Experience Points

XP bar in BTD5

Experience Points, or XP, are a value to describe a player's progress in the Bloons Tower Defense games. In Bloons TD 4 and Bloons TD 5 it is awarded for popping Bloons. The player gets 1 XP point per 1 Bloon popped but the XP gained for popping bloons is not equal to RBE. For example, reducing M.O.A.B. to Ceramic Bloons takes 200 hits so 200 points to RBE but since it only registers as a pop, the player will only receive a single XP point. The player gets a new Rank when they reach certain amounts of XP.

In BTD4, the bar showing how much XP you had also showed how many more bloons you had to pop before you go up a rank. In BTD5, the information is shown as pop up message when the player hovers the mouse over the XP bar. Bloons also give less XP starting at round 71.

BTD6 Heroes XP

Heroes gain a fixed amount of experience each round according to the formula for Tower XP. It does not matter how many Bloons they pop. The base heroes (Quincy, Gwendolin, Striker Jones, Obyn Greenfoot) and Etienne all require the same amounts of experience to level up. Other heroes require a certain multiple more XP compared to the base heroes.

• Ezili, Pat, and Brickell all require 1.425x more XP compared to the base heroes.
• Benjamin requires 1.5x more XP compared to the base heroes.
• Churchill requires 1.8x more XP compared to the base heroes.
• Adora also requires 1.8x more XP compared to the base heroes. However, using her "Blood Sacrifice" ability allows her to sacrifice a tower and gain 4x the money spent on the tower as XP.

Cost for Next Hero Level

Level	Base	x1.425	x1.5	x1.8
1	180	256	270	324
2	460	655	690	828
3	1000	1425	1500	1800
4	1860	2650	2790	3348
5	3280	4674	4920	5904
6	5180	7381	7770	9324
7	8320	11856	12480	14976
8	9380	13366	14070	16884
9	13620	19408	20430	24516
10	16380	23341	24570	29484
11	14400	20520	21600	25920
12	16650	23726	24975	29970
13	14940	21289	22410	26892
14	16380	23341	24570	29484
15	17820	25393	26730	32076
16	19260	27445	28890	34668
17	20700	29497	31050	37260
18	16470	23469	24705	29646
19	17280	24624	25920	31104
20	Max	Max	Max	Max

Cost for Next Hero Level with Max Knowledge

Level	Base	x1.425	x1.5	x1.8
1	N/A	N/A	N/A	N/A
2	N/A	N/A	N/A	N/A
3	900	1282	1350	1620
4	1674	2385	2511	3013
5	2952	4206	4428	5313
6	4662	6643	6993	8391
7	7488	10670	11232	13478
8	8442	12029	12663	15195
9	12258	17467	18387	22064
10	14742	21007	22113	26535
11	12960	18468	19440	23328
12	14985	21353	22477	26973
13	13446	19160	20169	24202
14	14742	21007	22113	26535
15	16038	22854	24057	28868
16	17334	24700	26001	31201
17	18630	26547	27945	33534
18	14823	21122	22234	26681
19	15552	22161	23328	27993
20	Max	Max	Max	Max

Bold lines represent levels where it requires LESS experience than the level before it.

Tower XP

BTD5

This is how much XP the bloons give in certain rounds:

• Rounds 1-70: Bloons give 100% XP
• Rounds 71+: Bloons give 30% XP

XP needed to unlock next upgrade

The player also gets Tower XP in BTD5 (with the same multiplier applied to bloons after round 70). The more money that is spent on a type of tower, the more Tower XP for the type of tower is gained. Certain amounts unlock new tower upgrades for each tower. Final upgrades must be unlocked also by reaching a certain Rank, such as the Ray of Doom. The path 1 upgrades usually require less XP than the path 2 ones (An exception is Arctic Wind).

XP for tower = (RBE for round) * (sell value for tower) / (sell value for all towers)

BTD6

Player's Crossbow upgrade can be purchasable given enough XP Points

In BTD6, the XP-gaining structure is different. Instead of automatically unlocking upgrades, the player gets to choose which upgrades can be unlocked for a tower. Each tower has a different set of XP collections, and more XP can be generated by using a certain tower more often.

