Dungeon Upgrades

Dungeon Upgrades (also known as the Castle and the Tree Upgrades) improve your dungeon in various aspects. You can only upgrade one castle or tree skill at a time unless you have the Builder Subscription

It would be wise to upgrade Merchant as possible first before moving on to the others as the combined cost for it will be 2.5mil coins but it will save 19mil coins combined from the other upgrades.

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	36 hours

Lock

Upgrade your Lock to increase the amount of fake keyholes it has. Wooden takes 1 lock pick per lock, Metal takes 3, and Golden takes Note that it is highly recommended not to upgrade the Lock past 12 Wooden locks, due to many factors that are explained in the Trivia section below.

Level	Amount	Upgrade Cost	Upgrade Time
1	4 Wooden	N/A	N/A
2	5 Wooden	15,000	4 minutes
3	6 Wooden	30,000	30 minutes
4	7 Wooden	40,000	2 hours
5	8 Wooden	45,000	4 hours
6	9 Wooden	50,000	6 hours
7	10 Wooden	55,000	8 hours
8	11 Wooden	60,000	10 hours
9	12 Wooden	65,000	12 hours
10	4 Metal	70,000	16 hours
11	5 Metal	80,000	20 hours
12	6 Metal	90,000	24 hours
13	7 Metal	130,000	24 hours
14	8 Metal	140,000	24 hours
15	9 Metal	150,000	24 hours
16	10 Metal	170,000	24 hours
17	11 Metal	190,000	24 hours
18	12 Metal	210,000	24 hours
19	4 Golden	230,000	24 hours
20	5 Golden	250,000	24 hours
21	6 Golden	270,000	24 hours
22	7 Golden	290,000	24 hours
23	8 Golden	310,000	24 hours
24	9 Golden	330,000	24 hours
25	10 Golden	350,000	24 hours
26	11 Golden	370,000	24 hours
27	12 Golden	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	1200	15,000	2 hours
3	1400	20,000	4 hours
4	1600	25,000	6 hours
5	1800	30,000	8 hours
6	2000	35,000	10 hours
7	2200	40,000	12 hours
8	2400	45,000	16 hours
9	2600	50,000	20 hours
10	2800	60,000	24 hours
11	3000	70,000	24 hours
12	3200	80,000	24 hours
13	3400	90,000	24 hours
14	3600	100,000	24 hours
15	3800	110,000	24 hours
16	4000	120,000	24 hours
17	4200	130,000	24 hours
18	4400	150,000	24 hours
19	4600	170,000	24 hours
20	4800	190,000	24 hours
21	5000	210,000	24 hours
22	5200	230,000	24 hours
23	5400	250,000	24 hours
24	5600	270,000	24 hours
25	5800	290,000	24 hours
26	6000	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	497,104	24 hours
31	45	499,999	24 hours
32	46	500,000	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.

For information on how this upgrade effects an opponent's chance to steal a gem, refer to this page.

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 castle upgrades (including itself).

The merchant upgrade does not affect Trap or Tree 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

Revitalizing Heartbeat

When upgraded, Revitalizing Heartbeat gives a thief a chance to regain health after a failed attempt to complete a dungeon.

The introduction of this in update 2.10 skill caused major controversies due to problems with max level gameplay. Previously, level 26 and above traps would force a Foreseer level 5 to 1 star after 7 deaths. With the introduction of this skill, even level 30 traps could not bring a Foreseer level 5 to 1 star after 7 deaths with one Revitalizing Heartbeat activation, and players could then use a Disable Trap potion to reach the chest with 1 trap active and 2 stars. This issue has been partially solved with the introduction of higher level traps in update 2.12.

Revitalizing Heartbeat can be upgraded from the skill tree. It costs Tears to upgrade.

• Revitalizing Heartbeat can be boosted to +30% chance for 1 Day for 1500 tears after hitting Level 42.

