Corrosive Glue (BTD4-BTD5)

Corrosive Glue is the Glue Gunner's tier 3 upgrade in Bloons Tower Defense 4 and the second upgrade on the first path in Bloons Tower Defense 5.

Bloons Tower Defense 4
 is an upgrade for the Glue Gunner in BTD4. It is the third upgrade of the Glue Gunner. It allows the Glue Gunner to deal 1 damage to bloons per 2 seconds. It costs $255 on Easy, $300 on Medium, and $325 on Hard.

Description
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Bloons Tower Defense 5
"Makes the glue become more corrosive, popping bloons every few seconds while glued."

- BTD5 Flash description

Corrosive Glue is an upgrade for the Glue Gunner in BTD5. In BTD5, it is the 2nd upgrade of Path 1. It allows the Glue Gunner to deal 1 damage per 2 seconds. It costs $255 on Easy, $300 on Medium, $325 on Hard, and $360 on Impoppable.

It allows the Glue Gunner to shoot corrosive glue that pops one layer of a bloon every two seconds. Corrosive Glue can pop Lead Bloons and Ceramic Bloons, although it still does not slow down Ceramic Bloons except on mobile.

Description
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Tips

 * This upgrade pairs well Glue Storm, because it can effectively pop Rainbows and below while soaking all all layers with glue for good poppage.

Strategy
TBA



Trivia

 * In Bloons Tower Defense 4, if a player upgrade a Glue Gunner to Corrosive Glue during a round, all of the bloons that the Glue Gunner already glued in that round will corrode.
 * Sometimes in BTD4 Corrosive Glue will not pop bloons when Fast Forward is activated.
 * The artwork of the Glue Gunner with Corrosive Glue in Bloons Tower Defense 5 has green glue dripping from his gun even though he shoots yellow glue, however the Bloon Liquefier shows yellow glue even though it shoots green glue.
 * This is the only upgrade for the Glue Gunner in Bloons TD 5 that has yellow corrosive glue.
 * Corrosive Glue pops slightly faster than the speed of which Regrowth Bloons regenerate at. This makes it effective for Regen Farming.
 * This can destroy a Rainbow Bloon on any beginner track with Stickier Glue, and a Ceramic Bloon on any beginner track in Bloons TD 4 iOS.
 * The reason is that in Bloons TD 4 iOS when popping a Ceramic Bloon with corrosion, all 10 layers of the shell count as 1 layer. It is unknown if it is a glitch or not.