Unlocking a tower with XP requires the previous upgrade tier to be unlocked, so for example, Very Quick Shots cannot be unlocked unless Quick Shots is also unlocked.

To see how much XP is required for each towers' upgrades, please see each respective towers' pages.

XP for towers in BTD6 is calculated in the following way. Each round has a set amount of XP that it gives, regardless of bloons popped. At the end of the round, this XP is added to your account and is split between the towers you have placed relative to the amount of money spent on each tower. for example, a defense of $100 ninja, $100 druid, and $200 alchemist on a round that gives 100 XP will give 25 XP to the ninja, 25 to the druid, and 50 to the alchemist. Heroes do not count as towers in this scenario.

Round 1 starts off with 40xp, and up until round 20 this amount increases by 20 each round (40xp, 60xp, 80xp, ...). Then on rounds 21-50 the amount experience gained each round increases by 40 each round (460xp, ,500xp, ...). And last, from round 51 up until round 100, this amount increases by 90 each round (1710xp, 1800xp, ...). Each map difficulty above beginner gives a 10% xp bonus, e.g. playing on expert gives you a 30% xp boost. Upon reaching freeplay mode, you gain 10% of the normal XP, although heroes will not be affected by the cut at this point.

XP in BTD4

Rank	Total XP	XP to next rank
1	0	10
2	10	40
3	50	150
4	200	200
5	400	400
6	800	400
7	1,200	400
8	1,600	600
9	2,200	1,300
10	3,500	1,500
11	5,000	2,500
12	7,500	4,500
13	12,000	6,000
14	18,000	7,000
15	25,000	10,000
16	35,000	15,000
17	50,000	20,000
18	70,000	25,000
19	95,000	30,000
20	125,000	30,000
21	155,000	40,000
22	195,000	45,000
23	240,000	45,000
24	285,000	50,000
25	335,000	55,000
26	390,000	60,000
27	450,000	50,000
28	500,000	50,000
29	550,000	50,000
30	600,000	100,000
31	700,000	100,000
32	800,000	100,000
33	900,000	100,000
34	1,000,000	100,000
35	1,100,000	100,000
36	1,200,000	100,000
37	1,300,000	100,000
38	1,400,000	100,000
39	1,500,000	100,000
40	1,600,000	100,000
41	1,700,000	100,000
42	1,800,000	100,000
43	1,900,000	100,000
44	2,000,000	100,000
45	2,150,000	150,000
46	2,300,000	150,000
47	2,450,000	150,000
48	2,600,000	150,000
49	2,750,000	150,000
50	2,900,000	200,000
51	3,100,000	200,000
52	3,300,000	200,000
53	3,500,000	200,000
54	3,700,000	200,000
55	3,900,000	200,000
56	4,100,000	250,000
57	4,350,000	250,000
58	4,600,000	250,000
59	4,850,000	250,000
60	5,100,000	300,000
61	5,400,000	300,000
62	5,700,000	300,000
63	6,000,000	300,000
64	6,300,000	300,000
65	6,600,000	300,000
66	6,900,000	300,000
67	7,200,000	300,000
68	7,500,000	500,000
69	8,000,000	1,000,000
70	9,000,000	1,000,000
71	10,000,000	1,000,000
72	11,000,000	2,000,000
73	13,000,000	3,000,000
74	16,000,000	4,000,000
75	20,000,000	10,000,000
76	30,000,000	30,000,000
77	60,000,000	40,000,000
78	100,000,000	40,000,000
79	140,000,000	40,000,000
80	180,000,000	40,000,000
81	220,000,000	40,000,000
82	260,000,000	40,000,000
83	300,000,000	100,000,000
84	400,000,000	200,000,000
85	600,000,000	400,000,000
86	1,000,000,000	1,000,000,000
87	2,000,000,000	1,000,000,000
88	3,000,000,000	2,000,000,000
89	5,000,000,000	3,000,000,000
90	8,000,000,000	7,000,000,000
91	15,000,000,000	15,000,000,000
92	30,000,000,000	970,000,000,000
93	1,000,000,000,000	9,999,000,000,000,000
94	10,000,000,000,000,000

The max rank is 94 by getting 10 quadrillion XP.

