Bloons TD 4 - The Peak of Classic Bloons Defense

Bloons TD 4 is widely considered the pinnacle of the early Bloons TD series. It introduces monkey agents with active abilities, specialty buildings, and the toughest pre-BTD5 bloon roster — ceramics, camo rainbows, and BFB blimps that soak hundreds of hits. Sixteen tracks, deep upgrade paths, and tactical agent deployment make BTD 4 the deepest browser-era tower defense on MonkeyMart.one.

How to Play Bloons TD 4

• Build your economy: Start with cheap Dart or Banana Farms, then scale into heavy towers
• Deploy agents: Activate abilities like Super Monkey Storm or Glue Strike at critical waves
• Specialty buildings: Unlock global buffs that boost entire tower categories
• Handle BFBs: Big Floating Bloons need Mortars, Snipers, or grouped Super Monkeys
• Choose difficulty: Easy, Medium, and Hard modes change starting cash and lives

Bloons TD 4 Features

• 16 maps with unique path geometry and strategy demands
• Monkey agents with cooldown-based special abilities
• Specialty buildings for global tower enhancements
• BFB-class bloons as late-game armor-plated bosses
• Free at MonkeyMart.one — BTD 4 guide

Play Bloons TD 4 Unblocked

Bloons TD 4 is the ultimate classic BTD experience in the browser. Play free at MonkeyMart.one. Played the earlier games? Continue from BTD 3 or start the series at BTD 1.

BTD 4 guide · Browse all games

Bloons TD 4 FAQ

What are monkey agents in BTD 4?

Special units with active abilities — like calling a monkey plane strike or freezing all bloons — usable once per cooldown.

How do I beat BFB bloons?

Group Mortar Towers, Snipers, or multiple Super Monkeys at a choke point. Single Dart Monkeys cannot break through.

Is BTD 4 the hardest classic Bloons TD?

Among BTD 1–4, yes. BTD 4 on Hard mode with BFB waves is a serious strategy test.