Siege Casing   Xeno Siege Casing

Casing adapted for Xeno weaponry, designed for siege warfare improving targeting module weak points, with protection from oncoming projectile damage.
  — In-Game Description 
Xeno Siege Casing I II
Mass 3% weapon mass 5% weapon mass
Module Damage +10% +15%
Health 1,045 1,305
Projectile Resist 40% 50%
Obtaining (Blueprint)
Complete Blueprint
Prev. Available in
Alien Decimation (Store)
Complete Blueprint
Curr. Available in
Alien Strike (Store)
Tech Lab Required VI VIII
Time 1d 2d
Helium-3 7,784,600 9,341,520
Antimatter 2,919,225 3,503,070
Time 17m 25s 21m 45s

Xeno Siege Casing I, and II Respectively


The Xeno Siege Casing is an advanced variant of Siege Casing developed by the Xeno Division, modified to affect Alien Weapons instead. It was first available in Alien Decimation.

Strategy and Setup


Being an adapted version of the Siege Casing for Alien weapons, it is overall much better then the normal version. It has increased module damage, health, and projectile resistance which makes it even better suited more sniping bases. Along with this, its weight does not change either making it easier to equip on a hull.

Unlike the normal version and overall Xeno specials in general, it is not specific to a weapon as giving it to other Alien weapons will still make the special have its uses as its bonuses are not tailored to a specific drawback on a weapon unlike the other alien specials. This drastically gives it more viability in battles.


However, just like Siege Casing, Sniping is rarely as used as before as many simply blitz in which usually results in a faster and easier win. It also adds repair time which could add around 80m to a fleet if one uses level II on 4 destroyers, this however isn't as big as a turnoff as repair times are guaranteed in high level combat.

It also is for the Exterminator Destroyer making it useless without the hull.



  • This is the first Xeno Projectile Weapon Special.
  • Players that don't realize the Xeno Shatter Driver has fast projectile speed already often complain about why the special doesn't give any, when technically it doesn't even need it.
  • The Xeno Siege Casing offers the highest projectile resistance in the game.

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