Red Bloon Equivalent (RBE)

Red Bloon Equivalent (RBE) is a new addition that debuted in Bloons Tower Defense 4. It displays how many Red Bloons would need to be popped to equal the amount of pops it would take to clear the current stage. So, for example, in the picture to the right fourteen pops are required to pass that particular Round. It also appears in Bloons TD 4 Expansion and Bloons Tower Defense 5. The lowest RBE in BTD4 is 11, the highest is 2,881,116 (Round 250 - no rounds were programmed after this). In BTD5, all freeplay rounds have a random RBE, while the lowest is 3 (Round 24).



Bloons Tower Defense 1 RBE's
Round 1: 12 (12 Red Bloons)

Round 2: 25 (25 Red Bloons)

Round 3: 34 (24 Red Bloons and 5 Blue Bloons)

Round 4: 58 (10 Red Bloons, 24 Blue Bloons)

Round 5: 80 (30 Red Bloons, 25 Blue Bloons)

Round 6: 45 (15 Green Bloons)

Round 7: 150 (75 Blue Bloons)

Round 8: 251 (115 Red Bloons, 68 Blue Bloons)

Round 9: 164 (49 Blue Bloons, 22 Green Bloons)

Round 10: 120 (40 Green Bloons)

Round 11: 96 (24 Yellow Bloons)

Round 12: 147 (30 Blue Bloons, 25 Green Bloon, 3 Yellow Bloons)

Round 13: 280 (40 Red Bloons, 75 Blue Bloons, 30 Green Bloons)

Round 14: 104 (26 Yellow Bloons)

Round 15: 240 (30 Blue Bloons, 60 Green Bloons)

Round 16: 400 (80 Blue Bloons, 80 Green Bloons)

Round 17: 390 (150 Blue Bloons, 30 Green Bloons)

Round 18: 250 (30 Blue Bloons, 26 Green Bloons, 28 Yellow Bloons)

Round 19: 276 (92 Green Bloons)

Round 20: 360 (40 Blue Bloons, 60 Yellow Bloons)

Round 21: 395 (10 Blue Bloons, 85 Green Bloons, 30 Yellow Bloons)

Round 22: 192 (48 Yellow Bloons)

Round 23: ?

Round 24: 340 (20 Blue Bloons, 60 Green Bloons, 30 Yellow Bloons)

Round 25: 440 (80 Green Bloons, 50 Yellow Bloons)

Round 26: 340 (85 Yellow Bloons)

Round 27: 180 (20 Black Bloons)

Round 28: 340 (40 Green Bloons, 55 Yellow Bloons)

Round 29: 680 (125 Yellow Bloons, 20 Black Bloons)

Round 30: 756 (252 Green Bloons)

Round 31: 447 (10 Blue Bloons, Green Bloons, 28 Black Bloons)

Round 32: 362 (25 Green Bloons, 20 Yellow Bloons, 23 Black Bloons)

Round 33: 600 (150 Yellow Bloons)

Round 34: 470 (35 Green Bloons, 35 Yellow Bloons, 25 Black Bloons)

Round 35: 723 (85 Green Bloons, 117 Yellow Bloons)

Round 36: 769 (118 Yellow Bloons, 33 Black Bloons)

Round 37: 531 (59 Black Bloons)

Round 38: 900 (225 Yellow Bloons)

Round 39: 860 (50 Red Bloons, 50 Blue Bloons, 50 Green Bloons, 50 Yellow Bloons, 40 Black Bloons)

Round 40: 720 (80 Black Bloons)

Round 41: 540 (20 Black Bloons, 40 White Bloons)

Round 42: 740 (50 Yellow Bloons, 30 Black Bloons, 30 White Bloons)

Round 43: 1,400 (152 Yellow Bloons, 48 Black Bloons, 40 White Bloons)

Round 44: 1,080 (120 Black Bloons)

Round 45: 1,125 (125 White Bloons)

Round 46: 1,320 (60 Yellow Bloons, 60 Black Bloons, 60 White Bloons)

Round 47: 1,310 (80 Yellow Bloons, 70 Black Bloons, 40 White Bloons)

Round 48: 1,648 (70 Yellow Bloons, 76 Black Bloons, 76 White Bloons)

Round 49: 1,777 (100 Yellow Bloons, 83 Black Bloons, 70 White Bloons)

Round 50: 1,800 (100 Black Bloons and 100 White Bloons)

