|“||Blue bloons move faster and have red bloons inside them.||”|
|~ Round 4 in Bloons Tower Defense 1|
|“||50 Blues heading down next.||”|
|~ Round 7 in Bloons Tower Defense 3|
|Debut||Bloons Tower Defense|
|Appearance(s)||Bloons TD 1|
Bloons TD 2
Bloons TD 3
Bloons TD 4
Bloons TD 5
Bloons TD Battles
Bloons Super Monkey
Bloons Super Monkey 2
Bloons Monkey City
|RBE||1 (Bloons series)
2 (BTD, BSM and BMC series)
|Parent of||Red Bloon|
|Child of||Green Bloon|
A Blue Bloon is a Bloon that appears in every Bloons game to date. In BTD series, it traditionally appears on the 3rd or 4th round. This can be altered for player-made levels in the Bloons TD 4 Track Editor if "Light" or "Hard" bloon progression is chosen. It is a "grandchild" of a Yellow Bloon, and it spawns from a Green Bloon; it spawns a Red Bloon. It is only slightly faster than a Red Bloon with a speed of 4 Blocks per second, and has the same speed as a Camouflage Bloon (BTD4). The RBE of a Blue Bloon is 1 (Bloons series) or 2 (other games), meaning it takes 2 hits to pop entirely.
- After MOAB's, Lead and Red Bloons (these have the same speed), BFB's and ZoMG's, the Blue Bloon is the fourth slowest Bloon in the Bloons TD series.
- The Mortar Tower's Bloon Buster upgrade, The Glue Gunner's Bloon Dissolver upgrade, the Beekeeper, the Sniper Monkey, and the Monkey Ace Spectre bombs, due to their ability to pop 2 or more layers, can pop a Blue Bloon in 1 hit.
- Blue bloons were faster in BTD1 and BTD2, but they were slowed down in BTD3 and all later games to make those first few levels a bit easier.
- A blue bloon can even outspeed a 0-2 super monkey on some tracks. This was tested on MOAB desert.