The Glue Gunner shoots glue at bloons to slow them down. Glue in BTDX always soaks through all colored bloon layers (not MOAB layers or ceramic/brick). Costs $450.
Upgrades[]
Piercing Glue
Glues two bloons and pops them
$350
Total cost: $800
Unlock the challenge for this tower by unlocking 5M (Moab Poison).
Complete the challenge to unlock 3S (Acid Gun).
Corrosive Glue
Glued bloons pop once every two seconds, +1PP
$400
Total cost: $1,200
Glue Hose
Shoots much faster and glues more bloons
$2,000
Total cost: $3,200
Bloon Dissolver
Glued bloons pop twice a seconds +1PP
$1,800
Total cost: $3,000
Glue Factory
Leaves a bunch of glue on the track
$2,500
Total cost: $3,700
Acid Gun
Burns bloons, pops more of them and does more damage