Alternate Bloons Rounds (also shortened as ABR) is a mode in Bloons TD 6. Players start on Round 3 and must beat Round 80, like Hard Mode. However, all rounds up to 100 are modified, stronger types of Bloons appear earlier, making it more challenging. For example, Camo Bloons appear on Round 5 as opposed to Round 24. Certain rounds get the Fortified property or have intentionally low RBE, to increase the overall difficulty.
Additionally, the game hints are replaced with sarcastic and mostly unhelpful comments, making it yet more difficult for players completing it for the first time.
Many of the rounds in Alternate Bloons Rounds feature waves of bloons that are substantially different to their corresponding non-ABR rounds. Most of the earlier rounds are mostly different, while later rounds typically modify their pre-existing round format. An example of this is ABR Round 63 using dense waves of Ceramics, Camo Ceramics, and MOABs, instead of just Ceramics in the normal Round 63.
Unless stated, assume that rounds have no income reductions per pop, and there are no health ramping or speed ramping for MOAB-class bloons. Bear in mind that Rounds 81+ modify normal Ceramics into Super Ceramics, which have 60 health (or 120 with Fortified) and release only one offspring per bloon below Ceramic.
First instances of types of bloons are in bold.
RoundSpawnsRBEIncomeFrom BloonsTotalCumulative110 Blues*0$0$751$751255 Reds*0$0$102$853315 Reds, 6 Blues, 5 Regrow Blues37$37$140$993410 Reds, 33 Blues76$76$180$1173512 Camo Reds, Camo Regrow Red, 15 Regrow Blues, 3 Greens52$52$157$1330610 Blues, 8 Greens, 5 Regrow Greens59$59$165$1495715 Camo Blues, 10 Regrow Blues, 6 Greens, 2 Blacks90$90$197$1692810 Yellows, 12 Greens, 3 Regrow Greens85$85$193$1885930 Regrow Greens90$90$199$20841022 Blues, 40 Greens, 2 Leads210$210$320$24041110 Blues, 10 Regrow Blues, 20 Greens, 3 Camo Greens109$109$220$26241220 Blues, 6 Regrow Greens, 3 Pinks73$73$185$28091350 Blues, 18 Yellows172$172$285$30941449 Reds, 10 Regrow Blues, 5 Camo Regrow Greens, 4 Regrow Yellows, 3 Blacks, White144$144$258$33521520 Blues, 15 Greens, 12 Yellows, 10 Pinks, 3 Purples216$216$331$36831615 Greens, 20 Camo Greens, 20 Regrow Greens165$165$281$39641712 Pinks60$60$177$41411830 Greens, 60 Yellows330$330$448$45891910 Blues, 5 Regrow Greens, 15 Pinks, 2 Blacks132$132$251$4840206 Regrow Blacks66$66$186$50262150 Reds, 4 Blues58$58$179$52052216 Purples176$176$298$5503237 Blacks, 6 Whites, 4 Leads235$235$358$586124Camo Lead23$23$147$60082522 Regrow Pinks, 10 Regrow Purples220$220$345$63532615 Blacks, 3 Zebras, 2 Rainbows328$328$454$680727100 Camo Reds, 60 Camo Blues, 45 Camo Greens, 45 Camo Yellows535$535$662$7469286 Regrow Leads138$138$266$77352950 Regrow Pinks, 8 Whites338$338$467$8202309 Camo Leads207$207$337$8539318 Regrow Blacks, 8 Camo Whites, 10 Zebras, 3 Regrow Zebras475$475$606$91453210 Purples, 5 Rainbows, 3 Ceramics657$630$762$99073320 Camo Reds, 13 Camo Blues46$46$179$1008634200 Greens, 6 Rainbows882$882$1016$111023525 Regrow Whites, 3 Ceramics, 25 Purples, 30 Camo Blacks1192$1165$1300$124023680 Camo Regrow Yellows, 10 Blacks, 2 Ceramics638$620$756$13158377 Regrow Blacks, 25 Whites, 25 Regrow Whites, 18 Leads, 10 Zebras1271$1271$1408$145663842 Purples, 17 Blacks, 14 Leads, 7 Rainbows, Regrow Ceramic1404$1395$1533$160993910 Camo Regrow Whites, 20 Zebras, 15 Rainbows, 2 Camo Rainbows1369$1369$1508$1760740Fortified MOAB856$381$521$181284160 Blacks, 70 Zebras2270$2270$2411$205394211 Camo Regrow Rainbows517$517$659$211984310 Rainbows, 2 MOABs1702$1232$1375$225734410 Fortified Leads, 40 Zebras1180$1150$1294$2386745120 Pinks, 10 Camo Purples, 4 Fortified Leads, 10 Ceramics1854$1752$1897$25764468 Fortified Ceramics912$760$906$266704770 Camo Regrow Pinks, 3 MOABs2198$1493$1640$283104830 Camo Regrow Purples, 80 Regrow Blacks, 15 Regrow Fortified Leads, 3 Fortified Ceramics1942$1840$1988$3029849300 Regrow Yellows, 10 Camo Zebras, 10 Camo Rainbows, 10 Regrow Rainbows, 14 Regrow Ceramics3826$3700$3849$34147508 Regrow Fortified Leads, 4 MOABs, 2 Fortified MOABs4384$2470$2620$367675110 Zebras, 28 