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Dungeon Upgrades (also known as the Castle) improve your dungeon in various aspects. You can only upgrade one castle or skill tree aspect at a time.

It would be wise to upgrade Merchant as much as possible first before moving on to the others.

Gold Mine Capacity

Upgrade the Gold Mine to boost its max capacity.

Level Max Capacity Upgrade Cost Upgrade Time
1 3000 N/A N/A
2 4000 5,000 4 minutes
3 5000 10,000 30 minutes
4 6000 20,000 2 hours
5 6500 25,000 4 hours
6 7000 35,000 6 hours
7 7500 40,000 8 hours
8 8000 50,000 10 hours
9 8500 55,000 12 hours
10 9000 60,000 16 hours
11 9500 70,000 20 hours
12 10000 80,000 24 hours
13 10500 90,000 24 hours
14 11000 100,000 24 hours
15 11500 110,000 24 hours
16 12000 120,000 24 hours
17 12500 130,000 24 hours
18 13000 150,000 24 hours
19 13500 170,000 24 hours
20 14000 190,000 24 hours
21 14500 210,000 24 hours
22 15000 230,000 24 hours
23 15500 250,000 24 hours
24 16000 270,000 24 hours
25 16500 290,000 24 hours
26 17000 310,000 24 hours
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All upgrades.

Lock

Upgrade your Lock to increase the amount of fake keyholes it has. Brown takes 1 lock pick per lock, Purple takes 3, and Gold takes 6.

Note that it is highly recommended not to upgrade the Lock past 12 brown locks, due to many factors that are explained in the Trivia section below.

Level Amount Upgrade Cost Upgrade Time
1 4 brown N/A N/A
2 5 brown 4,000 4 minutes
3 6 brown 10,000 30 minutes
4 7 brown 25,000 2 hours
5 8 brown 40,000 4 hours
6 9 brown 55,000 6 hours
7 10 brown 65,000 8 hours
8 11 brown 80,000 10 hours
9 12 brown 90,000 12 hours
10 4 purple 70,000 (new prices) 16 hours
11 5 purple 80,000 20 hours
12 6 purple 90,000 24 hours
13 7 purple 130,000 24 hours
14 8 purple 140,000 24 hours
15 9 purple 150,000 24 hours
16 10 purple 170,000 24 hours
17 11 purple 190,000 24 hours
18 12 purple 210,000 24 hours
19 4 gold 230,000 24 hours
20 5 gold 250,000 24 hours
21 6 gold 270,000 24 hours
22 7 gold 290,000 24 hours
23 8 gold 310,000 24 hours
24 9 gold 330,000 24 hours
25 10 gold 350,000 24 hours
26 11 gold 370,000 24 hours
27 12 gold 390,000 24 hours

Lock Pick Capacity

Upgrade the Lock Picks to boost their max capacity.

Level Capacity Upgrade Cost Upgrade Time Lock Picks per Watched Ad
1 10 N/A N/A 2
2 11 7,000 4 minutes 2
3 12 14,000 30 minutes 2
4 13 25,000 2 hours 2
5 14 45,000 4 hours 3
6 15 60,000 6 hours 3
7 16 70,000 8 hours 3
8 18 80,000 10 hours 3
9 20 90,000 12 hours 3
10 22 100,000 16 hours 4
11 24 110,000 20 hours 4
12 26 120,000 24 hours 4
13 28 130,000 24 hours 5
14 30 140,000 24 hours 5
15 32 150,000 24 hours 5
16 34 170,000 24 hours 6
17 36 180,000 24 hours 6
18 38 190,000 24 hours 6
19 40 200,000 24 hours 6
20 42 220,000 24 hours 7
21 44 240,000 24 hours 7
22 46 260,000 24 hours 7
23 48 280,000 24 hours 8
24 50 300,000 24 hours 8
25 52 320,000 24 hours 8
26 54 340,000 24 hours 9
27 56 360,000 24 hours 9
28 58 380,000 24 hours 9
29 60 400,000 24 hours 9
30 62 400,000 24 hours 10
31 64 400,000 24 hours 10
32 66 400,000 24 hours 10

Gold Mine Speed

Upgrade the Gold Mine to increase its production speed (coins per hour).

Unlocking this upgrade requires a level 4 or higher Lock.

Level Production per Hour Upgrade Cost Upgrade Time
1 1,000 N/A N/A
2 1,200 15,000 2 hours
3 1,400 20,000 4 hours
4 1,600 25,000 6 hours
5 1,800 30,000 8 hours
6 2,000 35,000 10 hours
7 2,200 40,000 12 hours
8 2,400 45,000 16 hours
9 2,600 50,000 20 hours
10 2,800 60,000 24 hours
11 3,000 70,000 24 hours
12 3,200 80,000 24 hours
13 3,400 90,000 24 hours
14 3,600 100,000 24 hours
15 3,800 110,000 24 hours
16 4,000 120,000 24 hours
17 4,200 130,000 24 hours
18 4,400 150,000 24 hours
19 4,600 170,000 24 hours
20 4,800 190,000 24 hours
21 5,000 210,000 24 hours
22 5,200 230,000 24 hours
23 5,400 250,000 24 hours
24 5,600 270,000 24 hours
25 5,800 290,000 24 hours
26 6,000 310,000 24 hours

Lock Pick Speed

Upgrade the Lock Picks to boost their restoration speed (lock picks per hour).

Unlocking this upgrade requires a level 4 or higher Lock Pick Capacity.

