Black Hole

Black Hole Ultimate Weapon

Black Hole is an Ultimate Weapon that creates a Black Hole on a time interval that lasts a period of time that sucks enemies in.

Use

Black hole is one of the best Ultimate Weapons in the game and works great in combination with Golden Tower with synced activation time.

Black hole distance from the tower is determined by tower range. Larger tower ranges will move the black hole further away from the tower. Black hole distance increases faster than tower range meaning the center of black hole will move further away from the tower range line as range increases.

Black Hole Coin Farming

Black hole has research that adds a multiplier to coins for enemies killed inside of black hole (Coin Bonus). By itself maxed out at 10x coins earned. Since you can make your black hole cooldown match Golden Tower cooldown, you can have both effects happen at the same time. If Golden Tower has a 10x coins effect and is active any kills give 10x coins, when synced with Black Hole and activated at the same time any enemies killed inside your black hole would give 100x because of multiplication effect.

There are more options to boost Coin Gain, like stack the coin bot on top of this (but they are random, can't be depended on to be consistent), Spotlight also has research for up to 3x, which also stacks (so in our 100x above, it spotlight would happen to also be on the it's 300x), Death Wave coin bonuses and so on.

Workshop

Basic Upgrades

Black Hole Basic Upgrades are Located in the Ultimate Weapon menuafter unlocking the Ultimate Weapon. Unlocking Black Hole allows the player to upgrade Size, Duration and Cooldown using stones.

Size 20 has levels, Duration has 23 levels and Cooldown has 15 levels. The total stone cost is 9,723.

Size	Stones (Size)	Duration	Stones (Duration)	Cooldown	Stones (Cooldown)
30m	0	15s	0	200s	0
32m	5	16s	5	190s	10
34m	12	17s	14	180s	28
36m	19	18s	23	170s	46
38m	26	19s	32	160s	64
40m	34	20s	41	150s	82
42m	43	21s	50	140s	100
44m	53	22s	59	130s	118
46m	64	23s	68	120s	136
48m	76	24s	77	110s	154
50m	89	25s	86	100s	172
52m	103	26s	95	90s	190
54m	118	27s	104	80s	208
56m	134	28s	113	70s	226
58m	151	29s	122	60s	244
60m	169	30s	131	50s	262
62m	189	31s	165
64m	211	32s	224
66m	236	33s	308
68m	264	34s	417
70m	295	35s	551
		36s	710
		37s	894
		38s	1103
Total	2291		5392		2040

Ultimate Weapon Plus - Consume

Each Black Hole deals a multiple of the current wave HP to every enemy affected at the end of its activation.

UW+ Cost Table
Level	0	1	2	3	4	5	6	7	8	9	10
Cost	Unlocked	400	500	610	730	860	1000	1150	1200	1500	1700
Value	0.05x	0.10x	0.15x	0.20x	0.25x	0.30x	0.35x	0.40x	0.45x	0.50x	0.55x

Labs

There are variety of Labs research that provides Black Hole additional bonuses and adds additional features to it's attacks and effects.

Black Hole Damage

Lab Ultimate Weapon Research Unlocks at Tier 5 Wave 150 Milestone. Black Hole will do a percent damage of enemy total health. Protectors do not reduce reduce damage from Black Hole. Has 10 levels.

Level	Time	Cost	Value
1	1d 15h 59m	20,000,000	0.20%
2	2d  0h 21m	20,810,000	0.40%
3	2d  8h 53m	21,850,000	0.60%
4	2d 17h 54m	24,050,000	0.80%
5	3d  3h 49m	29,500,000	1.00%
6	3d 15h  6m	41,790,000	1.20%
7	4d  4h 17m	66,330,000	1.40%
8	4d 19h 58m	110,660,000	1.60%
9	5d 14h 49m	184,660,000	1.80%
10	6d 13h 31m	300,870,000	2.00%

Black Hole Coin Bonus

Lab Ultimate Weapon Research Unlocks at Tier 5 Wave 150 Milestone. Coin Bonus for enemies killed in a Black Hole (multiplier to coins gained). Enemies do not need to be killed by Black Hole to be given this bonus.

Level	Time	Cost	Value
1	1d 15h 59m	20,000,000	1.50
2	2d  0h 21m	21,405,405	2.00
3	2d  8h 53m	23,124,324	2.50
4	2d 17h 54m	26,627,027	3.00
5	3d  3h 49m	35,837,838	3.50
6	3d 15h  6m	58,248,649	4.00
7	4d  4h 17m	106,162,162	4.50
8	4d 19h 58m	197,870,270	5.00
9	5d 14h 49m	358,875,676	5.50
10	6d 13h 31m	623,091,892	6.00
11	7d 16h 49m	1,030,000,000	6.50
12	9d  1h 30m	1,640,000,000	7.00
13	10d 16h 23m	2,520,000,000	7.50
14	12d 14h 21m	3,740,000,000	8.00
15	14d 20h 18m	5,410,000,000	8.50
16	17d 11h  9m	7,630,000,000	9.00
17	20d 11h 54m	10,520,000,000	9.50
18	23d 23h 32m	14,230,000,000	10.00
19	27d 23h  5m	18,930,000,000	10.50
20	32d 11h 40m	24,800,000,000	11.00

Extra Black Hole

Lab Ultimate Weapon Research Unlocks at Tier 5 Wave 500 Milestone. A 2nd black hole will spawn when Black Hole is active. The 2nd black hole will always spawn on the opposite side of the tower. The 2nd black hole has the same stats and abilities of the original black hole.

Level	Time	Cost	Value
1	17d  8h 39m	15,000,000,000	Unlocked

Black Hole Disable Ranged Enemies

Lab Ultimate Weapon Research Unlocks at Tier 14 Wave 20 Milestone. Ranged enemies inside Black Holes will not be able to fire even when in range.

Level	Time	Cost	Value
1	25d  9h 9m	550,000,000,000	Unlocked

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