Walls

No fortress can withstand an enemy attack without thick walls protecting it.

Lvl. 1	Lvl. 2	Lvl. 3	Lvl. 4	Lvl. 5
Lvl. 6	Lvl. 7	Lvl. 8	Lvl. 9	Lvl. 10
Lvl. 11	Lvl. 12	Lvl. 13	Lvl. 14	Lvl. 15
Lvl. 16	Lvl. 17	Lvl. 18	Lvl. 19	Lvl. 20

The higher is your Castle level, the more wall segments are available for construction.

Castle Level	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20
Amount of walls	-	40	55	70	85	100	120	140	160	180	200	225	250	275	300	325	350	375	400	425

Wall characteristics (hitpoints, upgrade time & cost of 1 segment) increase with each upgrade.

Level	Gold	Sand	Hitpoints	Time	Castle Level
1	100	n/a	350	0 sec	2
2	1 000	n/a	550	0 sec	2
3	5 500	n/a	750	0 sec	3
4	20 000	n/a	1050	0 sec	4
5	50 000	n/a	1550	0 sec	5
6	90 000	n/a	2200	0 sec	6
7	150 000	n/a	3100	0 sec	7
8	350 000	n/a	4100	0 sec	8
9	450 000	n/a	5400	0 sec	9
10	1 000 000	n/a	6800	0 sec	10
11	2 000 000	8000	8400	0 sec	11
12	3 000 000	14 000	10 250	0 sec	12
13	4 000 000	16 000	12 350	0 sec	13
14	5 000 000	30 000	14 600	0 sec	14
15	6 000 000	50 000	17 100	0 sec	15
16	7 000 000	80 000	19 600	0 sec	16
17	8 000 000	100 000	21 350	0 sec	17
18	9 000 000	130 000	23 300	0 sec	18
19	13 000 000	180 000	25 400	0 sec	19
20	45 000 000	600 000	27 400	0 sec	20

Defense | Walls

Targets Only Ground Units: Tower | Cannon | Ice Obelisk

Targets Only Air Units: Storm Spire | Protective Crystal

Targets Ground and Air Units: Gargoyle Tower | Ziggurat | Tower of Fire | Tower of Death | Minaret | Pyramid