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Different bloon sends will increase your eco by different amounts. Some more powerful bloon sends will even reduce your eco!
~ Quincy's loading screen tips
Bonuseco btdb2 3

Generating extra eco from a Bloon Send

Transfer eco into cash

Converting eco into money

Eco is a time-based income generation in Bloons TD Battles 2. It works similarly to its previous counterpart, except Bloon Sends in this game are much faster, bloons can be sent faster overall resulting in a faster eco gain, and notably there are much weaker income penalties for stronger bloon types. In fact, bloon sends involving heavy rushes of blimps result in an eco penalty, and Spaced and Grouped MOABs just earn no eco rather than losing eco.

Eco is the rate of income gained every 6 seconds (every 4.2 seconds in Speed Battles). Players earn more eco by sending economic Bloon Sends. Players earn less eco or even lose eco by sending stronger sends. Gaining more eco gives a larger rate of income, extrapolating to a huge profit as time goes by.

Eco Table[]

Information correct as of Version 4.0.2.

Eco Table
Bloon Send Eco Eco + Monkeyopolis
Grouped Reds 1.0 1.2
Spaced Blues 0.8 1.0(?)
Grouped Blues 1.0 1.2
Spaced Greens 0.9 1.1
Grouped Greens 1.4 1.6
Spaced Yellows 1.2 1.4
Grouped Yellows 1.6 1.9
Spaced Pinks 1.4 1.7
Grouped Pinks 2.3 2.8
Spaced Whites 1.5 1.8
Grouped Whites 2.6 3.1
Spaced Blacks 1.6 1.9
Grouped Blacks 3.0 3.6
Spaced Purples 3.5 4.2
Grouped Purples 2.7 3.5
Spaced Zebras 2.7 3.2
Grouped Zebras 3.5 4.2
Spaced Leads 2.8 3.4
Grouped Leads 4.5 5.4
Tight Leads 24.0 28.8
Spaced Rainbows 2.8 3.4
Grouped Rainbows 6.0 7.4
Spaced Ceramics 5.0 6.0
Grouped Ceramics 5.0 6.0
Tight Ceramics 0 0
Spaced MOABs 0 0
Grouped MOABs 0 0
Tight MOABs -50 / -100 -40 / -80
Spaced BFBs -25 / -50 -18 / -39.1
Grouped BFBs -25 / -50 -18 / -39.1
Tight BFBs -150 / -300 -120 / -240
Spaced ZOMGs -100 / -200 -80 / -160
Grouped ZOMGs -100 / -200 -80 / -160
Tight ZOMGs -400 / -800 -320 / -660
Spaced DDTs -150 / -300 -120 / -240
Grouped DDTs -200 / -400 -180 / -360
Spaced BADs -400 / -800 -320 / -640
Grouped BADs -400 / -800 -320 / -640

If playing on Play With Fire or Bananza, the eco amounts are 2x more than the Monkeyopolis multiplier. With both modes active, this is 4x.


Alt-Eco[]

Alt-Eco is a term used in Bloons TD Battles 2. It refers to alternate forms of income generation. This term mainly refers to alternate forms of income based on time, and particularly applies to the trio of offense-and-income ability upgrades (Jungle's Bounty, Supply Drop, Support Chinook, including their T5 upgrades). Pre-4.0.2 Monkey Town and Monkey City are unique types of Alt-Eco that depend entirely on sending bloons to extrapolate a greater income gain.

Other forms of income that rely on round-based income (e.g. Banana Farm, Merchantman) or direct interaction with bloons (e.g. Bloon Trap, Rubber to Gold) are not usually referred as "eco", rather more correctly as "alternate income". This is because these types of income generation do not rely purely on a fixed time basis.

Strategy[]

Main article: Eco (BTDB2)/Strategies

Summary[]

Eco forms the basis of gaining a solid economy, allowing one's spending power to scale across rounds. Use this wisely to accumulate the maximum profits, enough to give yourself a solid advantage over the opponent. Once a pure eco strategy is mastered, mixing eco with alternate income sources (such as Banana Farms, Merchantmen, and Bloon Traps) helps further gain an income advantage. Keep an eye on your own and the opponent's defenses as an aid for adjusting the gain of eco compared to opting for defense, offense, or alternate income.

Tips[]

  • Make use of Bloon Sends. They are the only real method of gaining true eco.
  • Try using hotkeys on a computer or both of your hands on mobile to multitask ecoing and doing whatever you're doing.
  • Don't insist exclusively on either grouped or spaced sends; mixing them whenever appropriate can help maximize eco gain.
  • Go with Grouped Pinks for faster eco, but make sure you switch to Grouped Whites or Grouped Blacks soon, as you can lose 0.1 eco per send, but it stacks in the end.
  • If you want, you can do a combination of ecoing and rushing, but the conditions have to be right for a desirable result. For instance, sending Grouped Zebras at R17+ is considered fast-generating at eco but also can send a hefty amount of pressure to the opponent, forcing extra defense for the opponent while the player quickly gains eco.
  • Some eco sends have an optimal "frontier eco", i.e. the fastest possible way to generate eco regardless of cost-efficiency. It's not recommended to exclusively opt for optimal "frontier eco" unless it's a game mode with nearly infinite money, such as Play With Fire or Bananza.
    • As of Version 4.0.2, Round 16-22's optimal frontier eco send is Grouped Ceramics, while Round 23+'s optimal frontier eco send is Tight Leads.

Sounds[]

When a bloon send is unlocked:

When receiving money from eco:

When sending bloons:

Gallery[]

Trivia[]

  • Eco in BTDB2 is more dynamic than in BTDB1, because of a greater variety of high eco sends, cost-efficient eco sends, fast and slow sends, rush varieties, and deprecations of "outdated" bloon sends on various rounds.
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