BTD6 Suggestions

BTD6 has not been released yet, but for now, here are a few suggestions to Ninja Kiwi that I have found so far.

Prices are for medium mode.

Towers and Upgrades

Dart Monkey 
-Path 1-
Long Range Darts $100
Enhanced Eyesight $120 
Sniper's Vision $600
Stormer Darts $850

-Path 2-
Sharp Shots $100
Razor Sharp Shots $140
Triple Darts $250
Super Monkey Fan Club (Ability) $1000

-Path 3-
Spike-o-pult $400
Powerful Spiked Balls $550
Juggernaut $1300
Big Bertha $2150

-Path 4-
Arrow Monkey $300
Bow Monkey $500
Monkey Hunter $ 1200
Monkey Bowmaster $3000

Tack Shooter
-Path 1-
Faster Shooting $80
Even Faster Shooting $100
Burst Gun $1500
Tack Rain $2000

-Path 2-
Sharper Tacks $100
Piercing Tacks $200
Blade Shooter $800
Blade Maelstrom (Ability) $2200

-Path 3-
Extra Range Tacks $100
Super Range Tacks $200
Godly Range Tacks $300
Spike Drop $1000

-Path 4-
Tack Sprayer $500
Ring of Fire $1800
Plasma Ring $5000
Neutron Ring $9500

Sniper Monkey
-Path 1-
Full Metal Jacket $300
Point Five Oh $1700
Deadly Precision $ 5000
Uranium Shells $18000

-Path 2-
Faster Firing $250
Night Vision Goggles $250
Semi Automatic Rifle $2000
Supply Drop (Ability) $6000

-Path 3-
Poisoned Darts $500
Bloontonium Darts $1400
Explosive Darts $3200
Cripple MOAB $12000

-Path 4-
Twin Shot $300
Triple Shot $2000
Penta Shot $5000
Thirty Hits $10000

Boomerang Thrower
-Path 1-
Iron Boomerangs
Glaive Thrower
Glaive Riccochet
Glaive Lord

-Path 2-
Faster Throwing
Crusher Boomerangs
Bionic Boomer
Turbo Charge (Ability)

-Path 3-
Multi Target
Stun Shots
Orbital Shots
Lightsaber Thrower

-Path 4-
Sonic Boom
Red Hot Rangs
Radioactive Ranga
Meltdown

Ninja Monkey
-Path 1-
Ninja Discipline
Sharp Shurikens
Double Shot
Bloonjitsu

-Path 2-
Seeking Shuriken
Distraction
Flash Bomb
Sabotage Supply Lines(Ability)

-Path 3-
Multi-Point Stars
Rebound Stars
Shuriken Launcher
Shadow Stars

-Path 4-
Martial Arts Stick
Draw Blade
Kursed Katana
Blade of the Rising Sun

Bomb Tower
-Path 1-
Extra Range
Frag Bombs
Cluster Bombs
Bloon Impact

-Path 2-
Missile Launcher
Missile Silo
Big Bazooka
Explosive Rain (Ability)

-Path 3-
Bigger Bombs
Heavy Load
Thermobaric Bombah
The Nuke

-Path 4-
Grenade Launcher
Huge Hitter
MOAB Mauler
MOAB Assassin 

Ice Tower
-Path 1-
Enhanced Freeze
Liquid Nitrogen
Arctic Wind
Viral Frost

-Path 2-
Dry Freeze
Snap Freeze
Ice Shards
Absolute Zero

-Path 3-
Permafrost
Deep Freeze
Icebot
Iceberg 2000

-Path 4-
Twenty Under Zero
Chemical Freeze
Anti-Physical Freeze
Whiteout

Glue Gunner
-Path 1-
Gravity Glue
Unstable Glue
Spread Shot Glue
Glue Gatling

-Path 2-
Double Glue Shot
Glue Splatter
Glue Hose
Glue Striker(Ability)

-Path 3-
Stickier Glue
Glue Soak
Permanent Glue
Bloon Stopper

-Path 4-
Corrosive Glue
Bloon Dissolver
Bloon Liquefier
Bloon Meltdown

Monkey Buccaneer
-Path 1-
Faster Shooting
Machine Gun
Destroyer
Aircraft Carrier

-Path 2-
Crow's Nest
Dreadnought
Cannon Ship
Monkey Pirates (Ability)

-Path 3-
Cutlass Monkeys
Grape Shot
Battle Trireme
The Flying Dutchmonkey

-Path 4-
Double Shot
Triple Shot
Battleship
Destroyer

Monkey Ace
-Path 1-
Rapid Fire
Sharper Darts
Neva-Miss Targeting
Spectre

-Path 2-
Pineapple Present
Glue Bombing
Operation: Dart Storm
Ground Zero (Ability)

-Path 3-
Front Gunners
Fire Darts
Fighter Jets
Call Wingmen

-Path 4-
Spy Plane
Anti-Metal Special Forces
Laser Plane
Alien Hovercraft

Super Monkey
-Path 1-
Laser Vision
Plasma Vision
Sun God
Temple of the Monkey God

-Path 2-
Hot Darts
Fireballs
Solar Blaster
Apoplectic Apocalypse (Ability) 