Bloons Tower Defense 2 RBE's
Round 1: 12 (12 Red Bloons)

Round 2: 30 (30 Red Bloons)

Round 3: 31 (15 Red Bloons, 8 Blue Bloons)

Round 4: 58 (10 Red Bloons, 24 Blue Bloons)

Round 5: 78 (22 Red Bloons, 28 Blue Bloons)

Round 6: 58 (13 Red Bloons, 15 Green Bloons)

Round 7: 100 (50 Blue Bloons)

Round 8: 85 (27 Red Bloons, 29 Blue Bloons)

Round 9: 109 (32 Blue Bloons, 15 Green Bloons)

Round 10: 96 (32 Green Bloons)

Round 11: 80 (12 Green Bloons, 11 Yellow Bloons)

Round 12: 37 (1 Rainbow Bloon)

Round 13: 202 (22 Red Bloons, 42 Blue Bloons, 32 Green Bloons)

Round 14: 88 (22 Yellow Bloons)

Round 15: 105 (15 Green Bloons, 15 Yellow Bloons)

Round 16: 288 (54 Blue Bloons, 60 Green Bloons)

Round 17: 215 (40 Blue Bloons, 54 Green Bloons)

Round 18: 217 (30 Blue Bloons, 23 Green Bloons, 22 Yellow Bloons)

Round 19: 215 (75 Green Bloons)

Round 20: 19 (1 Lead Bloon)

Round 21: 344 (24 Blue Bloons, 40 Green Bloons, 44 Yellow Bloons)

Round 22: 200 (50 Yellow Bloons)

Round 23: 214 (20 Blue Bloons, 30 Green Bloons, 36 Yellow Bloons)

Round 24:

Round 25:

Round 26:

Round 27:

Round 28:

Round 29:

Round 30: 480 (120 Yellow Bloons)

Round 31:

Round 32:

Round 33: 495 (55 Black Bloons)

Round 34:

Round 35:

Round 36:

Round 37: 380 (20 Lead Bloons)

Round 38:

Round 39:

Round 40:

Round 41:

Round 42:

Round 43:

Round 44:

Round 45:

Round 46:

Round 47:

Round 48:

Round 49:

Round 50:

Bloons Tower Defense 3 RBE's
round 1: 14(14 Red Bloons)

round 2: 30(30 red bloons)

Round 3: 32(16 red, 8 blue)

Round 4: 58(10 red, 24 blue)

Round 5: 80(22 red, 29 blue)

Round 6: 55(10 red, 15 green)

Round 7: 100(50 Blue Bloons)

Round 8: 80(28 red, 26 blue)

Round 9: 109(32 blue, 15 green)

Round 10: 96 (32 Green Bloons)

Round 11: 80 (12 green, 11 yellow)

Round 12: 37 (1 Rainbow Bloon)

Round 13: 195 (21 red, 42 blue, 30 green)

Round 14: 97 (15 yellow, 1 rainbow)

Round 15: 120 (18 green, 22 yellow)

Round 16: 211 (9 blue, 35 green, 22 yellow)

Round 17: 275 (35 blue, 55 green, 10 yellow)

Round 18: 244 (30 blue, 28 green, 25 yellow)

Round 19: 235 (45 green, 25 yellow)

Round 20: 95 (5 Lead Bloons)

Round 21: 316 (10 blue, 40 green, 44 yellow)

Round 22: 200 (50 Yellow Bloons)

Round 23: 345 (35 green, 60 yellow)

Round 24: 348 (20 blue, 56 green, 45 yellow)

Round 25: 303 (42 yellow, 15 black)

Round 26: 801 (100 yellow, 15 black, 14 lead)

Round 27: 315 (35 Black Bloons)

Round 28: 315 (19 black, 16 White Bloons)

Round 29: 348 (12 black, 14 white, 6 lead)

Round 30: 320 (35 yellow, 20 black)

Round 31: 166 (2 Ceramic Bloons)

Round 32: 420 (20 yellow, 20 black, 20 white)

Round 33: 789 (60 black, 3 ceramic)

Round 34: 872 (40 yellow, 20 black, 20 white, 4 ceramic)

Round 35: 370 (10 Rainbow Bloons)

Round 36: 590 (10 yellow, 30 black, 10 white, 10 lead)

Round 37: 578 (1 M.O.A.B)

Round 38: 1,065 (50 yellow, 50 black, 5 ceramic)