XP in BTD5

Rank	Total XP	XP to next rank
1	0	10
2	10	90
3	100	100
4	200	200
5	400	400
6	800	400
7	1,200	400
8	1,600	600
9	2,200	1,300
10	3,500	1,500
11	5,000	2,500
12	7,500	4,500
13	12,000	6,000
14	18,000	7,000
15	25,000	10,000
16	35,000	15,000
17	50,000	20,000
18	70,000	25,000
19	95,000	30,000
20	125,000	30,000
21	155,000	40,000
22	195,000	45,000
23	240,000	45,000
24	285,000	50,000
25	335,000	55,000
26	390,000	60,000
27	450,000	50,000
28	500,000	50,000
29	550,000	50,000
30	600,000	100,000
31	700,000	100,000
32	800,000	100,000
33	900,000	100,000
34	1,000,000	100,000
35	1,100,000	100,000
36	1,200,000	100,000
37	1,300,000	100,000
38	1,400,000	100,000
39	1,500,000	120,000
40	1,620,000	140,000
41	1,760,000	160,000
42	1,920,000	180,000
43	2,100,000	200,000
44	2,300,000	220,000
45	2,520,000	230,000
46	2,750,000	250,000
47	3,000,000	300,000
48	3,300,000	300,000
49	3,600,000	300,000
50	3,900,000	300,000
51	4,200,000	300,000
52	4,500,000	500,000
53	5,000,000	500,000
54	5,500,000	500,000
55	6,000,000	500,000
56	6,500,000	500,000
57	7,000,000	500,000
58	7,500,000	600,000
59	8,100,000	700,000
60	8,800,000	700,000
61	9,500,000	800,000
62	10,300,000	700,000
63	11,000,000	1,000,000
64	12,000,000	1,000,000
65	13,000,000	1,500,000
66	14,500,000	2,000,000
67	16,500,000	2,500,000
68	19,000,000	5,000,000
69	24,000,000	6,000,000
70	30,000,000	7,500,000
71	37,500,000	7,500,000
72	45,000,000	10,000,000
73	55,000,000	10,000,000
74	65,000,000	15,000,000
75	80,000,000	20,000,000
76	100,000,000	20,000,000
77	120,000,000	20,000,000
78	140,000,000	20,000,000
79	160,000,000	20,000,000
80	180,000,000	20,000,000
81	200,000,000	30,000,000
82	230,000,000	30,000,000
83	260,000,000	30,000,000
84	290,000,000	30,000,000
85	320,000,000	30,000,000
86	350,000,000	40,000,000
87	390,000,000	50,000,000
88	440,000,000	50,000,000
89	490,000,000	60,000,000
90	550,000,000	50,000,000
91	600,000,000	50,000,000
92	650,000,000	50,000,000
93	700,000,000	50,000,000
94	750,000,000	50,000,000
95	800,000,000	50,000,000
96	850,000,000	50,000,000
97	900,000,000	50,000,000
98	950,000,000	50,000,000
99	1,000,000,000	100,000,000
100	1,100,000,000	100,000,000
101	1,200,000,000	100,000,000
102	1,300,000,000	100,000,000
103	1,400,000,000	100,000,000
104	1,500,000,000	100,000,000
105	1,600,000,000	100,000,000
106	1,700,000,000	100,000,000
107	1,800,000,000	100,000,000
108	1,900,000,000	100,000,000
109	2,000,000,000	100,000,000
110	2,100,000,000	100,000,000
111	2,200,000,000	200,000,000
112	2,400,000,000	200,000,000
113	2,600,000,000	200,000,000
114	2,800,000,000	200,000,000
115	3,000,000,000	200,000,000
116	3,200,000,000	200,000,000
117	3,400,000,000	200,000,000
118	3,600,000,000	200,000,000