Level Production per Hour Upgrade Cost Upgrade Speed
1 15 N/A N/A
2 16 15,000 2 hours
3 17 30,000 4 hours
4 18 40,000 6 hours
5 19 45,000 8 hours
6 20 50,000 10 hours
7 21 55,000 12 hours
8 22 60,000 16 hours
9 23 65,000 20 hours
10 24 70,000 24 hours
11 25 80,000 24 hours
12 26 90,000 24 hours
13 27 100,000 24 hours
14 28 110,000 24 hours
15 29 120,000 24 hours
16 30 140,000 24 hours
17 31 160,000 24 hours
18 32 180,000 24 hours
19 33 200,000 24 hours
20 34 220,000 24 hours
21 35 240,000 24 hours
22 36 260,000 24 hours
23 37 280,000 24 hours
24 38 300,000 24 hours
25 39 320,000 24 hours
26 40 340,000 24 hours
27 41 360,000 24 hours
28 42 380,000 24 hours
29 43 400,000 24 hours
30 44 400,000 24 hours
31 45 400,000 24 hours
32 46 400,000 24 hours

Gem Defense Chance

Upgrades will boost your chance to defend your gems from other players' attacks.

Unlocking this upgrade requires a level 4 or higher Gold Mine Speed.

Level Defense Chance Upgrade Cost Upgrade Time
1 0% N/A N/A
2 3% 50,000 2 hours
3 6% 60,000 4 hours
4 9% 70,000 8 hours
5 12% 80,000 10 hours
6 15% 100,000 12 hours
7 18% 120,000 14 hours
8 21% 140,000 16 hours
9 24% 160,000 20 hours
10 27% 180,000 24 hours
11 30% 190,000 24 hours
12 33% 200,000 24 hours
13 36% 210,000 24 hours
14 39% 220,000 24 hours
15 42% 230,000 24 hours
16 45% 240,000 24 hours
17 47% 260,000 24 hours
18 49% 280,000 24 hours
19 51% 300,000 24 hours
20 53% 320,000 24 hours
21 55% 340,000 24 hours
22 56% 360,000 24 hours
23 59% 380,000 24 hours
24 61% 400,000 24 hours
25 63% 420,000 24 hours
26 65% 440,000 24 hours

Skull Gold Bonus

Upgrades will allow you to receive more gold from collecting skulls left by other players.

Unlocking this upgrade requires a level 4 or higher Lock Pick Speed.

Level Gold per Skull Upgrade Cost Upgrade Time
1 50 N/A N/A
2 100 25,000 4 hours
3 150 30,000 8 hours
4 180 40,000 12 hours
5 210 50,000 16 hours
6 240 60,000 20 hours
7 270 70,000 24 hours
8 300 80,000 24 hours
9 330 90,000 24 hours
10 360 100,000 24 hours
11 380 120,000 24 hours
12 400 140,000 24 hours
13 420 160,000 24 hours
14 440 180,000 24 hours
15 460 200,000 24 hours
16 480 220,000 24 hours
17 500 240,000 24 hours
18 520 260,000 24 hours
19 540 280,000 24 hours
20 560 300,000 24 hours
21 580 320,000 24 hours
22 600 340,000 24 hours
23 620 360,000 24 hours
24 640 380,000 24 hours
25 660 400,000 24 hours
26 680 400,000 24 hours

Merchant

Upgrade your merchant skill to get better discounts on other upgrades (including itself).

The merchant upgrade does not affect trap upgrades.

Unlocking this upgrade requires a level 4 or higher Skull Gold Bonus.

Level Discount Upgrade Cost (Base Cost) Upgrade Time
1 0% N/A N/A
2 5% 250,000 (250,000) 4 hours
3 10% 237,500 (250,000) 8 hours
4 15% 225,000 (250,000) 12 hours
5 20% 255,000 (300,000) 16 hours
6 25% 240,000 (300,000) 20 hours
7 30% 225,000 (300,000) 24 hours
8 35% 245,000 (350,000) 24 hours
9 40% 227,501 (350,000) 24 hours
10 45% 240,000 (400,000) 24 hours
11 50% 220,001 (400,000) 24 hours

Trivia

  • Most players agree that the best order for maxing upgrades is: Merchant - Lock Pick Capacity - Lock Pick Speed - Skull Gold Bonus - Gold Mine Capacity - Gold Mine Speed - Lock.
    • If you are good at saving bases, it might be better to max out Skull Gold Bonus first.
    • If you are a very active player, the Gold Mine may be beneficial to upgrade since it provides the player with 144k gold every day at max level.
  • The Lock is recommended by many high level players to leave at low levels. This is for many reasons. The main reason maybe because they have hard bases, and leaving low levels will make raiders easier to get in, and leave them skulls.
    • A lower level lock means that the majority of players will break into your dungeon. Since a large portion of the player base is less experienced with the game, you are more likely to be attacked by a weaker player who will leave more skulls and steal less of your treasure. In contrast, higher level players often have more keys, so if you have a high level Lock they will be the players who will be breaking into your dungeon. Note that if you have good gems in your totem, you will be raided very soon, so you would rather have it be a weaker player than a more experienced one.
    • Farmers are players who intentionally break into brown doors to farm the orbs and potions that they drop. Often, they are not serious about stealing your gems and gold, so they will often not use potions/skill when raiding your base.
    • With less keys required to break into your dungeon, you will be raided more often. If you are a low levelled player, this means more skulls and more gold to focus on other upgrades.
    • The Lock takes a lot of time and gold to upgrade. This time and gold is better spent elsewhere, at least until you have maxed out your castle.

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