Camo Fortified Ceramics3422$1445$1520$382875235 Rainbows, 5 Regrow Ceramics, 5 Fortified Ceramics, MOAB, Fortified MOAB4207$1678$1754$4004253120 Camo Pinks, 3 Fortified MOABs3168$871$948$409905435 Regrow Blacks, MOAB, BFB4165$1145$1222$422125520 Ceramics, 25 Camo Ceramics, Fortified MOAB5536$2328$2405$446185640 Camo Regrow Purples, 5 MOABs3520$1172$1250$458685725 Ceramics, 2 Fortified MOABs, BFB7476$2331$2409$482785815 Ceramics, 10 Regrow Fortified Ceramics, 10 MOABs8860$3092$3171$514495950 Camo Regrow Leads, 20 Camo Fortified Ceramics, 25 Rainbows4605$2112$2192$5364160Fortified BFB4824$762$842$544846150 Regrow Zebras, 15 Fortified Leads, 15 MOABs10780$1442$1474$5595862250 Purples, 15 Camo Regrow Fortified Leads, 5 Fortified MOABs, 2 BFBs13748$1610$1642$576006340 Ceramics, 30 Fortified Ceramics, 40 Camo Ceramics, 5 MOABs14820$2471$2503$60104646 Fortified MOABs, 2 BFBs11464$1067$1100$612046570 Rainbows, 50 Fortified Ceramics, 3 Fortified MOABs, 3 BFBs21050$2751$2784$63988666 MOABs, 3 BFBs13188$1372$1405$653946720 Camo Regrow Fortified Ceramics, 6 MOABs, 4 Fortified MOABs9400$1142$1175$66569684 MOABs, Fortified BFB7288$609$643$672136940 Camo Regrow Blacks, 40 Camo Regrow Purples, 50 Camo Ceramics6080$1126$1159$6837270200 Rainbows, 6 Fortified MOABs14536$2337$2371$707447130 Regrow Fortified Ceramics, 10 Fortified MOABs11980$1332$1366$721107238 Fortified Ceramics, BFB, Fortified BFB12320$1332$1366$73476738 Fortified MOABs, 2 Fortified BFBs16496$1219$1254$7473074100 Regrow Blacks, 25 Camo Regrow Fortified Ceramics, Fortified BFB8774$1000$1034$757657550 Leads, 14 Fortified Leads, 4 Fortified MOABs, 6 BFBs, 2 Fortified BFBs33570$3039$3074$788397610 BFBs31640$3050$3085$819257711 Fortified MOABs, 5 Fortified BFBs33536$2363$2398$843237880 Purples, 150 Zebras, 60 Fortified Ceramics, 72 Camo Ceramics, Fortified BFB23482$3679$3714$8803879500 Camo Rainbows, 4 Fortified BFBs, ZOMG59452$7140$7176$95214802 ZOMGs33312$2440$2476$976908115 BFBs, 20 Fortified MOABs57670$6099$6135$1038258215 BFBs, 8 Fortified BFBs, ZOMG95816$8235$8271$1120978340 Camo Ceramics, 40 Camo Regrow Ceramics, 40 Camo Fortified Ceramics, 20 Fortified MOABs29280$3804$3840$1159388450 MOABs, 15 Fortified BFBs103720$8385$8421$124359853 ZOMGs46056$3660$3697$128057868 Fortified BFBs43264$1220$1238$129296875 ZOMGs78760$3050$3069$1323658815 Fortified MOABs, 12 BFBs, 3 DDTs50784$2515$2534$1348998915 Fortified MOABs, 12 Fortified BFBs81816$2401$2420$1373209050 Camo Regrow Fortified Ceramics, 4 DDTs9408$627$646$13796691100 Fortified Ceramics, 15 Fortified BFBs98420$3237$3256$1412239250 Fortified MOABs, 4 DDTs, 4 ZOMGs120480$4497$4517$1457409317 Fortified BFBs, 7 Fortified DDTs109716$2859$2878$1486189425 BFBs, 8 ZOMGs212416$8693$8712$15733195500 Camo Regrow Purples, 30 Fortified MOABs, 30 DDTs57720$2586$2605$1599369620 Fortified MOABs, 20 Fortified BFBs, 10 DDTs, 11 ZOMGs342032$10904$10923$170860978 Fortified DDTs, 2 Fortified ZOMGs82656$1525$1544$1724059820 Fortified BFBs, 11 ZOMGs320032$9761$9780$1821869930 MOABs, 9 Fortified DDTs, BAD97360$2820$2840$185026100Fortified BAD133280$1334$1354$186381101 - 109Random (Purples, Camo Purples, Fortified Leads, Camo Fortified Leads, Ceramics, Camo Ceramics, Fortified Ceramics, Camo Fortified Ceramics, MOABs, Fortified MOABs, BFBs, Fortified BFBs, ZOMGs, Fortified ZOMGs, DDTs, Fortified DDTs)**RandomRandomRandomRandom110 - 120Random (Purples, Camo Purples, Fortified Leads, Camo Fortified Leads, Camo Ceramics, Fortified Ceramics, Camo Fortified Ceramics, MOABs, Fortified MOABs, BFBs, Fortified BFBs, ZOMGs, Fortified ZOMGs, DDTs, Fortified DDTs, BADs**)RandomRandomRandomRandom
This section is incomplete. Help by finishing off the missing rounds.
*Rounds 1 and 2 exist in the code, but never appear in normal Alternate Bloons gameplay. Round 1 has 10 widely spaced Blue Bloons, while Round 2 is almost identical to the normal rounds. These rounds can be seen in certain challenges (including Odysseys).
**Following the Version 25.0 addition of predetermined Rounds 101-120, this has affected all games except ABR, which still uses the old rounds system.
