Defenses

Every anti-air gun, launcher and the Iron Dome: range, chance to shoot down each kind of missile, Mk 1 to 3 prices and health, and the caps for every HQ level.

Basic Anti Air

Cheap starter gunFlak gun, HQ 1

Range: 200 studs
Fires every: 1.2s
Per shell, light missilepoint blank to max range: 16% to 10.4%
Per shell, heavy missilex0.5 heavy factor: 8% to 5.2%
Hits aircraft: 45%

Mark	Price	Unlocks	Health at unlock	At HQ 10
Mk 1	$600	HQ 1	1,080	13.8M
Mk 2	$4,800	HQ 3	21.8K	34.5M
Mk 3	$38K	HQ 5	432K	82.8M

Alien Laser

Alien beam: hits everythingGuided missiles, HQ 1, live event

Range: 640 studs
Reload1 rack, 0.15s lock-on: 1s
Hits a light missile: 60%
Hits a heavy missile: 55%
Hits a hypersonic: 50%
Hits aircraft: 80%

Mark	Price	Unlocks	Health at unlock	At HQ 10
Mk 1	$2.5B	HQ 1	2,880	36.8M
Mk 2rebirth 3	$200B	HQ 3	58K	92M
Mk 3rebirth 3	$12T	HQ 5	1.2M	221M

Kestrel

Heavy cannon: longer rangeFlak gun, HQ 2

Range: 260 studs
Fires every: 1s
Per shell, light missilepoint blank to max range: 22% to 14.3%
Per shell, heavy missilex0.6 heavy factor: 13.2% to 8.58%
Hits aircraft: 50%

Mark	Price	Unlocks	Health at unlock	At HQ 10
Mk 1	$3,000	HQ 2	3,500	16.1M
Mk 2	$24K	HQ 4	72.6K	40.3M
Mk 3	$190K	HQ 6	1.4M	96.6M

Harrier

Twin cannon: 2 shells a shotFlak gun, HQ 3

Range: 320 studs
Fires every2 shells a shot: 0.8s
Per shell, light missilepoint blank to max range: 18% to 11.7%
Per shell, heavy missilex0.55 heavy factor: 9.9% to 6.44%
Hits aircraft: 50%

Mark	Price	Unlocks	Health at unlock	At HQ 10
Mk 1	$15K	HQ 3	11.6K	18.4M
Mk 2	$120K	HQ 5	240K	46M
Mk 3	$960K	HQ 7	4.8M	110M

Coastal Gun

Sinks enemy shipsAnti-ship gun, HQ 4

Range: 400 studs
Fires every: 4s
Targets: enemy ships only

Mark	Price	Unlocks	Health at unlock	At HQ 10
Mk 1	$200K	HQ 4	33.2K	18.4M
Mk 2	$1.6M	HQ 6	680K	46M
Mk 3	$13M	HQ 8	13.4M	110M

Flak Cannon

Man it yourself!Flak gun, HQ 4

Range: 380 studs
Fires every2 shells a shot: 0.9s
Per shell, light missilepoint blank to max range: 20% to 13%
Per shell, heavy missilex0.5 heavy factor: 10% to 6.5%
Hits aircraft: 55%

Mark	Price	Unlocks	Health at unlock	At HQ 10
Mk 1	$250K	HQ 4	41.5K	23M
Mk 2rebirth 6	$2M	HQ 6	850K	57.5M
Mk 3rebirth 6	$16M	HQ 8	16.8M	138M

Sentinel

Minigun: shreds planesMinigun, HQ 5

Range: 360 studs
Fire rate: 10 shots a second
Per shell, light missilepoint blank to max range: 3.5% to 2.28%
Per shell, heavy missilex0.5 heavy factor: 1.75% to 1.14%
Hits aircraft: 35%

Mark	Price	Unlocks	Health at unlock	At HQ 10
Mk 1	$2.5M	HQ 5	120K	23M
Mk 2	$20M	HQ 7	2.5M	57.5M
Mk 3	$160M	HQ 9	48M	138M

Guided Missile Launcher

Guided missiles: hits everythingGuided missiles, HQ 6

Range: 520 studs
Reload2 racks, 0.45s lock-on: 8s
Hits a light missile: 78%
Hits a heavy missile: 70%
Hits a hypersonic: 45%
Hits aircraft: 85%

Mark	Price	Unlocks	Health at unlock	At HQ 10
Mk 1	$40M	HQ 6	408K	27.6M
Mk 2	$320M	HQ 8	8.4M	69M
Mk 3	$2.6B	HQ 10	166M	166M

Iron Dome

Shoots at EVERY missileDome, HQ 7

Range: 600 studs
Reload: 1.5s
Per shell, light missilepoint blank to max range: 25% to 16.3%
Per shell, heavy missilex0.6 heavy factor: 15% to 9.75%

Mark	Price	Unlocks	Health at unlock	At HQ 10
Mk 1	$500M	HQ 7	1.4M	32.2M
Mk 2	$4B	HQ 9	28M	80.5M
Mk 3	$32B	HQ 10	193M	193M

How many per HQ level

Defense	1	2	3	4	5	6	7	8	9	10
Basic Anti Air	1	2	3	3	4	4	4	4	4	4
Alien Laser	1	1	1	1	1	1	1	1	1	1
Kestrel	-	1	1	2	2	2	3	3	4	4
Harrier	-	-	1	1	2	2	2	3	3	3
Coastal Gun	-	-	-	1	2	2	3	3	4	4
Flak Cannon	-	-	-	1	1	1	1	2	2	2
Sentinel	-	-	-	-	1	1	2	2	3	3
Guided Launcher	-	-	-	-	-	1	1	2	2	3
Iron Dome	-	-	-	-	-	-	1	1	1	1

Columns are HQ levels; a dash means that defense isn't allowed yet.

About defenses

Guns fire shells that each have a chance to hit; that chance drops by 35% from point blank to the gun's max range, heavy missiles are harder to hit, and nothing above 95% is possible. Defense health depends on your HQ level, so the same Mk 1 gun is far tougher on a bigger island. See which missiles get through in the missile list.

Questions

What is the best defense in World of Nukes?

For stopping missiles, the Guided Missile Launcher: 78% against light missiles, 70% against heavy and 45% against hypersonic ones, out to 520 studs. The Iron Dome fires at every incoming missile, though Orbital Strike gets through it.

How many defenses can I build?

It depends on your HQ: at HQ 1 you get 1 Basic Anti Air and 1 Alien Laser; at HQ 10, 25 in total. The grid below has every level.

What do Mk upgrades do?

Mk 2 costs 8x the Mk 1 price, has 2.5x the health and x1.3 hit chance, and unlocks 2 HQ levels later. Mk 3 costs 64x the Mk 1 price, has 6x the health and x1.6 hit chance, and unlocks 4 HQ levels later.

Can I control the Flak Cannon?

Yes. Sit in it and it reaches 1,100 studs in bursts of 42 rounds that can shoot down missiles; its Mk upgrades unlock at rebirth 6.

How do I get the Alien Laser?

It costs $2.5B and is tied to a live event; Mk 2 is $200B and Mk 3 $12T. Manned, its beam reaches 1,200 studs.