Defenses : Boom Cannon

Level 1	Level 2-5	Level 6-9	Level 10	Level 11-14

---

• Summary
  • The Boom Cannon is the sixth defense to unlock in the game.
  • The Boom Cannon is one of the strongest defenses in the game and is very effective against high health troops, such as Tanks or Heavies.

---

• Offensive Strategy
  • When attacking Boom Cannons, be sure to either destroy them upfront with a Barrage orArtillery, or limit your time in range of them without them being shocked. A Boom Cannon picking off your large units can ruin an attack.
  • Boom Cannons have a long reload time, so they can easily be taken out by a group of small troops.
  • It is possible for Tanks to avoid the shots of a Boom Cannon on the opposite side of theHeadquarters unless it is right up against the Headquarters. If there is even one space between the Boom Cannon and the Headquarters, your Tanks will be out of range on the opposite side if you maneuver them correctly.

• Defensive Strategy
  • Once a total of 4 Boom Cannons are available, it is effective to place them in a diamond or square formation in your base well distanced so that it covers as much of your island as possible.
    • On the other hand, you may want to place them all close to your Headquarters to prevent attackers from avoiding certain Boom Cannons entirely simply by attacking the base from the opposite side.
  • Do not place your Boom Cannons in front of all your other buildings like many people do. Boom Cannons are most effective when they are able to take advantage of their long range and target attackers' troops for long periods of time.

---

• Upgrade Differences
  • Initially, the Boom Cannon is a gray structure with a stone base surrounded by sandbags. It has brown plating, valves on both the side and the back, as well as a long barrel.
  • At level 6, the Boom Cannon gains a thicker barrel and slightly darker colored plating and barrel. The sandbags around the base are removed.
  • At level 10, the Boom Cannon gains a metal base, an even thicker barrel, tubes at the back, and darker colored plating.
  • At level 11, the Boom Cannon gains a heavily armored base.

---

• Trivia
  • The Boom Cannon is the slowest-firing of the single-target defenses, but causes the most damage per shot of any defense (with the exception of the Boom Mine, which is a single-use item).
  • Although the Boom Cannon does double damage to Tanks, if both Tanks and other troops are in its range, it simply targets whichever is closest and doesn't prioritize Tanks.

Headquarters Level	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20
Number Available	0	0	0	0	0	0	0	0	0	0	0	1	1	2	2	2	3	3	3	4

Building Size	Range	Attack Speed	Damage Type	Special Ability
3x3	14	4 Seconds	Single	Deals double damage to tanks

Level	Health	Damage Per Second	Damage Per Shot	Upgrade Cost			Upgrade Time	Headquarters Level Required	Xp Gain
				Wood	Stone	Iron
1	3,500	260	1,040	121,000	57,000	14,900	5h	12	24
2	3,850	286	1,144	141,000	66,000	17,300	6h	12	26
3	4,200	315	1,260	198,000	119,000	34,000	7h	13	28
4	4,700	346	1,384	255,000	153,000	44,000	8h	13	31
5	5,100	381	1,524	350,000	308,000	85,000	10h	14	40
6	5,600	419	1,676	610,000	460,000	168,000	12h	15	44
7	6,200	461	1,844	850,000	760,000	330,000	14h	16	50
8	6,800	507	2,028	950,000	850,000	370,000	16h	16	54
9	7,500	557	2,228	1,350,000	1,110,000	700,000	18h	17	58
10	8,300	613	2,452	1,650,000	1,500,000	990,000	20h	18	60
11	9,100	674	2,696	1,810,000	1,650,000	1,080,000	22h	18	61
12	10,000	742	2,968	2,040,000	1,980,000	1,560,000	1d 2h	19	63
13	11,000	816	3,264	2,260,000	2,270,000	2,260,000	1d 8h	20	67
14	12,100	898	3,592	2,470,000	2,470,000	2,460,000	1d 12h	20	70