Celestial Island Guide: Basic Information and Stats

Table of Contents

What is Celestial Island?

The Celestial Island is one of the main Idle Heroes which shouldn’t be ignored after level 30.

It is located at the top left of the main screen, right next to the Prophet Tree. All players have their own Celestial Islands.

On the Celestial Island, you can upgrade multiple buildings to get a lot of passive resources every day Magic Dust, Gold, Gems.

You can also attack the Monster Islands nearby for Stone of Voids, Gold, Monster Souls, Gems and even Universal Skin Shards If you are super lucky.

At the beginning, you start with the level 1 Watch Tower and 2 Empty Slots. Stone of Voids can be used to to upgrade buildings.

There are 2 kinds of Empty Slot:

Pit: For building up Mines (resource buildings), which produce over time.
Holy Terrace: For building up Holy Relics, which provide some specific boosts for your Island.

The whole island is controlled by a headquarter which is called the Watch Tower. By upgrading the Watch Tower, you increase the number of buildings you could have and their maximum levels, as well as increase the number of Monster Islands and their rewards.

For every 2 hours, you will receive a Purple Daffodil, which can be spent for a battle attack.

Watch Tower

As mentioned above, the Watch Tower is the headquarter, the main building of the Celestial Island.

The level of the Watch Tower defines the size of the Island.

By upgrading the Watch Tower, you can increase the number of buildings you can build, their max level, get more nearby monster islands, better rewards and better capacity for the Purple Daffodil.

In general, the max level of your buildings = the level of the Watch Tower x 2.

Watch Tower Level	Pit	Holy Terrace	Celestial Island	Daffodils Limit Cap	Upgrade Cost	Upgrade Cost
1	1	1	6	10	144K	13
2	1	1	6	10	208K	30
3	1	1	7	10	272K	44
4	1	2	7	10	336K	72
5	2	2	8	11	568K	118
6	2	2	8	11	856K	189
7	2	3	9	11	1144K	268
8	2	3	9	11	1432K	329
9	3	3	10	12	1720K	429
10	3	4	10	12	2512K	533
11	3	4	11	12	3472K	620
12	4	4	11	13	4432K	790
13	4	5	12	13	5392K	884
14	4	5	12	13	6352K	982
15	5	6	13	14	8752K	1143
16	5	6	13	14	11M	1317
17	5	7	14	14	14M	1436
18	6	7	14	15	17M	1561
19	6	8	15	15	20M	1698
20	6	8	15	15	–	–

Because the level of the monsters on those adjacent islands is based on your Watch Tower level, below is a table showing when you will face the stronger enemies and the rewards you will get from them.

Please note that the “enemies” contain both small islands and the big island, the Nest of Void.

I strongly recommend:

Checking the table below whenever you want to upgrade the Watch Tower to make sure your enemies will not get stronger.
Saving enough so that you can upgrade the Watch Tower and Holy Relics to the maximum of a level span.

For example, If your Tower level is 4, save enough Stone of Voids so that you can upgrade the Watch Tower to 7 and max out all of the damage boosting, HP boosting,… buildings. The enemy level will be still 120, the same as when the Watch Tower is at level 5.

Tower Level	Enemy Level	Boss Rewards	Island Rewards
1-4	70	18x 20x 54K	4x 5x 12K
5-7	120	21x 20x 72K	5x 5x 16K
8-10	160	24x 28x 90K	6x 7x 20K
11-13	180	27x 36x 108K	7x 9x 24K
14-16	200	30x 44x 126K	8x 11x 28K
17-18	250	33x 52x 144K	9x 13x 32K
19-20	300	36x 60x 162K	10x 15x 36K

Expedition

The Expedition part is where you can find all of the monsters and bosses located on Celestial Island.

There is always only one Boss Island (Nest of Void) and lots of small islands nearby. They are similar to Guild Boss or Marauder, meaning you can attack it multiple times until it is destroyed.

You can attack them by using the Purple Daffodils. Each attack costs one.

Whether you have defeated them or not, It takes 8 hours for the Nest of Void Boss to respawn and 6 hours for the small islands to reset.

A Small Island only gives out the rewards after you completely defeat it. However, you can receive the rewards for every time you attack the Nest of Void.

If you are super lucky, you will receive Universal Skin Shards after defeating level 180+ enemies.