Round 39: 1,220 (30 yellow, 20 black, 40 white)

Round 40: 820 (45 black, 10 lead, 10 rainbow, 5 ceramic)

Round 41: 853 (12 white, 10 lead, 15 rainbow)

Round 42: 1,480 (100 yellow, 50 black, 10 ceramic)

Round 43: 925 (25 lead, 25 rainbow, 5 ceramic)

Round 44: 1,748 (130 black, 1 M.O.A.B)

Round 45: 1,896 (100 white, 12 ceramic)

Round 46: 2,536 (40 lead, 32 rainbow, 8 ceramic)

Round 47: 2,726 (30 black, 40 white, 20 lead, 20 rainbow, 12 ceramic)

Round 48: 2,560 (30 black, 30 white, 30 lead, 40 rainbow)

Round 49: 3,510 (50 rainbow, 20 ceramic)

Round 50: 4,926 (15 lead, 50 rainbow, 15 ceramic, 2 M.O.A.B)

Bloons Tower Defense 4 RBE's
Round 1 RBE: 14 (14 Red Bloons)

Round 2 RBE: 30 (30 Red Bloons)

Round 3 RBE: 30 (20 Red Bloons, 5 Blue)

Round 4 RBE: 60 (30 Red Bloons, 15 Blue)

Round 5 RBE: 45 (5 Red Bloons, 20 Blue)

Round 6 RBE: 57 (15 Red Bloons, 15 Blue, 4 Green)

Round 7 RBE: 85 (20 Red Bloons, 25 Blue, 5 Green)

Round 8 RBE: 101 (10 Red Bloons, 20 Blue, 17 Green)

Round 9 RBE: 79 (10 Red Bloons, 12 Blue, 15 Green)

Round 10 RBE: 200 (100 Blue Bloons)

Round 11 RBE: 69 (5 Red Bloons, 10 Blue, 12 Green, 2 Yellow)

Round 12 RBE: 80 (15 Blue Bloons, 10 Green, 5 Yellow)

Round 13 RBE: 135 (20 Red Bloons, 25 Green, 10 Yellow)

Round 14 RBE: 150 (15 Red Bloons, 15 Blue, 15 Green, 15 Yellow)

Round 15 RBE: 120 (20 Red Bloons, 15 Green, 10 Yellow, 3 Pink)

Round 16 RBE: 137 (20 Green Bloons, 13 Yellow, 5 Pink)

Round 17 RBE: 182 (15 Green Bloons, 28 Yellow, 5 Pink)

Round 18 RBE: 240 (80 Green Bloons)

Round 19 RBE: 125 (5 Green Bloons, 10 Yellow, 14 Pink)

Round 20 RBE: 88 (8 Black Bloons)

Round 21 RBE: 80 (16 Pink Bloons)

Round 22 RBE: 99 (9 White Bloons)

Round 23 RBE: 121 (6 Black Bloons, 5 White)

Round 24 RBE: 11 (1 Camo Bloon)*

Round 25 RBE: 138 (6 Zebra Bloons)

Round 26 RBE: 167 (10 Yellow Bloons, 10 Pink, 4 Black, 3 White)

Round 27 RBE: 400 (100 Yellow Bloons)

Round 28 RBE: 230 (3 Zebra Bloons, 7 Lead)

Round 29 RBE: 350 (70 Pink Bloons)

Round 30 RBE: 230 (10 Lead Bloons)

Round 31 RBE: 414 (18 Zebra Bloons)

Round 32 RBE: 789 (25 Black Bloons, 30 White, 8 Lead)

Round 33 RBE: 450 (50 Camo Bloons)

Round 34 RBE: 322 (14 Zebra Bloons)

Round 35 RBE: 826 (35 Pink Bloons, 25 White, 8 Rainbow)

Round 36 RBE: 450 (90 Pink Bloons)

Round 37 RBE: 1130 (20 Black Bloons, 20 White, 15 Zebra, 15 Lead)

Round 38 RBE: 1612 (20 White Bloons, 16 Zebra, 20 Lead, 12 Rainbow)

Round 39 RBE: 2174 (10 Black Bloons, 10 White, 20 Zebra, 20 Lead, 22 Rainbow)

Round 40 RBE: 902 (20 Red Bloons, 10 Rainbow, 4 Ceramic)

Round 41 RBE: 1760 (80 Black Bloons, 80 White)

Round 42 RBE: 2330 (40 Lead Bloons, 30 Rainbow)

Round 43 RBE: 1500 (10 Rainbow Bloons, 10 Ceramic)

Round 44 RBE: 1765 (30 White Bloons, 40 Zebra, 5 Ceramic)

Round 45 RBE: 2359 (200 Pink Bloons, 8 Lead, 25 Rainbow)

Round 46 RBE: 613 (1 M.O.A.B.)