119	3,800,000,000	200,000,000
120	4,000,000,000	300,000,000
121	4,300,000,000	300,000,000
122	4,600,000,000	300,000,000
123	4,900,000,000	300,000,000
124	5,200,000,000	300,000,000
125	5,500,000,000	400,000,000
126	5,900,000,000	400,000,000
127	6,300,000,000	400,000,000
128	6,700,000,000	400,000,000
129	7,100,000,000	400,000,000
130	7,500,000,000	500,000,000
131	8,000,000,000	500,000,000
132	8,500,000,000	500,000,000
133	9,000,000,000	500,000,000
134	9,500,000,000	500,000,000
135	10,000,000,000	1,000,000,000
136	11,000,000,000	1,000,000,000
137	12,000,000,000	1,000,000,000
138	13,000,000,000	1,000,000,000
139	14,000,000,000	1,000,000,000
140	15,000,000,000	1,000,000,000
141	16,000,000,000	1,000,000,000
142	17,000,000,000	1,000,000,000
143	18,000,000,000	1,000,000,000
144	19,000,000,000	1,000,000,000
145	20,000,000,000	1,000,000,000
146	21,000,000,000	1,000,000,000
147	22,000,000,000	1,000,000,000
148	23,000,000,000	1,000,000,000
149	24,000,000,000	1,000,000,000
150	25,000,000,000	1,000,000,000
151	26,000,000,000	1,000,000,000
152	27,000,000,000	1,000,000,000
153	28,000,000,000	1,000,000,000
154	29,000,000,000	1,000,000,000
155	30,000,000,000	1,000,000,000
156	31,000,000,000	1,000,000,000
157	32,000,000,000	1,000,000,000
158	33,000,000,000	1,000,000,000
159	34,000,000,000	1,000,000,000
160	35,000,000,000	1,000,000,000
161	36,000,000,000	1,000,000,000
162	37,000,000,000	1,000,000,000
163	38,000,000,000	1,000,000,000
164	39,000,000,000	1,000,000,000
165	40,000,000,000	1,000,000,000
166	41,000,000,000	1,000,000,000
167	42,000,000,000	1,000,000,000
168	43,000,000,000	1,000,000,000
169	44,000,000,000	1,000,000,000
170	45,000,000,000	1,000,000,000
171	46,000,000,000	1,000,000,000
172	47,000,000,000	1,000,000,000
173	48,000,000,000	1,000,000,000
174	49,000,000,000	1,000,000,000
175	50,000,000,000	1,000,000,000
176	51,000,000,000	1,000,000,000
177	52,000,000,000	1,000,000,000
178	53,000,000,000	1,000,000,000
179	54,000,000,000	1,000,000,000
180	55,000,000,000	1,000,000,000
181	56,000,000,000	1,000,000,000
182	57,000,000,000	1,000,000,000
183	58,000,000,000	1,000,000,000
184	59,000,000,000	1,000,000,000
185	60,000,000,000	1,000,000,000
186	61,000,000,000	1,000,000,000
187	62,000,000,000	1,000,000,000
188	63,000,000,000	1,000,000,000
189	64,000,000,000	1,000,000,000
190	65,000,000,000	1,000,000,000
191	66,000,000,000	1,000,000,000
192	67,000,000,000	1,000,000,000
193	68,000,000,000	1,000,000,000
194	69,000,000,000	1,000,000,000
195	70,000,000,000	1,000,000,000
196	71,000,000,000	4,000,000,000
197	75,000,000,000	5,000,000,000
198	80,000,000,000	10,000,000,000
199	90,000,000,000	60,000,000,000
200	150,000,000,000

The max rank is 200 by getting 150 billion XP.

