Is Bloons TD free to play here?

Yes. The game is served from this domain and runs in the page — no download, no account, no plugin. Press Play and it starts in a few seconds.

How do you play Bloons TD?

Click a tower under Build Towers and click beside the track to place it, then press Start Round. Towers pop bloons automatically; popped bloons give you money for more towers and upgrades. Do not let the bloons reach the end of the track.

Which Bloons TD is this?

The first one — Ninja Kiwi's 2007 Bloons Tower Defense, with five towers and 50 rounds. Bloons TD 2, 3 and 4 are on their own pages on this site.

How can Flash games still run?

They run on Ruffle, an open-source Flash Player emulator written in Rust and WebAssembly. Nothing is installed; the page loads Ruffle and the original game file together.

Does Bloons TD work on a Chromebook?

Yes. It only needs the mouse (or a tap), and the whole board fits a Chromebook screen. If a click does nothing at first, click once inside the game so it has focus.

What happens when bloons escape?

You lose lives — one for a red bloon and more for the tougher colours, since each bloon carries smaller ones inside. You start with 40; at zero the game is over and Restart takes you back to round 1.

Bloons TD — Play the Original Bloons Tower Defense Free

Bloons TD: the tower defense game that started the monkeys-versus-balloons series

Bloons TD is where Ninja Kiwi's tower defense series began. The idea came from their earlier game Bloons, where a monkey throws darts at balloons: turn the monkeys into towers, give the balloons a track to follow, and you have a strategy game that has run through six sequels since. This is the first one, the 2007 Flash original, running in the page on Ruffle.

There is one track, a grey path that snakes across a green field, and bloons enter at one end and leave at the other. You start with 650 money and 40 lives. Every bloon that makes it to the exit costs lives — one for a red, more for the tougher colours, because every layer inside it counts. Popping bloons earns money, and money buys towers and upgrades. A game runs 50 rounds, and the last one is a wall of black and white bloons.

Five towers do the work. The Dart Monkey throws single darts and can learn piercing darts that pop two bloons at once. The Tack Shooter sprays eight tacks around itself. The Ice Tower freezes everything near it, the Bomb Tower lobs explosives that pop in an area, and the Super Monkey fires a constant stream of darts for a price that makes you think twice. Where you put them matters as much as which you buy: corners, where a tower can hit the same bloon for a long time, are worth more than straight lines.

Controls & mechanics

Action	Control	Purpose
Build a tower	Click its icon, then click beside the track	The circle shows its range while you place it; it has to go on grass, not on the path
Start a round	Start Round button	Sends the next wave; the button comes back when the last bloon is gone
Upgrade or sell	Click a placed tower	Shows its two upgrades and a sell button; selling returns 80% of everything spent on it
Restart	Restart button (bottom right)	Starts the game again from round 1 with 650 money and 40 lives
Sound	Speaker icon (bottom left)	Mutes and unmutes the pops and music

How to get further in Bloons TD

Put the first darts on a corner: A Dart Monkey on the inside of a bend sees the same bloon twice as long as one on a straight. Your first 650 buys two or three towers — put them where the track turns back on itself.
Buy piercing darts early: The Dart Monkey upgrade lets each dart pop two bloons. It is the cheapest way to double your damage while the waves are still reds and blues.
Tack Shooters thin out crowds: Eight tacks at once are wasted on a single bloon but shred a tight group. Get the speed upgrade and place them where the track bunches up.
Ice and bombs belong together: Frozen bloons cannot be popped by darts or tacks, but bombs break them. An Ice Tower with a Bomb Tower beside it is the pairing the game is built around.
Know black and white bloons: Black bloons are immune to bombs and white bloons cannot be frozen, and both carry two yellows inside. Have plain darts and tacks covering the track before they arrive.
Upgrade before you spread out: An upgraded tower usually beats a second cheap one. Spend on range and speed for the towers already on good corners before you fill the field.

Key features

The original: Ninja Kiwi's 2007 Bloons Tower Defense, the first game of the series, in its original Flash build.
Five towers: Dart Monkey, Tack Shooter, Ice Tower, Bomb Tower and Super Monkey — each with two upgrades.
50 rounds: Reds and blues first, then greens, yellows, then black and white bloons that ignore bombs or ice.
40 lives: Every layer of an escaping bloon costs one; a leaked yellow hurts far more than a red.
The whole series here: Bloons TD 2, 3, 4 and the BTD4 Expansion are on this site too, plus the original Bloons dart game.
Built for a Chromebook: Mouse only, no keyboard needed, and the whole board fits a 1366×768 screen.

Game info

Title: Bloons TD
Developer: Ninja Kiwi
Category: Bloons TD
Platform: Web browser (HTML5)
Developer: Ninja Kiwi (Kaiparasoft) · Bloons Tower Defense (2007) · original Flash build on Ruffle, self-hosted on bloonstd.org

Pro tip: Sell nothing in the early rounds. Every tower you keep keeps earning its money back by popping; a sale only returns 80%. Save selling for the moment you need to move a tower to a better corner.