Round 47 RBE: 2690 (70 Camo Bloons, 20 Ceramic)

Round 48 RBE: 3430 (120 Camo Bloons, 50 Rainbow)

Round 49 RBE: 3908 (10 Camo Bloons, 20 Zebra, 32 Rainbow, 18 Ceramic)

Round 50 RBE: 3490 (20 Red Bloons, 8 Lead, 20 Ceramic, 2 M.O.A.B.)

Round 51 RBE: 3354 (10 Rainbow Bloons, 28 Ceramic)

Round 52 RBE: 3431 (25 Rainbow Bloons, 10 Ceramic, 2 M.O.A.B.)

Round 53 RBE: 2913 (11 Red Bloons, 50 Camo, 4 M.O.A.B.)

Round 54 RBE: 4831 (35 Ceramic Bloons, 2 M.O.A.B.)

Round 55 RBE: 4726 (12 Lead Bloons, 40 Rainbow, 19 Ceramic, 1 M.O.A.B.)

Round 56 RBE: 8828 (120 Rainbow Bloons, 25 Ceramic, 1 M.O.A.B.)

Round 57 RBE: 5877 (40 Rainbow Bloons, 15 Ceramic, 4 M.O.A.B.)

Round 58 RBE: 5074 (25 Rainbow Bloons, 20 Ceramic, 3 M.O.A.B.)

Round 59 RBE: 5150 (50 Ceramic Bloons)

Round 60 RBE: 2884 (1 B.F.B.)

Round 61 RBE: 4970 (40 Rainbow Bloons, 30 Ceramic)

Round 62 RBE: 3026 (200 Camo Bloons, 2 M.O.A.B.)

Round 63 RBE: 6575 (18 Lead Bloons, 50 Rainbow, 37 Ceramic)

Round 64 RBE: 4291 (7 M.O.A.B.)

Round 65 RBE: 7936 (100 Zebra Bloons, 50 Rainbow, 20 Ceramic, 2 M.O.A.B.)

Round 66 RBE: 5517 (9 M.O.A.B.)

Round 67 RBE: 7703 (28 Red Bloons, 15 Ceramic, 10 M.O.A.B.)

Round 68 RBE: 5350 (14 Red Bloons, 4 M.O.A.B., 1 B.F.B.)

Round 69 RBE: 10990 (30 Lead Bloons, 100 Ceramic)

Round 70 RBE: 11239 (200 Rainbow Bloons, 3 M.O.A.B.)

Round 71 RBE: 9220 (30 Ceramic Bloons, 10 M.O.A.B.)

Round 72 RBE: 5798 (30 Red Bloons, 2 B.F.B.)

Round 73 RBE: 7219 (44 Red Bloons, 7 M.O.A.B., 1 B.F.B.)

Round 74 RBE: 23484 (200 Ceramic Bloons, 1 B.F.B.)

Round 75 RBE: 11,762 (14 Red Bloons, 28 Lead, 4 M.O.A.B., 3 B.F.B.)

Round 76 RBE: 9936

Round 77 RBE: 8863

Round 78 RBE: 9914

Round 79 RBE: 9310

Round 80 RBE: 15600

Round 81 RBE: 20532

Round 82 RBE: 39008

Round 83 RBE: 32499

Round 84 RBE: 39191

Round 85 RBE: 28884

Round 86 RBE: 44769

Round 87 RBE: 54517

Round 88 RBE: 77608

Round 89 RBE: 99712

Round 90 RBE: 117925

Round 91 RBE: 108656

Round 92 RBE: 155474

Round 93 RBE: 153993

Round 94 RBE: 177353

Round 95 RBE: 228099

Round 96 RBE: 219705

Round 97 RBE: 236,422

Round 98 RBE: 337755

Round 99 RBE: 359,352

Round 100 RBE: 240,182

Round 101 RBE: 337755

Round 102 RBE: 312,641

...

Round 113 RBE: 691,298

...