Tower Level	Enemy Level	Boss Rewards	Island Rewards
1-4	70	18x 20x 54K	4x 5x 12K
5-7	120	21x 20x 72K	5x 5x 16K
8-10	160	24x 28x 90K	6x 7x 20K
11-13	180	27x 36x 108K	7x 9x 24K
14-16	200	30x 44x 126K	8x 11x 28K
17-18	250	33x 52x 144K	9x 13x 32K
19-20	300	36x 60x 162K	10x 15x 36K

Nest of Void (Boss)

Currently, there are 6 bosses in total which can be randomly called. They all have different abilities and stats.

Boss
Faction
Class	Mage	Mage	Assassin	Warrior	Mage	Priest
Ability	Reduce attack	Burn	High damage	Stun	Skill Damage	Counterattack

Mine Upgrade Priority

Gem Mine > Gold Mine > Magic Dust Mine

Resource Buildings (Mines)

There are three kinds of resource buildings and they all can be only built in the Pit.

The higher level your mine is, the more resources it can produce over time.

It always costs 12K and 50 to build a resource building at the first time.

Gem Mine

The Gem Mine produces Gold over time.

You can build no more than 2 Gem Mines.

Click Here For Details

Level	Capacity		Max Output Per Day	Gold	Stone of Void
1	11		21	18K	2
2	11		22	24K	2
3	12		23	30K	3
4	12		24	36K	5
5	12		25	42K	6
6	13		26	48K	8
7	13		27	54K	9
8	14		28	60K	13
9	14		29	66K	14
10	15		30	93K	20
11	15		31	120K	25
12	16		32	147K	30
13	16		33	174K	41
14	17		34	201K	47
15	17		35	228K	53
16	18		36	255K	60
17	18		37	282K	64
18	19		38	309K	78
19	19		39	336K	83
20	20		40	426K	95
21	20		41	516K	105
22	21		42	606K	112
23	21		43	696K	120
24	22		44	786K	144
25	22		45	876K	153
26	23		46	966K	161
27	23		47	1056K	170
28	24		48	1146K	180
29	24		49	1236K	189
30	25		50	1506K	198
31	25		51	1776K	231
32	26		52	2046K	241
33	26		53	2316K	252
34	27		54	2586K	264
35	27		55	2856K	275
36	28		56	3126K	286
37	28		57	3396K	298
38	29		58	3666K	312
39	29		59	3951K	325
40	30		60	N/A	N/A
		Total:		38M	4674

Gold Mine

The Gold Mine produces Gold over time. You can build no more than 2 Gold Mines.

Click Here For Details

Level	Capacity		Max Output Per Day	Gold	Stone of Void
1	172K		345K	18K	2
2	207K		414K	24K	2
3	241K		483K	30K	3
4	276K		552K	36K	5
5	311K		662K	42K	6
6	345K		691K	48K	8
7	380K		760K	54K	9
8	414K		829K	60K	13
9	449K		898K	66K	14
10	483K		967K	93K	20
11	501K		1002K	120K	25
12	518K		1036K	147K	30
13	535K		1071K	174K	41
14	552K		1105K	201K	47
15	570K		1140K	228K	53
16	587K		1174K	255K	60
17	604K		1209K	282K	64
18	622K		1244K	309K	78
19	639K		1278K	336K	83
20	656K		1313K	426K	95
21	673K		1347K	516K	105
22	691K		1382K	606K	112
23	708K		1416K	696K	120
24	725K		1451K	786K	144
25	743K		1486K	876K	153
26	760K		1520K	966K	161
27	777K		1554K	1056K	170
28	794K		1588K	1146K	180
29	812K		1624K	1236K	189
30	830K		1660K	1506K	198
31	847K		1694K	1776K	231
32	861K		1722K	2046K	241
33	878K		1756K	2316K	252
34	895K		1790K	2586K	264
35	912K		1824K	2856K	275
36	930K		1860K	3126K	286
37	947K		1894K	3396K	298
38	965K		1930K	3666K	312
39	982K		1964K	3951K	325
40	N/A		N/A	N/A	N/A
		Total:		38M	4674

Magic Dust Mine

The Magic Dust Mine produces Magic Dust over time. You can build no more than 2 Magic Dust Mines.

