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Base Cost
Metal: 20.000
Crystal: 40.000
Deuterium: 20.000
Energy: 0
Sensor Phalanx

The Sensor Phalanx, only buildable on a moon, is one of the most useful buildings in the game. Using the Phalanx you can scan a planet for 5,000 deuterium. Fleets in flight towards the planet will be shown, together with their composition of ships and time of arrival (note that you don't see resources that fleets are carrying). This allows a player to send their fleet on an attack that is timed to arrive a few seconds after the target fleet gets back, leaving not enough time for it to be saved again. Note that moons cannot be scanned with a Sensor Phalanx due to their lack of atmosphere.

Sensor Phalanxes are also useful when attacking another player. When attacking another player, the person being attacked can see the attacking fleet coming in. Often, the person being attacked will "ninja" the attacker: move a sizable fleet to the target so that it arrives seconds before the attacking fleet, destroying it, and turning the attacker's fleet into debris. A Sensor Phalanx can be used by the attacker to see if the target is moving a fleet in an attempt to "ninja" the attacking fleet, and the attacker can then decide to call off the attack if need be.

Before moving your fleet to a new area, it is important to be aware of nearby moons. You can find out the ranges of other phalanxes by probing their moons. It should be noted that when another player sensor phalanxes you, there is no in-game message or any message at all notifying you. The only way you could tell that you have been sensor phalanxed is if you see an attacking fleet coming at you within seconds of your own fleet's return. Sensor phalanxes give information on the fleet's origin, size, where it is heading, how long it will take to get there, and when it will get back. If you only see a fleet that has already completed its mission, you won't be able to see the composition of the fleet. In this sense, it is possible to avoid sensor phalanxes by stationing your fleet on a moon, and then fleetsaving from the moon (e.g., to a debris field). As stated above, moons cannot be scanned; therefore, if a player has at least two moons, a fleetsave from one moon to another moon is the safest possible fleetsave and cannot be detected in any way.

After the Lifeforms update, the Sensor Phalanx can now see the speed of the slowest ship in each fleet.

Level Table[]

Level Cost Range
Metal Crystal Deuterium
1 20,000 40,000 20,000 1
2 40,000 80,000 40,000 3
3 80,000 160,000 80,000 8
4 160,000 320,000 160,000 15
5 320,000 640,000 320,000 24
6 640,000 1,280,000 640,000 35
7 1,280,000 2,560,000 1,280,000 48
8 2,560,000 5,120,000 2,560,000 63
9 5,120,000 10,240,000 5,120,000 80
10 10,240,000 20,480,000 10,240,000 99
11 20,480,000 40,960,000 20,480,000 120
12 40,960,000 81,920,000 40,960,000 143
13 81,920,000 163,840,000 81,920,000 168
14 163,840,000 327,680,000 163,840,000 195
15 327,680,000 655,360,000 327,680,000 224
16 655,360,000 1,310,720,000 655,360,000 255
Level Metal Crystal Deuterium Range
Cost

What a Sensor Phalanx Can See[]

If you scan the target planet of the fleet

If you scan the home planet of the fleet

  • Fleets coming home from any mission (except Recalled deployment)
  • Fleets on a hold or expedition mission

What a Sensor Phalanx Cannot See[]

If you scan the target planet:

  • Fleets heading to the planet's DF from moon
  • Fleets heading to the planet's moon
  • Harvesting fleets launched from or returning to a moon
  • Deployment missions from a planet to another planet THAT HAVE BEEN RECALLED
    • (Note: This is the only fleetsaving method from a planet without a moon that cannot be seen, but it has to be recalled before reaching the target before it drops off from the Phalanx scan)

In short, you will see when a fleet is arriving at the target planet, whether that fleet is deployed to the target, attacking the target, or some mission from the target that will return the fleet to the target. The key is that a fleet will be making a stop at the target planet, whether it is the target of a mission or the origin of a round trip mission.

Range Formula[]

Phalanx range

This range is the number of Solar Systems on both sides of your moon's coordinates that can be scanned.

(Note : With level 1 sensor phalanx, only the solar system containing the moon with the sensor on it can be scanned.)

See also[]

External links[]

Buildings in OGame
Resources Metal MineMetal StorageCrystal MineCrystal StorageDeuterium SynthesizerDeuterium TankFusion ReactorSolar PlantSolar Satellite (ship)
Facilities Alliance DepotJump GateLunar BaseMissile SiloNanite FactoryResearch LabRobotics FactorySensor PhalanxShipyardTerraformer
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