XP in BTD6

Rank	Total XP	XP to next rank
1	0	280
2	280	620
3	900	880
4	1,780	1,570
5	3,350	2,500
6	5,850	3,000
7	8,850	3,500
8	12,350	3,500
9	15,850	4,000
10	19,850	4,250
11	24,100	4,500
12	28,600	4,500
13	33,100	4,900
14	38,000	7,000
15	45,000	8,000
16	53,000	9,000
17	62,000	10,000
18	72,000	11,000
19	83,000	12,000
20	95,000	13,000
21	108,000	14,000
22	122,000	15,000
23	137,000	16,000
24	153,000	17,000
25	170,000	18,000
26	188,000	19,000
27	207,000	20,000
28	227,000	23,000
29	250,000	25,000
30	275,000	30,000
31	305,000	35,000
32	340,000	40,000
33	380,000	45,000
34	425,000	50,000
35	475,000	55,000
36	530,000	60,000
37	590,000	65,000
38	655,000	70,000
39	725,000	75,000
40	800,000	80,000
41	880,000	85,000
42	965,000	90,000
43	1,055,000	95,000
44	1,150,000	100,000
45	1,250,000	105,000
46	1,355,000	110,000
47	1,465,000	115,000
48	1,580,000	120,000
49	1,700,000	130,000
50	1,830,000	140,000
51	1,970,000	150,000
52	2,120,000	160,000
53	2,280,000	170,000
54	2,450,000	180,000
55	2,630,000	190,000
56	2,820,000	200,000
57	3,020,000	210,000
58	3,230,000	220,000
59	3,450,000	230,000
60	3,680,000	240,000
61	3,920,000	250,000
62	4,170,000	260,000
63	4,430,000	270,000
64	4,700,000	280,000
65	4,980,000	290,000
66	5,270,000	300,000
67	5,570,000	310,000
68	5,880,000	320,000
69	6,200,000	330,000
70	6,530,000	340,000
71	6,870,000	350,000
72	7,220,000	360,000
73	7,580,000	370,000
74	7,950,000	380,000
75	8,330,000	390,000
76	8,720,000	400,000
77	9,120,000	410,000
78	9,530,000	420,000
79	9,950,000	430,000
80	10,380,000	440,000
81	10,820,000	450,000
82	11,270,000	460,000
83	11,730,000	470,000
84	12,200,000	480,000
85	12,680,000	490,000
86	13,170,000	500,000
87	13,670,000	510,000
88	14,180,000	520,000
89	14,700,000	530,000
90	15,230,000	540,000
91	15,770,000	550,000
92	16,320,000	560,000
93	16,880,000	570,000
94	17,450,000	580,000
95	18,030,000	590,000
96	18,620,000	600,000
97	19,220,000	610,000
98	19,830,000	620,000
99	20,450,000	630,000
100	21,080,000	650,000
101	21,730,000	700,000
102	22,430,000	750,000
103	23,180,000	800,000
104	23,980,000	850,000
105	24,830,000	900,000
106	25,730,000	950,000
107	26,680,000	1,000,000
108	27,680,000	1,050,000
109	28,730,000	1,100,000
110	29,830,000	1,150,000
111	30,980,000	1,200,000
112	32,180,000	1,250,000
113	33,430,000	1,300,000
114	34,730,000	1,350,000
115	36,080,000	1,400,000
116	37,480,000	1,450,000
117	38,930,000	1,500,000
118	40,430,000	1,550,000
119	41,980,000	1,600,000
120	43,580,000	1,650,000
121	45,230,000	1,700,000
122	46,930,000	1,750,000
123	48,680,000	1,800,000
124	50,480,000	1,850,000
125	52,330,000	1,900,000
126	54,230,000	1,950,000
127	56,180,000	2,000,000
128	58,180,000	2,050,000
129	60,230,000	2,100,000
130	62,330,000	2,150,000
131	64,480,000	2,200,000
132	66,680,000	2,250,000
133	68,930,000	2,300,000
134	71,230,000	2,350,000
135	73,580,000	2,400,000
136	75,980,000	2,450,000
137	78,430,000	2,500,000
138	80,930,000	2,550,000
139	83,480,000	2,600,000
140	86,080,000	2,650,000
141	88,730,000	2,700,000
142	91,430,000	2,750,000
143	94,180,000	2,800,000
144	96,980,000	2,850,000
145	99,830,000	2,900,000
146	102,730,000	2,950,000
147	105,680,000	3,000,000
148	108,680,000	3,050,000
149	111,730,000	8,271,000
150	120,001,000	10,000,000
151	130,001,000	11,000,000
152	141,001,000	12,000,000
153	153,001,000	13,000,000
154	166,001,000	14,000,000
155	180,001,000