Click Here For Details

Level	Capacity		Max Output Per Day	Gold	Stone of Void
1	50		100	18K	2
2	60		120	24K	2
3	70		140	30K	3
4	80		160	36K	5
5	90		180	42K	6
6	100		200	48K	8
7	110		220	54K	9
8	120		240	60K	13
9	130		260	66K	14
10	140		280	93K	20
11	145		290	120K	25
12	150		300	147K	30
13	155		310	174K	41
14	160		320	201K	47
15	165		330	228K	53
16	170		340	255K	60
17	175		350	282K	64
18	180		360	309K	78
19	185		370	336K	83
20	190		380	426K	95
21	195		390	516K	105
22	200		400	606K	112
23	205		410	696K	120
24	210		420	786K	144
25	215		430	876K	153
26	220		440	966K	161
27	225		450	1056K	170
28	230		460	1146K	180
29	235		470	1236K	189
30	240		480	1506K	198
31	245		490	1776K	231
32	250		500	2046K	241
33	255		510	2316K	252
34	260		520	2586K	264
35	265		530	2856K	275
36	270		540	3126K	286
37	275		550	3396K	298
38	280		560	3666K	312
39	285		570	3951K	325
40	N/A		N/A	N/A	N/A
		Total:		38M	4674

Holy Relic Upgrade Priority

Vitality > Harvest > Tyrant > Red Moon > Swiftness

Holy Relics

There are 5 kinds of Holy Relics, which can only be built on the Holy Terraces.

Each kind grants a different boost for your Island.

The higher level they are, the more value they can boost.

It always costs 7000 and 30 to build a level 1 Holy Relic.

Holy Relic of Vitality

The Holy Relic of Vitality generates Purple Daffodil overtime, giving you more turns to raid the nearby monster islands.

You can only build one Holy Relic of Vitality.

Take a look at the table below to see the required time to generate speeds, capacities and upgrade costs!

Click Here For Details

Level	Total Bonus	Gold	Stone of Void
1	1%	10K	1
2	2%	14K	1
3	3%	17K	2
4	4%	21K	3
5	5%	24K	4
6	6%	28K	4
7	7%	31K	5
8	8%	35K	7
9	9%	38K	8
10	10%	54K	11
11	11%	70K	14
12	12%	85K	17
13	13%	101K	24
14	14%	117K	28
15	15%	133K	31
16	16%	148K	35
17	17%	164K	37
18	18%	180K	45
19	19%	196K	48
20	20%	248K	55
21	21%	301K	61
22	22%	353K	66
23	23%	406K	70
24	24%	458K	84
25	25%	511K	89
26	26%	563K	94
27	27%	616K	99
28	28%	668K	105
29	29%	721K	110
30	30%	878K	116
31	31%	1036K	135
32	32%	1193K	141
33	33%	1351K	147
34	34%	1508K	154
35	35%	1666K	161
36	36%	1823K	167
37	37%	1981K	174
38	38%	2138K	182
39	39%	2296K	191
40	40%	N/A	N/A
Total:		22M	2726

Holy Relic of Harvest

The Holy Relic of Harvest increases the generate speed of all resources buildings (by a certain %) on the Celestial Island. Each level increases the generate speed by 1%.

You can build only one Holy Relic of Harvest.

Click Here For Details

Level	Total Bonus	Gold	Stone of Void
1	1%	10K	1
2	2%	14K	1
3	3%	17K	2
4	4%	21K	3
5	5%	24K	4
6	6%	28K	4
7	7%	31K	5
8	8%	35K	7
9	9%	38K	8
10	10%	54K	11
11	11%	70K	14
12	12%	85K	17
13	13%	101K	24
14	14%	117K	28
15	15%	133K	31
16	16%	148K	35
17	17%	164K	37
18	18%	180K	45
19	19%	196K	48
20	20%	248K	55
21	21%	301K	61
22	22%	353K	66
23	23%	406K	70
24	24%	458K	84
25	25%	511K	89
26	26%	563K	94
27	27%	616K	99
28	28%	668K	105
29	29%	721K	110
30	30%	878K	116
31	31%	1036K	135
32	32%	1193K	141
33	33%	1351K	147
34	34%	1508K	154
35	35%	1666K	161
36	36%	1823K	167
37	37%	1981K	174
38	38%	2138K	182
39	39%	2296K	191
40	40%	N/A	N/A
Total:		22M	2726

Holy Relic of Tyrant

The Holy Relic of Tyrant boost the attack of your whole team when fighting on the Celestial Island only. Each level increases the attack power by 1%.

You can build up to 2 Holy Relic of Tyrants.

