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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 · 1797 distinct matches · 191 players · 80% of Cortex Geo sea games · team won 53% of 2101 · 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 1797 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 · 5 steps
    1. Mex ×3
    2. Wind ×3
    3. Wind ×2for Beach sea
    4. Energy storage
    5. Bot LabBot Labdone 1:31 · 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 (47%) · trasher (39%) · energy storage (36%)

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

    The example game in this phase · 10 steps
    1. GraverobberGraverobber ×2
    2. Construction BotCon bot ×3
    3. GraverobberGraverobber
    4. Mex
    5. GruntGrunt ×2
    6. TrasherTrasher
    7. Con turret
    8. Mex
    9. Bot LabEat Bot Labreclaimed for its metal
    10. ShipyardShipyarddone 3:45 · 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 (48%) · 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 · 18 steps
    1. Converter
    2. OrcaSubmarinedone 4:01 · typical 4:18
    3. Converter
    4. Mex
    5. RiptideFrigatedone 4:12 · typical 4:40
    6. Converter
    7. Construction ShipCon ship
    8. Radar TowerRadar Tower
    9. Converter
    10. GuardGuard
    11. HerringMissile corvette
    12. RiptideFrigate
    13. Converter
    14. ThistleThistle
    15. Mex
    16. OppressorDestroyerdone 5:54 · typical 5:54
    17. Converter
    18. 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 (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 · 67 steps
    1. GuardGuard
    2. Mex
    3. Converter
    4. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    5. Geothermal PowerplantGeodone 7:30 · typical 8:12
    6. RiptideFrigate
    7. Converter
    8. RiptideFrigate
    9. Wind ×2
    10. Death CavalryDeath Cavalry
    11. UrchinUrchin
    12. Wind
    13. HerringMissile corvette
    14. Wind
    15. OppressorDestroyer
    16. Wind
    17. Converter
    18. RiptideFrigate
    19. Converter
    20. RiptideFrigate
    21. Con turret
    22. UrchinUrchin
    23. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    24. Death CavalryDeath Cavalry
    25. UrchinUrchin
    26. HerringMissile corvette
    27. OppressorDestroyer
    28. RiptideFrigate
    29. UrchinUrchin
    30. Converter
    31. UrchinUrchin
    32. RiptideFrigate
    33. Converter
    34. Death CavalryDeath Cavalry
    35. Converter
    36. HerringMissile corvette
    37. Converter
    38. OppressorDestroyer
    39. UrchinUrchin
    40. Con turret
    41. Advanced Metal ExtractorT2 mexdone 12:08 · typical 9:25
    42. RiptideFrigate
    43. Death CavalryDeath Cavalry ×3
    44. RiptideFrigate
    45. Con turret
    46. Death CavalryDeath Cavalry
    47. Advanced Metal ExtractorT2 mex
    48. HerringMissile corvette
    49. OppressorDestroyer
    50. Metal storage
    51. UrchinUrchin
    52. Con turret
    53. RiptideFrigate
    54. Con turret
    55. RiptideFrigate ×2
    56. Advanced Metal ExtractorT2 mex
    57. Death CavalryDeath Cavalry
    58. Mex
    59. HerringMissile corvette
    60. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    61. OppressorDestroyer
    62. RiptideFrigate
    63. Advanced ShipyardAdvanced Shipyarddone 14:28
    64. Advanced Metal ExtractorT2 mex
    65. BrimstoneAnti-swarm shipnot finished by 15:00
    66. PhantasmRadar jammer ship
    67. DespotBattleshipnot finished by 15:00

Counts are medians over the build's games: half of them build more, half fewer. The example game is mobius1's (31 OS, 16/08/2026); 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

2101 games.

Show as table
ByMetal produced: This buildEnemy metal destroyed: This buildOwn metal lost: This build
1:0039800
2:0092900
3:00155500
4:002864051
5:00406414652
6:005412440232
7:006889905543
8:0085691541901
9:001041124511350
10:001252935102010
11:001507746792784
12:001800460413641
13:002121071754367
14:002476384045204
15:002857995926202
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

mobius1

30.7 OS · 16/08/2026

Open source match ↗

4 received units · includes a constructor
176 metal received · 338009 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=2074
Shipyard3:18Middle 50%: 3:02–3:36 · n=2092
Orca4:18Middle 50%: 3:52–5:00 · n=1422
Riptide4:40Middle 50%: 4:09–5:23 · n=2045
Oppressor5:54Middle 50%: 5:12–6:40 · n=1922
Geothermal Powerplant8:12Middle 50%: 7:12–9:25 · n=1375
Advanced Metal Extractor9:25Middle 50%: 8:48–10:22 · n=1831

Played most by

SHOGVN221games of this buildsirniho126games of this buildElpoloow118games of this buildOptimusprimenutt95games of this buildhihimik77games of this build