Level	Chance to Trigger	Cost	Time
1	N/A	N/A	N/A
2	5%	5	4h
3	5.5%	10	8h
4	6%	15	10h
5	6.5%	25	12h
6	7%	35	12h
7	7.5%	45	12h
8	8%	55	12h
9	8.5%	65	12h
10	9%	80	12h
11	9.5%	95	12h
12	10%	110	24h
13	10.5%	125	24h
14	11%	140	24h
15	11.5%	160	24h
16	12%	180	24h
17	12.5%	200	24h
18	13%	220	24h
19	13.5%	240	24h
20	14%	260	24h
21	14.5%	285	24h
22	15%	310	24h
23	15.5%	335	24h
24	16%	360	24h
25	16.5%	385	24h
26	17%	415	24h
27	17.5%	445	24h
28	18%	475	24h
29	18.5%	505	24h
30	19%	535	24h
31	19.5%	575	24h
32	20%	615	48h
33	20.5%	655	48h
34	21%	695	48h
35	21.5%	735	48h
36	22%	785	48h
37	22.5%	835	48h
38	23%	885	48h
39	23.5%	935	48h
40	24%	985	48h
41	24.5%	1035	48h
42	25%	1085	48h

Master Lock Picker

When upgraded, Master Lock Picker gives a thief a chance to keep lock picks after hitting the wrong keyhole.

Level	Chance to Trigger	Cost	Time
1	N/A	N/A	N/A
2	5%	5	4h
3	5.5%	10	8h
4	6%	15	10h
5	6.5%	25	12h
6	7%	35	12h
7	7.5%	45	12h
8	8%	55	12h
9	8.5%	65	12h
10	9%	80	12h
11	9.5%	95	12h
12	10%	110	24h
13	10.5%	125	24h
14	11%	140	24h
15	11.5%	160	24h
16	12%	180	24h
17	12.5%	200	24h
18	13%	220	24h
19	13.5%	240	24h
20	14%	260	24h
21	14.5%	285	24h
22	15%	310	24h
23	15.5%	335	24h
24	16%	360	24h
25	16.5%	385	24h
26	17%	415	24h
27	17.5%	445	24h
28	18%	475	24h
29	18.5%	505	24h
30	19%	535	24h
31	19.5%	575	24h
32	20%	615	48h
33	20.5%	655	48h
34	21%	695	48h
35	21.5%	735	48h
36	22%	785	48h
37	22.5%	835	48h
38	23%	885	48h
39	23.5%	935	48h
40	24%	985	48h
41	24.5%	1035	48h
42	25%	1085	48h

• Master Lock Picker can be boosted to +30% chance for 1 Day for 1500 tears after hitting level 42.

Strong Teeth

When upgraded, Strong Teeth gives a thief a chance to keep a totem tooth after a ritual.

Level	Chance to Trigger	Cost	Time
1	N/A	N/A	N/A
2	5%	5	4h
3	5.5%	10	8h
4	6%	15	10h
5	6.5%	25	12h
6	7%	35	12h
7	7.5%	45	12h
8	8%	55	12h
9	8.5%	65	12h
10	9%	80	12h
11	9.5%	95	12h
12	10%	110	24h
13	10.5%	125	24h
14	11%	140	24h
15	11.5%	160	24h
16	12%	180	24h
17	12.5%	200	24h
18	13%	220	24h
19	13.5%	240	24h
20	14%	260	24h
21	14.5%	285	24h
22	15%	310	24h
23	15.5%	335	24h
24	16%	360	24h
25	16.5%	385	24h
26	17%	415	24h
27	17.5%	445	24h
28	18%	475	24h
29	18.5%	505	24h
30	19%	535	24h
31	19.5%	575	24h
32	20%	615	48h
33	20.5%	655	48h
34	21%	695	48h
35	21.5%	735	48h
36	22%	785	48h
37	22.5%	835	48h
38	23%	885	48h
39	23.5%	935	48h
40	24%	985	48h
41	24.5%	1035	48h
42	25%	1085	48h

• Strong Teeth can be boosted to +30% chance for 2 Days for 2500 tears after hitting level 42.

Ritual Berserker

When upgraded, Ritual Berserker decreases ritual duration during a ritual after the player makes successful multiplayer attacks.

Level	Seconds Decreased	Cost	Time
1	N/A	N/A	N/A
2	120s	200	48h
3	180s	400	48h
4	240s	500	48h
5	300s	1000	48h
6	360s	1500	48h
7	420s	2000	48h
8	480s	2500	48h
9	540s	3000	48h
10	600s	4500	48h

• Ritual Berserker can be boosted to 700 seconds per attack for 1 Day for 3000 tears.

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.
  • While Merchant is important to max first, getting Lock Pick Capacity level 5 early is important for getting 3 lock picks per advertisement to save lots of time during attacks.
  • 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 Wooden 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.
• Revitalizing Heartbeat is widely considered the best ability to upgrade out of the 4 tear tree skills.
  • It will not trigger if the player suicides (restarts without hitting a trap) or once an attacker is at 0 health.