Click Here For Details

Level	Total Bonus	Gold	Stone of Void
1	1%	10K	1
2	2%	14K	1
3	3%	17K	2
4	4%	21K	3
5	5%	24K	4
6	6%	28K	4
7	7%	31K	5
8	8%	35K	7
9	9%	38K	8
10	10%	54K	11
11	11%	70K	14
12	12%	85K	17
13	13%	101K	24
14	14%	117K	28
15	15%	133K	31
16	16%	148K	35
17	17%	164K	37
18	18%	180K	45
19	19%	196K	48
20	20%	248K	55
21	21%	301K	61
22	22%	353K	66
23	23%	406K	70
24	24%	458K	84
25	25%	511K	89
26	26%	563K	94
27	27%	616K	99
28	28%	668K	105
29	29%	721K	110
30	30%	878K	116
31	31%	1036K	135
32	32%	1193K	141
33	33%	1351K	147
34	34%	1508K	154
35	35%	1666K	161
36	36%	1823K	167
37	37%	1981K	174
38	38%	2138K	182
39	39%	2296K	191
40	40%	N/A	N/A
Total:		22M	2726

Holy Relic of Swiftness

The Holy Relic of Swiftness boost the speed of your whole team when fighting on the Celestial Island only. Each level increases Speed by 1 point.

You can build up to 2 Holy Relic of Swiftness.

Click Here For Details

Level	Total Bonus	Gold	Stone of Void
1	1	10K	1
2	2	14K	1
3	3	17K	2
4	4	21K	3
5	5	24K	4
6	6	28K	4
7	7	31K	5
8	8	35K	7
9	9	38K	8
10	10	54K	11
11	11	70K	14
12	12	85K	17
13	13	101K	24
14	14	117K	28
15	15	133K	31
16	16	148K	35
17	17	164K	37
18	18	180K	45
19	19	196K	48
20	20	248K	55
21	21	301K	61
22	22	353K	66
23	23	406K	70
24	24	458K	84
25	25	511K	89
26	26	563K	94
27	27	616K	99
28	28	668K	105
29	29	721K	110
30	30	878K	116
31	31	1036K	135
32	32	1193K	141
33	33	1351K	147
34	34	1508K	154
35	35	1666K	161
36	36	1823K	167
37	37	1981K	174
38	38	2138K	182
39	39	2296K	191
40	40	N/A	N/A
Total:		22M	2726

Holy Relic of Red Moon

Holy Relic of Red Moon boost the Health of your whole team when fighting on the Celestial Island only. Each level increases Health by 1%.

You can build up to 2 Holy Relic of Red Moon.

Click Here For Details

Level	Total Bonus	Gold	Stone of Void
1	1	10K	1
2	2	14K	1
3	3	17K	2
4	4	21K	3
5	5	24K	4
6	6	28K	4
7	7	31K	5
8	8	35K	7
9	9	38K	8
10	10	54K	11
11	11	70K	14
12	12	85K	17
13	13	101K	24
14	14	117K	28
15	15	133K	31
16	16	148K	35
17	17	164K	37
18	18	180K	45
19	19	196K	48
20	20	248K	55
21	21	301K	61
22	22	353K	66
23	23	406K	70
24	24	458K	84
25	25	511K	89
26	26	563K	94
27	27	616K	99
28	28	668K	105
29	29	721K	110
30	30	878K	116
31	31	1036K	135
32	32	1193K	141
33	33	1351K	147
34	34	1508K	154
35	35	1666K	161
36	36	1823K	167
37	37	1981K	174
38	38	2138K	182
39	39	2296K	191
40	40	N/A	N/A
Total:		22M	2726

Infographic

Click on the image to get the bigger version

Celestial Island Guide: Basic Information and Stats

4.8 (96.67%) 36 votes

Show Comments

6 Comments

Ludvig Arnås
Just because I did the math I thought I’d share, going from a maxed out lvl 10 tower to a maxed out lvl 13 tower is 7875 Stones of Void. Including the 3 tower levels, 6 levels to each building on terrace and pit, as well as 26 levels on two new buildings you can now build.
- Eric Jim
  Thank you so much! I was browsing this website trying to find exactly what you posted. Looks like I’m gonna save up 7875 stones before I lvl up my tower.
  - Will Potter
    nice!
    - errore404
      And taking the tower from 13 to 16 means 14650 more stones 🙂
      - Will Potter
        true
- Will Potter
  Nice share. Thank you a lot buddy!

Celestial Island Guide: Basic Information and Stats

What is Celestial Island?

Watch Tower