Maximum level is Level 155.

XP in BMC

See also: City Level

Experience Points tab with black message box of XP left to go.

In this game, players gain various amounts of XP by doing any of the following

• Capturing new tiles
• Building facilities/buildings in their town
• Buying upgrades for the towers in the upgrade buildings
• Completing quests

Some upgrades and buildings require a certain City Level (similar to rank in other BTD games) before being bought. Once the player gains enough XP, their city levels up.

Demolishing building leads to you being "in debt" to experience points. This cannot cause you to lose levels, and shows how much more you need to earn to start gaining experience again.

City Level	Total XP
1	0
2	100
3	250
4	500
5	900
6	1,500
7	2,350
8	3,500
9	5,000
10	6,900
11	9,250
12	12,100
13	15,500
14	19,500
15	24,150
16	29,500
17	35,600
18	42,500
19	50,250
20	58,900
21	68,500
22	79,100
23	90,750
24	103,500
25	117,400
26	132,500
27	148,550
28	166,500
29	185,500
30	205,900
31	227,750
32	251,100
33	276,000
34	302,500
35	330,650
36	360,500
37	392,100
38	425,500
39	460,750
40	497,900

BATTD

Level	Required XP	Total XP
1	N/A	0
2	150	150
3	150	300
4	150	450
5	300	750
6	300	1050
7	300	1350
8	300	1650
9	300	1950
10	300	2250
11	300	2550
12	330	2880
13	330	3210
14	330	3540
15	330	3870
16	330	4200
17	350	4550
18	350	4900
19	350	5250
20	350	5600
21	350	5950
22	380	6330
23	380	6710
24	380	7090
25	380	7470
26	380	7850
27	400	8250
28	450	8700
29	500	9200
30	550	9750
31	600	10,350
32	650	11,000
33	700	11,700
34	750	12,450
35	800	13,250
36	850	14,100
37	900	15,000
38	950	15,950
39	1000	16,950
40	1050	18,000
41	1100	19,100
42	1150	20,250
43	1200	21,450
44	1250	22,700
45	1300	24,000
46	1350	25,350
47	1400	26,750
48	1450	28,200
49	1500	29,700
50	1550	31,250
51	1600	32,850
52	1700	34,550
53	1800	36,350
54	1900	38,250
55	2000	40,250
56	2100	42,350
57	2200	44,550
58	2300	46,850
59	2400	49,250
60	2500	51,750
61	2600	54,350
62	2700	57,050
...	...	...
100	TBA	TBA

Tips

• In BTD5, the player can replay the Daily Challenges Third Time's A Charm (July 2nd, 2012), The Daring Dozen (January 27th 2014) or 20 Ceramics on the Wall (July 30th, 2012) to earn millions of Experience Points.
• In Freeplay Mode of BTD5, the amount of experience gained per popped bloon slowly goes down per round, gradually making it an ineffective way to gain experience.
• More information about gaining Experience Points quickly can be found in the Experience Point Farming article.

Trivia

• In BTD5, the maximum amount of XP is 179,995,343,055,540,813,000, while the player is still at Rank 200 with that amount. The amount needed to go to the next Rank (with the maximum amount) is -179,995,343,055,539,813,000.
  • This is due to an integer overflow.
• On the Daily Challenge 20 Ceramics on the Wall, the player can earn about 5000 XP by playing Rounds 1-70, then keep repeating to reach higher Ranks.