Round 117 RBE: 1,273,306

Round 118 RBE: 1,144,996

Round 119 RBE: 873,717

Round 120 RBE: 1,070,475

Round 121 RBE: 1,184,752

Round 122 RBE: 1,186,467

Round 123 RBE: 1,433,803

Round 124 RBE: 1,105,921

Round 125 RBE: 1,431,622

Round 126 RBE: 1,578,371

Round 127 RBE: 1,504,070

...

Round 250 RBE: 2,881,116 (999 B.F.B.'s)

(Rounds after 250 are not programmed on this game.)

Bloons Tower Defense 5 RBE's
Round 1 RBE: 20 (20 Red Bloons)

Round 2 RBE: 30 (30 Red Bloons)

Round 3 RBE: 30 (20 Red, 5 Blue Bloons)

Round 4 RBE: 60 (30 Red Bloons, 15 Blue)

Round 5 RBE: 55 (5 Red Bloons, 25 Blue)

Round 6 RBE: 57 (15 Red Bloons, 15 Blue, 4 Green Bloons)

Round 7 RBE: 85 (20 Red Bloons, 25 Blue, 5 Green)

Round 8 RBE: 92 (10 Red Bloons, 20 Blue, 14 Green)

Round 9 RBE: 90 (30 Green Bloons)

Round 10 RBE: 204 (102 Blue Bloons with dense final rush)

Round 11 RBE: 74 (10 Red Bloons, 10 Blues, 12 Greens, 2 Yellow Bloons)

Round 12 RBE: 80 (15 Blue, 10 Green, 5 Yellow)

Round 13 RBE: 185 (100 Red, 23 Green, 4 Yellow)

Round 14 RBE: 145 (49 Red, 15 Blue, 10 Green, 9 Yellow)

Round 15 RBE: 91 (20 Red, 12 Green, 5 Yellow, 3 Pink Bloons)

Round 16 RBE: 112 (20 Green, 8 Yellow, 4 Pink)

Round 17 RBE: 32 (8 Yellow Regrowth Bloons)

Round 18 RBE: 240 (80 Green)

Round 19 RBE: 101 (10 Green, 4 Yellow, 5 Yellow Regrowth, 7 Pink)

Round 20 RBE: 66 (6 Black Bloons)

Round 21 RBE: 70 (14 Pink)

Round 22 RBE: 88 (8 White Bloons)

Round 23 RBE: 99 (5 Black, 4 White)

Round 24 RBE: 3 (1 Green Camo Bloon)

Round 25 RBE: 124 (31 Yellow Regrowth)

Round 26 RBE: 207 (23 Pink, 4 Zebra Bloons)

Round 27 RBE: 545 (120 Red, 55 Blue, 45 Green, 45 Yellow)

Round 28 RBE: 92 (4 Lead Bloons)

Round 29 RBE: 160 (25 Yellow, 12 Pink Regrowth)

Round 30 RBE: 207 (9 Lead)

Round 31 RBE: 230 (8 Zebra, 2 Zebra Regrowth)

Round 32 RBE: 767 (25 Black, 28 White, 8 Lead)

Round 33 RBE: 80 (20 Yellow Camo)

Round 34 RBE: 675 (140 Yellow, 5 Zebra)

Round 35 RBE: 685 (35 Pinks, 25 White, 5 Rainbow Bloons)

Round 36 RBE: 405 (81 Pink)

Round 37 RBE: 1092 (20 Black, 20 White, 7 White Camo, 15 Lead, 10 Zebra)

Round 38 RBE: 1137 (42 Pink Regrowth Bloons, 17 White, 14 Lead, 10 Zebra, 4 Rainbow)

Round 39 RBE: 1986 (10 Black, 10 White, 20 Lead, 20 Zebra, 18 Rainbow)

Round 40 RBE: 886 (10 Rainbow, 4 Ceramic Bloons)

Round 41 RBE: 2040 (60 Black, 60 Zebra)

Round 42 RBE: 564 (6 Rainbow Camo, 6 Rainbow Regrowth)

Round 43 RBE: 1198 (10 Rainbow, 7 Ceramic)

Round 44 RBE: 1150 (50 Zebra)

Round 45 RBE: 2359 (200 Pink, 8 Lead, 25 Rainbow)

Round 46 RBE: 616 (1 M.O.A.B.)

