Bloons Tower Defense 4

Bloons Tower Defense 4, aka BTD 4, is a classic tower defense game initially released in Flash. Defend the path by avoiding Bloons from reaching the end.

What Is Bloons Tower Defense 4?

Bloons Tower Defense 4 is a classic Flash-era browser game, from Ninja Kiwi. You can play it free in your browser here — no Adobe Flash Player required.

How to Play

Press the Play button on this page and Bloons Tower Defense 4 loads directly in your browser — free, with nothing to install.

Pop balloons to earn dollars, use your dollars to buy defensive towers or upgrade your existing ones.

Bloons TD 4 features nine tracks with varying levels of difficulty. The three easier tracks feature more convenient locations for placing your defenses and tend to be longer. You can also set the difficulty level, reducing the cost of purchases and the number of levels, and increasing your lives.

There are 16 unlockable new defenses and upgrades the further you get in the level. These items can be upgraded to handle new threats better and eliminate enemies more effectively.

Practice Makes Perfect

Bloons Tower Defense 4 has three difficulty levels to choose from. The beginner level is a good place to solidify your game and work your way up. This game can take time to perfect, so start slowly and build your skills.

What to expect from the Easy level

• You get 200 lives

• There are 50 rounds

• Items are cheaper to purchase What to expect from the Medium level

• You get 150 lives

• There are 60 rounds

• Items are moderately priced to purchase What to expect from the Hard level

• You get 100 lives

• There are 75 rounds

• Items are more expensive to purchase Sandbox Mode

Sandbox is unlocked at rank 26. You get unlimited money and lives. You also get to choose which bloons come and when.

Apopolypse Mode

Apopolypse is unlocked at round 31. You get bloons non-stop until you run out of lives.

Types of Towers in BTD 4

• Dart Monkey
• Tack Shooter
• Boomerang Thrower
• Blast Tower
• Mortar Tower
• Ice Tower
• Glue Gunner
• Monkey Apprentice
• Monkey Ace
• Super Monkey
• Monkey Buccaneer

Controls

Here's what each control does:

Use the left mouse button to place the towers.

Features

• Various tracks to defend
• 16 unlockable defense items
• Upgradeable defenses
• Unlockable game modes

Why Play It in Your Browser?

Flash is gone from modern browsers, but classics like Bloons Tower Defense 4 still hold up. Playing here means no abandoned plugin installs and no hunting for shady downloads — press Play and you are in.

Frequently Asked Questions

Is Bloons Tower Defense 4 free to play here? Yes. Press Play and the game loads in your browser — no cost, no account, no download.

Do I need Adobe Flash? No. The game runs in your browser without installing Flash.

Can I play on my phone? Many Flash games work on mobile through the browser player, but a mouse and keyboard on desktop is usually nicest for precision titles.