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The Prison allows a player to capture enemy Leaders with Level 10+ Castles. Execution wait times depends on the Leader Level; upgrade the building to reduce wait time. The Strix familiar's Quick Fix skill can reduce the wait time by up to an additional 6 hours. Once the wait time is over, the prisoner must be executed within 6 hours, or it will escape.

Steel Cuffs are needed to build and upgrade the Prison. There are 25 levels to upgrade, and the total of 20,000 are required to fully upgrade a Prison. Lv. 25 grants Capture boost. The Prison is a permanent building, meaning that once it has been built in a player's Turf, it cannot be demolished.

Upgrade Requirements & Results[]

Requirements Results
Level Required Orig. Time Execution Wait Time Reduction Bonus
1 Unlocked for free by clearing Kingdom Chapter 5-8: Skirmish 5, Battle of Gloria 15m 25
2 2 562 562 562 562 Manor Lv10 00:05:00 30m 50
3 5 843 843 843 843 Manor Lv10 00:10:00 1 Hour 75
4 12 1,265 1,265 1,265 1,265 Manor Lv10 00:20:00 2h 105
5 20 1,898 1,898 1,898 1,898 Manor Lv10 00:40:00 4h 147
6 30 2,847 2,847 2,847 2,847 Manor Lv10 01:20:00 6h 205
7 45 4,271 4,271 4,271 4,271 Manor Lv10 02:40:00 8h 288
8 60 6,407 6,407 6,407 6,407 Manor Lv10 05:20:00 10h 404
9 85 9,610 9,610 9,610 9,610 Manor Lv10 09:36:00 12h 565
10 100 14,416 14,416 14,416 14,416 Manor Lv10 15:21:36 14h 790
11 120 21,624 21,624 21,624 21,624 Manor Lv11 19:58:05 16h 1,107
12 150 32,436 32,436 32,436 32,436 Manor Lv12 22:57:48 18h 1,550
13 180 48,654 48,654 48,654 48,654 Manor Lv13 1d 02:24:28 20h 2,169
14 250 72,982 72,982 72,982 72,982 Manor Lv 14 1d 06:22:08 22h 3,037
15 340 109,473 109,473 109,473 109,473 Manor Lv 15 1d 10:55:27 24h 4,252
16 500 164,210 164,210 164,210 164,210 Manor Lv16 1d 16:09:47 1d 2h 5,953
17 700 246,315 246,315 246,315 246,315 Manor Lv17 1d 22:11:14 1d 4h 8,334
18 900 369,472 369,472 369,472 369,472 Manor Lv18 2d 05:06:55 1d 5h 11,668
19 1200 554,209 554,209 554,209 554,209 Manor Lv19 2d 13:04:58 1d 8h 16,334
20 1500 831,314 831,314 831,314 831,314 Manor Lv20 2d 22:14:42 1d 10h 22,869
21 1800 1,246,971 1,246,971 1,246,971 1,246,971 Manor Lv21 3d 19:19:07 1d 12h 32,016
22 2100 1,870,456 1,870,456 1,870,456 1,870,456 Manor Lv22 6d 02:06:35 1d 14h 44,822
23 2400 2,805,685 2,805,685 2,805,685 2,805,685 Manor Lv 23 10d 22:59:50 1d 16h 62,751
24 3000 4,208,528 4,208,528 4,208,528 4,208,528 Manor Lv24 19d 17:23:42 1d 18h 87,852
25 4500 8,417,056 8,417,056 8,417,056 8,417,056 Manor Lv25
Gold Hammer
69d 00:52:55 1d 20h 149,348
Total 20,000

Mana upgrade[]

Level Execution Wait Time Reduction Bonus Requirements Orig. Time
1 12m 32,856 10,100 89 2,525,116 Mana Manor Lv1
2            36,141                   15,100                             134         3,780,000
3            39,755                  22,700                            202        5,680,000
4
5
6

(Note: To upgrade to the next level, you need to build it 5 times at the current stage.)

Level 25 Bonus[]

Note: If there are multiple leaders currently in Prison Lv25, a player's Army ATK Boost is based on the max imprisoned Leader's level, and the percentages are not stacked.

Level Results
25 Troops gain an ATK boost if an Enemy Leader is imprisoned.
Imprisoned Leader's Level Army ATK Boost
1-24 1%
25-29 2%
30-34 3%
35-39 5%
40-44 8%
45-49 12%
50-54 17%
55-59 23%
60 30%

Tips[]

It is better to buy Steel Cuffs × 1000 for 10,000 Gems as opposed to buying a single Steel Cuff for 15 Gems. The same applies to Altar (Soul Crystals) and Battle Hall (War Tomes)

Other ways to earn small amounts of Steel Cuffs include Guild Bonus Chests when a guildmate buys Special Bundles, Guild Fest rewards, certain Vergeway: Verge Guardians stages and certain Kingdom Chapters.

Standard Buildings AcademyCastleEmbassyTrading PostVaultWatchtowerWorkshop
Advanced Buildings AltarBattle HallMana ChamberPrisonTreasure Trove
Resource Buildings FarmLumber MillLunar FoundryMana LodeMineQuarry
Military Buildings BarrackCastle WallInfirmaryManor
Familiar Buildings GymMonsterholdMystic SpireSpring