:11–6:40 · n=1890
Geothermal Powerplant8:13Middle 50%: 7:13–9:26 · n=1343
Advanced Metal Extractor9:25Middle 50%: 8:48–10:21 · n=1801

Played most by

SHOGVN221games of this buildsirniho126games of this buildElpoloow118games of this buildOptimusprimenutt95games of this buildhihimik72games of this build