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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 ×3
    2. Wind ×2for Air
    3. Wind ×2
    4. Bot LabBot Labdone 1:12 · 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 · 11 steps
    1. Wind
    2. GraverobberGraverobber
    3. Construction BotCon bot
    4. Wind ×3
    5. GraverobberGraverobber
    6. Construction BotCon bot
    7. Mex
    8. Construction BotCon botfor Beach sea
    9. Con turret
    10. Radar TowerRadar Tower
    11. ShipyardShipyarddone 3:05 · 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 · 16 steps
    1. Construction BotCon bot
    2. Mex
    3. Construction ShipCon ship
    4. RiptideFrigatedone 3:57 · typical 4:40
    5. GruntGrunt
    6. Mex ×2
    7. Radar TowerRadar Tower
    8. RiptideFrigate
    9. Geothermal PowerplantGeodone 6:54 · typical 8:13
    10. Wind
    11. ThistleThistle
    12. GruntGrunt
    13. Radar TowerRadar Tower
    14. Mex
    15. Wind ×3
    16. 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 · 59 steps
    1. Wind
    2. OrcaSubmarinedone 6:08 · typical 4:17
    3. Wind ×4
    4. JellyfishJellyfish
    5. GuardGuard
    6. Wind ×6
    7. HerringMissile corvette
    8. GuardGuard
    9. Wind
    10. Bot LabEat Bot Labreclaimed for its metal
    11. HerringMissile corvette
    12. ThistleThistle
    13. Converter ×2
    14. RiptideFrigate
    15. Radar TowerRadar Tower
    16. Converter
    17. RiptideFrigate
    18. Converter
    19. ThistleThistle
    20. Converter
    21. RiptideFrigate
    22. Converter
    23. OppressorDestroyerdone 8:16 · typical 5:54
    24. GuardGuard
    25. Twin GuardTwin Guard
    26. Converter ×2
    27. OppressorDestroyer
    28. GuardGuard
    29. Advanced Metal ExtractorT2 mexdone 9:12 · typical 9:25
    30. Death CavalryDeath Cavalry
    31. Twin GuardTwin Guard
    32. Death CavalryDeath Cavalry
    33. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    34. Advanced Metal ExtractorT2 mex
    35. HerringMissile corvette
    36. Advanced Metal ExtractorT2 mex
    37. Construction ShipCon ship
    38. RiptideFrigate ×2
    39. Naval Construction Turret
    40. RiptideFrigate ×3
    41. Advanced Metal ExtractorT2 mex
    42. OppressorDestroyer
    43. Naval Construction Turret
    44. Mex
    45. Naval Construction Turret
    46. OppressorDestroyer
    47. Advanced ShipyardAdvanced Shipyarddone 12:29
    48. Advanced Metal ExtractorT2 mex
    49. DespotBattleshipdone 13:26
    50. Naval Radar / Sonar TowerNaval Radar / Sonar Tower
    51. PhantasmRadar jammer ship
    52. Advanced Metal ExtractorT2 mex
    53. GuardGuard
    54. Advanced Construction SubAdvanced Construction Sub
    55. PathfinderPathfinder ×2
    56. Naval Advanced Metal ExtractorNaval Advanced Metal Extractordone 14:49
    57. Death CavalryDeath Cavalry
    58. BuccaneerCruisernot finished by 15:00
    59. Death CavalryDeath Cavalry

Counts are medians over the build's games: half of them build more, half fewer. The example game is Parasaurolophus's (30 OS, 10/10/2026); 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

Parasaurolophus

30.0 OS · 10/10/2026

Open source match ↗

3 received units · includes a constructor
264 metal received · 6641 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
Standard geo sea · Cortex Geo sea build order · BAR Build Atlas