Flyer Attacks

From The StarCraft 2 Wiki

Flyer Attacks is an upgrade that is available for the Zerg that enhances the damage output of all air units. It is researched from the Spire and, like all weapon and armor upgrades, it has a research time that is noticeably longer than the units build duration.

Contents 1 Starcraft II 1.1 Costs 1.2 Affected Units 2 StarCraft I 2.1 Costs 2.2 Affected Units

Starcraft II

Costs

The research time for each weapon upgrade has been reduced considerably since StarCraft I.

The hotkey to Evolve Flyer Attacks is: A

Upgrade Level	Mineral Cost	Gas Cost	Research Time	Icon
Level 1	100	100	160
Level 2	175	175	190
Level 3	250	250	220

Affected Units

The Zerg in StarCraft II have three air units that can benefit from the Flyer Attack upgrade:

StarCraft II Unit	Ground Bonus *	Air Bonus *
Corruptor	-	??
Mutalisk	??	??
Swarm Guardian	??	-

* The attack bonus is accumulative per each upgrade level.

StarCraft I

Costs

Each Flyer Attack upgrade from the Spire costs an extra 75 , 75 and 32 , and a max level of 3 in the open multiplayer.

Upgrade Level	Mineral Cost	Gas Cost	Research Time	Icon
Level 1	100	100	266
Level 2	175	175	298
Level 3	250	250	330

Affected Units

The current StarCraft I units that receive a benefit from the Flyer Attack upgrades include:

StarCraft I Unit	Ground Bonus *	Air Bonus *
Mutalisk	+1	+1
Guardian	+2	-
Devourer	-	+2

* The attack bonus is accumulative per each upgrade level.