Round 47 RBE: 1598 (70 Pink Camo, 12 Ceramic)

Round 48 RBE: 2950 (120 Pink Regrowth, 50 Rainbow)

Round 49 RBE: 4771 (343 Green, 20 Zebra, 20 Rainbow, 10 Rainbow Regrowth, 18 Ceramic)

Round 50 RBE: 3516 (20 Red, 8 Lead, 20 Ceramic, 2 M.O.A.B)

Round 51 RBE: 3382 (10 Rainbow Regrowth, 28 Ceramic)

Round 52 RBE: 3447 (25 Rainbow, 10 Ceramic, 2 M.O.A.B)

Round 53 RBE: 2248 (80 Pink Camo, 3 M.O.A.B)

Round 54 RBE: 4872 (35 Ceramic, 2 M.O.A.B)

Round 55 RBE: 5296 (45 Ceramic, 1 M.O.A.B)

Round 56 RBE: 2496 (40 Rainbow Regrowth, 1 M.O.A.B)

Round 57 RBE: 4344 (40 Rainbow, 4 M.O.A.B)

Round 58 RBE: 6096 (29 Ceramic, 5 M.O.A.B)

Round 59 RBE: 5844 (28 Lead Camo, 50 Ceramic)

Round 60 RBE: 3164 (1 B.F.B.)

Round 61 RBE: 6530 (150 Zebra Regrowth, 5 M.O.A.B)

Round 62 RBE: 5901 (300 Pink Camo, 15 Rainbow Camo Regrowth, 6 M.O.A.B)

Round 63 RBE: 14413 (75 Lead, 122 Ceramic)

Round 64 RBE: 5544 (9 M.O.A.B)

Round 65 RBE: 18966 (100 Zebra, 70 Rainbow, 50 Ceramic, 3 M.O.A.B, 2 B.F.B)

Round 66 RBE: 7392 (12 M.O.A.B)

Round 67 RBE: 7720 (15 Ceramic, 10 M.O.A.B)

Round 68 RBE: 5628 (4 M.O.A.B, 1 B.F.B)

Round 69 RBE: 8660 (60 Lead, 70 Ceramic Regrowth)

Round 70 RBE: 11864 (200 Rainbow Camo, 4 M.O.A.B)

Round 71 RBE: 9280 (30 Ceramic, 10 M.O.A.B)

Round 72 RBE: 10280 (38 Ceramic Regrowth, 2 B.F.B)

Round 73 RBE: 11872 (9 M.O.A.B, 2 B.F.B)

Round 74 RBE: 23964 (200 Ceramic, 1 B.F.B)

Round 75 RBE: 12600 (28 Lead, 4 M.O.A.B, 3 B.F.B)

Round 76 RBE: 6240 (60 Ceramic Regrowth)

Round 77 RBE: 24444 (14 M.O.A.B, 5 B.F.B)

Round 78 RBE: 25502 (150 Rainbow, 75 Ceramic, 72 Ceramic Camo, 1 B.F.B)

Round 79 RBE: 45648 (500 Rainbow Regrowth, 7 B.F.B)

Round 80 RBE: 19096 (31 M.O.A.B)

Round 81 RBE: 28476 (9 B.F.B)

Round 82 RBE: 50440 (400 Rainbow Camo Regrowth, 10 B.F.B)

Round 83 RBE: 34080 (150 Ceramic, 30 M.O.A.B)

Round 84 RBE: 62440 (50 M.O.A.B, 10 B.F.B)

Round 85 RBE: 16656 (1 Z.O.M.G.)

'''Rounds from Round 86 and over have random RBE's and bloons. They will be Ceramics, M.O.A.B.s, B.F.B.s and Z.O.M.G.s. Ceramics will never be camo or regrowth.''' Apopalypse Mode ends at round 400, however, other modes go to an infinite number of rounds.

Trivia

 * In Bloons TD 4, the RBE of the Camo Bloon in Round 24 should be 11, yet the in-game RBE says 9.
 * The lowest RBE (As of now) Is 3, the green camo on round 24 in Bloons TD 5.
 * In BTD5, round 84 can be harder and easier than 85, depending on your strategy. (For example, if you have many Glaive Lords, then Round 84 will be easier, but if you are using things that aim for only one or 2 Bloons, then Round 85 will be easier.
 * In BTD5, some Daily Challenges change the RBE.
 * In BTD5, Rounds 36 and 21 are the only levels that only have pink bloons.
 * In BTD4, Round 72 has only red bloons, if you say B.F.Bs are red.