Bloon Sends/BTDB2/Strategies/General

TBA


 * This page is a general guide for Bloon Sends. For more advanced guides, see Bloon Sends/Strategies/Optimization



Bloon Sends are the lifeblood of the competitive nature of Bloons TD Battles 2. Bloon Sends both influence the rate of earning income and provide offensive pushes against the opponent. Most bloon sends provide an increase Eco, which gives a certain amount of income every 6 seconds. Some sends are inherently weaker than others, while some sends provide more eco per dollar. The optimal balance of utilizing Bloon Sends determines the player with the game advantage.

The aim of this article is a general guide for Bloon Sends. It summarizes how to effectively use Bloon Sends and defend against them without going into too much intricate detail about meta strategy.

Grouped Reds



 * Quantity: 8
 * Delay: 0.1s per bloon, 0.8s
 * Cost: $15
 * Eco: 1
 * Round Unlock: Round 1
 * Round Final: Round 11

Grouped Reds are the baseline of both offense and income. To start off a maximal boost in income while also forcing the opponent to react to defense, send Grouped Reds as soon as possible. At the same time, place a tower that excels at popping groups of bloons for a relatively low cost.

Spaced Blues



 * Quantity: 5
 * Delay: 0.3s per bloon, 1.5s
 * Cost: $15
 * Eco: 1.3
 * Payoff: X seconds
 * Round Unlock: Round 1
 * Round Final: Round 2

For the same cost as Grouped Reds, Spaced Blues are more eco-efficient but are sent slower and have much less spacing. Blue Bloons are also faster and have more total RBE, making them stronger than Grouped Reds against towers that attack slowly.

Grouped Blues



 * Quantity: 6
 * Delay: 0.1s per bloon, 0.6s
 * Cost: $24
 * Eco: 1.3
 * Payoff: X seconds
 * Round Unlock: Round 3
 * Round Final: Round 12

Grouped Blues have the same density as Grouped Reds but are sent much faster and send Blues instead of Reds. The main strength of Grouped Blues is how strong its eco gain extrapolates when this particular send is spammed out, making it much more worth than Grouped Reds in the long-run. To beat Grouped Blues, towers that excel against grouped bloons will be even more important.

Spaced Greens

 * Quantity: 5
 * Delay: 0.23s per bloon, 1.5s
 * Cost: $14
 * Eco: 1.3
 * Payoff: X seconds
 * Round Unlock: Round 2
 * Round Final: Round 4

For the lower cost than Spaced Blues, Spaced Greens are also sent faster and have a greater offensive value against towers that do not excel against spaced bloons. To counter Spaced Greens yourself, a tower that does more than one damage per shot will often suffice.

Grouped Greens

 * Quantity: 5
 * Delay: 0.08s per bloon, 0.4s
 * Cost: $35
 * Eco: 1.4
 * Payoff: X seconds
 * Round Unlock: Round 5
 * Round Final: Round 13

Grouped Greens are slightly denser than Grouped Blues and are sent much faster, and send Greens instead of Blues. Like Grouped Blues, Grouped Greens extrapolate eco hugely if spammed, but because they aren't as efficient as Grouped Blues they shouldn't always be used unless there is already a solid flow of income while also yourself defending against other rushes.

Spaced Yellows

 * Quantity: 5
 * Delay: 0.23s per bloon, 1.5s
 * Cost: $24
 * Eco: 1.7
 * Payoff: X seconds
 * Round Unlock: Round 3
 * Round Final: Round 6

Spaced Yellows are more cost-efficient than Grouped Blues but are sent much slower, in fact the same rate as Spaced Greens. Spaced Yellows are a deadly send against towers that find it difficult to catch fast-moving bloons.

Grouped Yellows

 * Quantity: 4
 * Delay: 0.06s per bloon, 0.24s
 * Cost: $40
 * Eco: 1.6
 * Payoff: X seconds
 * Round Unlock: Round 7
 * Round Final: Round 19

Grouped Yellows are slightly denser than Grouped Greens and are sent much faster, and send Yellows instead of Greens. Grouped Yellows have exactly the same eco cost-efficiency as Grouped Greens per dollar and have a much stronger offensive value. Against Grouped Yellows yourself, find a fast-attacking tower that also excels against grouped bloons.

Spaced Pinks

 * Quantity: 3
 * Delay: 0.3s per bloon, 0.9s
 * Cost: $28
 * Eco: 1.8
 * Payoff: X seconds
 * Round Unlock: Round 4
 * Round Final: Round 8

Spaced Pinks are more costly than Spaced Yellows, give slightly more eco, are sent a little faster per slot, but are stronger in offense. Pinks are the fastest bloon in the game, and are especially effective against defenses reliant on slow towers.

