BTD Ultimate

Bloons Tower Defense Ultimate is an upcoming game in the Bloons Tower Defense Series. Its original name was BTD7, before it was changed to BTD Ultimate for marketing purposes.

The game aims to improve on the core concepts of the series, bringing back many towers from previous establishments, adding new ones, and overhauling the upgrade and monkey knowledge systems for even better progression.

It's also been confirmed that there will be post-launch support for custom tracks and waves, and even entire mods.

Towers
Towers in BTDU are seperated into 4 categories, similar to BTD6. Each category has its own theme, unlocks and monkey knowledge tree. On top of that, there are also three subcategories that exist across all main categories: Core, Special and Support.

Core towers provide consistent or strong popping power. Most of them are straightforward to use, but they still have some unique tweaks that differentate them from each other.

Special towers brind unique abilities and behaviors to the battlefield. They usually excel against certain types of bloons, but are less flexible overall.

Support towers will rarely beat waves of bloons by themselves, but are nonetheless useful as they buff other towers, disrupt bloons or improve your economy.

Primary Towers
These are the first towers that a player unlocks. They contain all classic towers, plus some others that are essential to a successful defense.
 * Dart Monkey (Core)
 * Boomerang Monkey (Core)
 * Tack Shooter (Core)
 * Bomb Shooter (Special)
 * Ice Monkey (Special)
 * Monkey Buccaneer (Special)
 * Glue Gunner (Support)
 * Banana Farm (Support)
 * Monkey Village (Support)

Military Towers
The second category, full of war-hardened monkeys that thrive on the battlefield, but require more careful positioning and tactics to be effective. All the special towers in this category share the trait of being controlled directly.
 * Sniper Monkey (Core)
 * Monkey Ace (Core)
 * Monkey Tank (Core)
 * Dartling Gun (Special)
 * Mortar Monkey (Special)
 * Heli Pilot (Special)
 * Monkey General (Support)
 * COBRA (Support)
 * Monkey Sub (Support)

Magic Towers
A smaller, but very unique category. Magic Monkeys are all very unique, while they are more expensive than other towers they excel at dealing with the worst kinds of bloons.
 * Ninja Monkey (Core)
 * Wizard Monkey (Core)
 * Bloonmancer (Special) - A new tower, split off from the old bottom path of the Wizard
 * Super Monkey (Special)
 * Alchemist (Support)
 * Druid (Support) - Changed to focus even more on support effects

Science Towers
The obvious counterparts to Magic Monkeys, with just as many abilities and a distinct focus on popping waves of bloons at once.
 * Monkey Engineer (Core)
 * Astronaut (Core)
 * Lab Monkey (Special)
 * Anti Monkey (Special) - The dark counterpart to the Super Monkey, and the new home to upgrades like Robo-Monkey and the Dark Knight.
 * Spike Factory (Support)
 * Electro Tower (Support)

Upgrade System
BTD Ultimate features an even bigger upgrade system that expands on the ideas of BTD6. Each type of monkey now has three main paths and three secondary upgrade paths, and on the battlefield you can choose one of each for a monkey. (There are rumours of later monkey knowledge upgrades that allow monkeys to have more than one secondary path upgraded, but those haven't been confirmed.)

Main upgrade paths have 4 upgrades and are all about specialization. They give new attacks, effects and abilities, change the appearance of your monkeys, and might even reduce other stats in exchange for their new strengths. Of course they are also expensive, so you aren't going to be able to afford them for all your monkeys.

Secondary upgrade paths only have 2 upgrades and usually revolve around simple stat upgrades or modifiers such as Camo Detection. If you are planning to use a wide array of monkeys in a defense, focusing on these upgrade paths will make them more efficient without requiring huge amounts of cash.