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Bloons Tower Defense is a classic strategy game where you place and upgrade five tower types to stop Bloons from escaping across 50 rounds.
Bloons Tower Defense is the original tower defense entry in Ninja Kiwi’s Bloons TD series. You defend a winding track by placing towers beside the path, upgrading their range or attack abilities, and stopping colored Bloons before they reach the exit. The original game has one map, five tower types, and 50 increasingly demanding rounds.
The first Bloons Tower Defense was released in 2007 by Ninja Kiwi. Compared with later entries such as Bloons TD 6, the original is much smaller in scope, but it establishes the core formula of earning cash from popped Bloons and reinvesting that money into a stronger defense.
You begin with $650 and 40 lives. Bloons enter the track and automatically travel toward the exit. Every Bloon that escapes reduces your remaining lives, so the goal is to build enough defenses to survive through round 50.
Towers attack automatically once they are placed. Your decisions revolve around where to position them, when to buy another tower, and when an upgrade is more useful than expanding your defense.
Larger colored Bloons contain smaller Bloons inside them. Destroying one layer therefore does not always remove the target immediately, and later rounds require enough attack coverage to handle increasingly dense groups.
The original browser game is primarily mouse controlled. Kongregate documents tower placement through the right-side purchase menu and also provides a keyboard shortcut for canceling an action.
Bloons Tower Defense begins the series with five defensive tower types: Dart Tower, Tack Tower, Ice Tower, Bomb Tower, and Super Monkey. Each fills a different role, and all five later became recurring parts of the Bloons TD series.
| Tower | Main Role | Upgrade Focus |
|---|---|---|
| Dart Tower | Low-cost single-target defense for early rounds. | Piercing and additional range. |
| Tack Tower | Fires outward in several directions, making bends useful positions. | Faster shooting and larger range. |
| Ice Tower | Freezes nearby Bloons temporarily. | Longer freeze duration and wider radius. |
| Bomb Tower | Uses explosive attacks against groups of Bloons. | Larger explosions and additional range. |
| Super Monkey | Very fast dart attacks for expensive late-game defense. | Greater range. |
Most towers have two available upgrades in the original game. Super Monkey is the exception, with one range upgrade.
A tower does not need to sit as close as possible to the entrance. What matters is how much useful track falls inside its attack range.
Curves can be strong positions because Bloons remain close to the same tower while traveling around the bend. Tack Towers particularly benefit from positions where their multi-directional attack can intersect several parts of the path.
Before placing an expensive tower, check its range indicator. A slightly different position may allow it to attack Bloons both before and after a turn, improving its usefulness without costing additional money.
The original game includes several important attack interactions. Ice Towers freeze nearby Bloons, but White Bloons resist freezing. Bomb attacks are ineffective against Black Bloons. Frozen Bloons also resist ordinary darts and tacks, while explosive attacks can still damage them.
This means filling the map with only one tower type can create weaknesses. A combination of attack styles gives you more ways to handle Bloons with different properties.
Every round presents a resource decision. Buying another tower adds coverage somewhere new, while upgrading an existing defense makes a position you already control stronger.
Upgrade towers that consistently attack large portions of each wave. A poorly positioned tower remains poorly positioned even after you spend more money on it.
New towers are more useful when Bloons are escaping through an uncovered section or when your current defenses lack the attack type needed for a particular Bloon.
The original game lets you sell a tower for 80% of the money invested in it. This gives you a way to correct a poor placement or recover money from a defense that is no longer contributing enough.
Selling should still be deliberate. Rebuilding repeatedly wastes part of your investment, so it is better to think about placement before purchasing whenever possible.
Place early towers where they can attack the track for as long as possible. This gives each purchase more opportunities to pop Bloons during every round.
If one Dart or Tack Tower attacks almost every wave while another sees little action, invest in the busier position first. Upgrades are most valuable when the tower frequently has targets.
Black and White Bloons interact differently with Bomb and Ice Towers. Maintain enough variety that one immunity does not create an obvious weakness in your defense.
Their attacks spread outward in eight directions, so bends and places where multiple parts of the track enter their range can make better use of each volley.
Super Monkey is the most expensive tower in the original game. Saving for one can provide strong late-game firepower, but only if your existing towers can keep Bloons from escaping while you accumulate the required cash.
The first game is much simpler than its sequels. It has one track, one difficulty setting, five towers, and 50 rounds. Later Bloons TD games expanded the formula with more maps, tower types, upgrade systems, game modes, and other progression features.
That smaller structure makes the original useful for understanding the basic Bloons TD loop: place defenses, watch how Bloons travel through their ranges, reinvest your cash, and adjust before stronger waves expose weaknesses.
If you enjoy defending a route, upgrading units, and preparing for stronger enemy waves, try these related strategy games on YaloGames:
Your goal is to place and upgrade towers that pop Bloons before they travel through the maze and escape from the end of the track.
The original Bloons Tower Defense has 50 rounds. Completing round 50 finishes the game.
There are five: Dart Tower, Tack Tower, Ice Tower, Bomb Tower, and Super Monkey.
Yes. The original game returns 80% of the money invested in a tower when it is sold.
Bloons Tower Defense was developed by Ninja Kiwi and released as a browser game in 2007. Kongregate lists its release there as August 19, 2007.
Bloons Tower Defense establishes the formula that shaped the rest of the series: careful tower placement, automatic attacks, cash management, upgrades, and increasingly difficult Bloon waves. Use bends to maximize tower coverage, combine different attack types, reinforce weak sections before they begin leaking, and invest your money where it produces the most useful defense as you work toward round 50.
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