Grouped Pinks

 * Quantity: 4
 * Delay: 0.05s per bloon, 0.2s
 * Cost: $65
 * Eco: 2.4
 * Payoff: X seconds
 * Round Unlock: Round 9
 * Round Final: Round 50

Grouped Pinks are the basis of eco for the much later rounds. They are the second-fastest to send (second to Grouped Purples), give a hefty amount of eco, and are forever available in the current battle once unlocked. For simply spamming eco, this is the optimal choice, but is less efficient in cost compared to other sends such as Grouped Whites. In some rare cases, Grouped Pinks can be spammed out to rush the opponent for high offense, but by this point most defenses capable of beating large amounts of Grouped Yellows can easily beat Grouped Pinks.

Spaced Whites

 * Quantity: 3
 * Delay: 0.25s per bloon, 0.75s
 * Cost: $30
 * Eco: 1.8
 * Payoff: X seconds
 * Round Unlock: Round 5
 * Round Final: Round 9

Spaced Whites cost more than Spaced Pinks, give the same amount of eco as Spaced Pinks, but its offensive is much heavier because it sends Whites. What makes Spaced Whites so deadly is that it can split into fast-moving Pinks upon hitting. Towers capable of dealing multiple damage or shoot multiple projectiles will have a much easier time against Spaced Whites. Since Whites are immune to freezing, Spaced Whites are deadly against Ice Monkeys.

Grouped Whites

 * Quantity: 3
 * Delay: 0.1s per bloon, 0.3s
 * Cost: $65
 * Eco: 2.5
 * Payoff: X seconds
 * Round Unlock: Round 10
 * Round Final: Round 21

Grouped Whites cost the same as Grouped Pinks, give slightly more eco, but are sent slower and obviously send Whites instead of Pinks. In terms of generating eco, Grouped Whites are the best choice for simultaneously making lots of eco while not overly depleting available cash. In terms of offense, it isn't very strong against anything except defenses dependent on Ice Monkeys, due to how late this send is unlocked compared to other rushing options.

Spaced Blacks

 * Quantity: 3
 * Delay: 0.25s per bloon, 0.75s
 * Cost: $33
 * Eco: 2
 * Payoff: X seconds
 * Round Unlock: Round 6
 * Round Final: Round 9

At the same deployment rate as Spaced Whites, Spaced Blacks cost slightly more but give a significantly greater eco gain and send Blacks, which are immune to most explosive attacks. Since Blacks move slower than Whites, they aren't as dangerous in terms of offense, except against explosives, in which there is a greater variety of those towers who have such a weakness.

Grouped Blacks

 * Quantity: 4
 * Delay: 0.08s per bloon, 0.24s
 * Cost: $80
 * Eco: 3
 * Payoff: X seconds
 * Round Unlock: Round 10
 * Round Final: Round 25

Grouped Blacks are more expensive than Grouped Whites, send more bloons per slot, have an overall shorter delay per slot, and give more eco, and obviously send Blacks instead of Whites. Grouped Blacks are sort of the intermediate in terms of eco versus money drain, having a decent cost-efficiency and rate of eco gain. In terms of offense, just as with Grouped Whites, Grouped Blacks aren't very dangerous compared to other sends unlocked at this point, except in the case of defenses dependent on explosives.

Spaced Purples

 * Quantity: 4
 * Delay: 0.4s per bloon, 1.2s
 * Cost: $70
 * Eco: 4
 * Payoff: X seconds
 * Round Unlock: Round 8
 * Round Final: Round 10

Spaced Purples are a very slow send that gains a lot of eco per slot but have a huge delay per slot, and are actually less cost-efficient than Spaced Zebras. Spaced Purples, however, are quite spaced compared to most spaced rushes. While Purples cannot be hit by most magic attacks, the Spaced Purples send lacks a strong offensive point except for catching slow-attacking towers.

Grouped Purples

 * Quantity: 5
 * Delay: 0.035s per bloon, 0.175s
 * Cost: $115
 * Eco: 2.7
 * Payoff: X seconds
 * Round Unlock: Round 11
 * Round Final: Round 50

Grouped Purples are a notoriously dangerous rush due to their extreme density and very quick sending per slot, in fact faster than Grouped Pinks. However, Grouped Purples are quite expensive to send out and drain money very quickly if spammed. It does have a higher eco gain per second when spammed, which actually makes it viable in situations involving maximum eco gain on a giant glut of money.

Regrow Bloons
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Camo Bloons
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Fortified Bloons
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