Version 4.3.1 is a minor update to Bloons TD Battles 2 version 4.3. It introduced a few cosmetic items, balance changes, and bug fixes. It later received an over-the-air update that introduced several balance changes.
The Dart Monkey buffs in the previous had a bigger impact on the very early game than we anticipated, so we are reducing the pierce slightly and increasing the cost to slow down its usage early on, while still keeping the buffs to higher tiers. — Update notes
The top path tack shooter is highly effective at defending everything below MOAB class. We are nerfing its cost slightly to make such a strong defence a bit more of an investment. — Update notes
The sniper has remained reasonably popular despite its nerf, although nothing close to the level of its glory days. While forcing a choice between high damage and cash generation paths was the point of the nerfs, it did leave Bouncing Bullet, a pure damage upgrade on the cash generation path, in a bit of a sad state. Without the extra shrapnel, we can afford to make the pierce much better without compromising the identity of the middle path. We also felt we could restore the bouncing shrapnel on the x5x since, as a tier 5 upgrade, it is automatically gated to the late game and can't be bought more than once. — Update notes
EZ Collect has never been a very valuable upgrade, particularly for desktop players or those using Banana Farmers where the collection radius isn't important. Quality Soil means that a 3/4/502 farm now has similar efficiency to a 3/4/520 farm. The former is cheaper and generates less cash, while the latter is more expensive and generates more. — Update notes
Scientist Gwendolin is getting significant changes to give her her own identity separate from Gwendolin. Since Scientist Gwendolin no longer specialises in dealing damage to lead and frozen, we decided to give these buffs to Gwendolin. — Update notes
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Levels
Changes
All
Main attack: now deals +1 damage to Lead and frozen
3+
Cocktail of Fire: now deals +1 damage to Lead and frozen
4+
Heat it up: now grants towers +1 damage to Lead and frozen
10+
Firestorm initial blast: now deals +1 damage to Lead and frozen
We wanted to make Scientist Gwen a more unique hero and give her different uses and strategies from regular Gwendolin. Playing into her chemist theme, we decided to give her strong synergies with monkeys that use chemicals in their attacks, specifically the Alchemist and the Glue Gunner. — Update notes
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Levels
Changes
All
Main attack: now deals +1 damage to glued or acid instead of Lead or frozen
3+
Chemical Cocktail: duration reduced ― 8s → 6s
Chemical Cocktail: damage interval increased ― 0.18s → 0.24s
Chemical Cocktail: damage per tick increased ― 1 → 2
Chemical Cocktail: no longer deals +1 damage to Lead or frozen
Chemical Cocktail: now removes acid and glue and deals damage equivalent to 4 seconds of DOT
4+
Heat it up: now grants towers +2 damage to glued and acid instead of Lead and frozen
5+
"Pyrotechnics Expert" replaced with "Chemical Expert", affects Glue Gunners with Glue Splatter and Alchemists with Unstable Concoction instead of Tack Shooters with Ring of Fire, Mortar Monkeys with Signal Flare, and Wizard Monkeys with Dragon's Breath
10+
Science Storm: duration reduced by 0.5s
Science Storm: no longer deals +1 damage to Lead or frozen
Science Storm: now removes acid and glue and deals damage equivalent to 4 seconds of DOT
18+
Now further buffs Chemical Expert instead of Pyrotechnics Expert
Microing Ezili in order to hit a single bloon with multiple MOAB Hexes at once is possible, but a bloon could only be affected by one hex at a time so the others were wasted. We are changing MOAB Hex to be stackable, as it feels like this is a dramatic and exciting play and the high skill level required to pull it off should prevent it from becoming too widespread. — Update notes
Bloon Bot Factory was intended to create an interesting challenge by denying access to half the player's defences at any one time. Unfortunately, most players simply skip the map or use a loadout that can ignore its effect like Mortar and Heli Pilot. We are increasing the amount of time both platforms are up to make the map less punishing and hopefully increase its play rate. — Update notes
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Both platforms now stay up until round 5 instead of round 1
Instead of alternating every two rounds, the top platform will drop for two rounds, then both will be up for four rounds, then the bottom platform will drop for two rounds, and so on
Ramping in sudden death and beyond is slow and many games that reach this stage feature defences that can easily defend the strongest rushes, meaning they usually end in a draw on round 50. We are significantly increasing the ramping for rounds 41-50 to make rushes harder to defend and make the ending of these games more exciting, and only increasing it slightly for rounds 51+ so that Bananza games are still able to go late. — Update notes
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Bloon HP ramping from rounds 41–50 increased ― +40% HP per round → +80% HP per round
Bloon HP ramping from rounds 51–100 increased ― +40% HP per round → +60% HP per round
Both platforms now stay up until round 5 instead of round 1