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Geo sea / Cortex / Economy first / OBSERVED BUILD

Standard geo sea

Cortex Geo sea build order · Supreme Isthmus

Builds Bot Lab then Shipyard in the cove, eating the lab for metal, and pushes out Orca, Riptide and Oppressor to contest the sea starting around 4-6 minutes, transitioning into a Riptide/Oppressor-heavy navy over the rest of the game.

Usually shipyard in the cove (98%)

#naval #eco · 1756 distinct matches · 186 players · 80% of Cortex Geo sea games · team won 53% of 2055 · 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 1756 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 ×3
    2. Wind
    3. Wind ×2for Tech
    4. Bot LabBot Labdone 1:09 · typical 1:13
  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 · 12 steps
    1. Wind
    2. Construction BotCon botfor Beach sea
    3. Wind
    4. GraverobberGraverobber
    5. Construction BotCon bot
    6. GraverobberGraverobber
    7. JellyfishJellyfish
    8. GruntGrunt
    9. Mex
    10. GruntGrunt
    11. TrasherTrasher
    12. ShipyardShipyarddone 3:01 · typical 3:18
  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 · 19 steps
    1. Mex
    2. Construction BotCon bot
    3. Tidal
    4. Construction ShipCon ship
    5. ThistleThistlefor Beach sea
    6. Tidal
    7. Mex
    8. OrcaSubmarinedone 4:21 · typical 4:17
    9. Mexfor Beach sea
    10. Mex ×2
    11. GuardGuard
    12. Mex
    13. RiptideFrigatedone 4:39 · typical 4:39
    14. Bot LabEat Bot Labreclaimed for its metal
    15. Radar TowerRadar Tower
    16. RiptideFrigate
    17. GuardGuard
    18. HerringMissile corvette
    19. GuardGuard
  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 (38%) · 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 · 54 steps
    1. Mex
    2. HerringMissile corvette ×3
    3. OppressorDestroyernot finished by 15:00 · typical 5:54
    4. Death CavalryDeath Cavalry
    5. GuardGuard
    6. OppressorDestroyer ×2
    7. Geothermal PowerplantGeodone 8:24 · typical 8:13
    8. Construction ShipCon ship
    9. UrchinUrchin
    10. RiptideFrigate ×2
    11. Death CavalryDeath Cavalry
    12. RiptideFrigate
    13. OrcaSubmarine
    14. Advanced Metal ExtractorT2 mexdone 10:53 · typical 9:25
    15. OppressorDestroyer
    16. HerringMissile corvette
    17. OppressorDestroyer
    18. Converter ×3
    19. Advanced Metal ExtractorT2 mex
    20. RiptideFrigate
    21. HerringMissile corvette
    22. Converter
    23. HerringMissile corvette ×2
    24. Converter
    25. RiptideFrigate ×2
    26. Converter
    27. RiptideFrigate
    28. Naval Construction Turret
    29. Converter
    30. Advanced Metal ExtractorT2 mex
    31. Converter
    32. Naval Construction Turret
    33. HerringMissile corvette
    34. Converter
    35. Naval Construction Turret
    36. HerringMissile corvette
    37. RiptideFrigate
    38. Energy storage
    39. Death CavalryDeath Cavalry ×2
    40. Tidal
    41. Metal storage
    42. Tidal
    43. Death CavalryDeath Cavalry
    44. Tidal
    45. Death CavalryDeath Cavalry
    46. Tidal
    47. OppressorDestroyer
    48. Tidal
    49. Advanced Metal ExtractorT2 mex
    50. Tidal
    51. OppressorDestroyer
    52. Tidal ×2
    53. RiptideFrigate
    54. Tidal

Counts are medians over the build's games: half of them build more, half fewer. The example game is [Grump]Matsuri's (40 OS, 14/10/2026); 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

2055 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
6:005414441232
7:006890905545
8:0085761551914
9:001040524601360
10:001252635382031
11:001507747142812
12:001801760503664
13:002121572284375
14:002478384355225
15:002859096346211
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

[Grump]Matsuri

40.2 OS · 14/10/2026

Open source match ↗

3 received units · includes a constructor
234 metal received · 14459 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=2028
Shipyard3:18Middle 50%: 3:02–3:36 · n=2046
Orca4:17Middle 50%: 3:52–4:59 · n=1392
Riptide4:39Middle 50%: 4:08–5:22 · n=2002
Oppressor5:54Middle 50%: 5:11–6:39 · n=1879
Geothermal Powerplant8:13Middle 50%: 7:13–9:26 · n=1335
Advanced Metal Extractor9:25Middle 50%: 8:47–10:21 · n=1793

Played most by

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