-Path 3-
Super Range
Epic Range
Super Shots
Titan Monkey

-Path 4-
X-Ray Vision
Robo Monkey
Technological Terror
Antimatter Terror

Monkey Apprentice
-Path 1-
Lightning Bolt
Seeking Thunder
Summon Whirlwind
Tempest Tornado

-Path 2-
Fireball
Blinding Burn
Dragon's Breath
Summon Phoenix(Ability)

-Path 3-
Intense Magic
Monkey Sense
Darkness Cloud
Void Walker

-Path 4-
Ground Pulse
Shockwave
Earthquake
Titan Quaker

Monkey Village
-Path 1-
Monkey Beacon
Jungle Drums
Monkey Fort
Tower of Supreme Boosting

-Path 2-
Radar Scanner
Monkey Intelligence Bureau
Technological Center of National Monkey Defense
T.C.N.M.D Call to Arms (Ability)

-Path 3-
Lookout Tower
Monkey Town
High Energy Beacon
Beacon of Rage

-Path 4-
Beacon of Blessing
Beacon of the Adept
Beacon of the Divine Monkey
Beacon of the Mage Magna

Banana Farm
-Path 1-
Improved Banana Farm
Banana Factory
Banana Research Facility
Banana Matter Generation Field

-Path 2-
More Bananas
Banana Plantation
Banana Republic
Banana Generator (Ability)

-Path 3-
Banana Savings Shack
Monkey Bank
Banana Investment Advisory
Banana Stocks & Shares, Inc.

-Path 4-
Long Life Bananas
Valuable Bananas
Insta-Sell Bananas
Healthy Bananas

Mortar Tower
-Path 1-
Bigger Blast
Bloon Buster
Piercing Shelling
The Big One

-Path 2-
Rapid Reload
Double Bomb
Knockback Shells
Mortar Battery (Ability)

-Path 3-
Increased Accuracy
Fine Shot Shells
Concentrated Laser Shells
Precision Tesla

-Path 4-
Burny Stuff
Napalm Shells
Signal Flare
Inferno Shells

Dartling Gun
-Path 1-
Focused Firing
Faster Barrel Spin
Laser Cannon
Ray of Doom

-Path 2-
Flaming Dart Launcher
Explosive Dart Launcher
Hydra Rocket Pods
Bloon Area Denial System (B.A.D.S.) (Ability)

-Path 3-
Powerful Darts
Depleted Bloontonium Darts
Diamond Sharpened Darts
Infinity Pierce Darts

-Path 4-
Double Dartling
Triple Gat
Quad Dart Frenzy
Bloon Devastator

Spike Factory
-Path 1-
Bigger Stacks
Spiked Ball Factory 
Spiked Mines
Plasma Mines

-Path 2-
Faster Production
Even Faster Production
Super Fast Production
Spike Storm (Ability)

-Path 3-
Glue-Coated Spikes
Piercing Spikes
Long Lasting Spikes 
MOAB-SHREDR Spikes

-Path 4-
White Hot Spikes
Explosive Spikes
Cluster O' Explosive Spikes
Cluster Rain

Heli Pilot
-Path 1-
Bigger Jets
Pursuit
Super Speedy Jets
Monkey Airbase

-Path 2-
Sonic Darts
Enhanced IFR Instruments
Downdraft
Support Chinook(Ability)

-Path 3-
Quad Darts
Missile Launcher
Laser Cannon
Blasternaut

-Path 4-
Back Guns
Razor Rotors
Storm Chopper
Apache Dartship

Monkey Engineer
-Path 1-
Sentry Gun
Fast Engineering
Better Sentries
Laser Blaster Sentries

-Path 2-
Nail Gun Mk. II
Larger Service Area
Sprockets
Overclock (Ability)

-Path 3-
9-Inch Nails
Flaming Hot Nails
Chemical Infused Nails
Antimatter Infused Nails

-Path 4-
Cleansing Foam
Acidic Foam
Bloon Trap
Engineer Mines

Bloonchipper
-Path 1-
Suckier
Heavy Duty Suction
Dual Layer Blades
Super Wide Funnel

-Path 2-
Double Barrel
Triple Barrel
Quad Barrel
Supa-Vac (Ability)

-Path 3-
Long Range Suck
Mega Range Suck
Suction Tornado
Void Vacuum 

-Path 4-
Faster Shred
Extremely Fast Shred
Stunning Shred
Sendback Shred

Monkey Sub
-Path 1-
Submerge and Support
Radar AI
Bloontonium Reactor
Unstable Reactor

-Path 2-
Twin Guns
Airburst Darts
Ballistic Missile
First Strike Capability (Ability)

-Path 3-
Barbed Darts
Advanced Intel
Dartling Guns
Torpedo Command

-Path 4-
Triple Cannon
Very Fast Firing
Undersea Destroyer
Marine Devil

Bloons
-Red
-Blue
-Green
-Yellow
-Orange (Faster than a yellow but slower than a pink, and splits into 2 yellows when popped.) 
-Purple (Faster than an orange but slower than a pink, and splits into 2 oranges when popped.)
-Pink (Splits into 2 purples when popped.)
-Black
-White
-Zebra
-SMART Bloon (Can change into another bloon type to dodge certain attacks, but cannot change back. Cannot change into blimps.) 
-Gray (Has the properties of zebras and leads combined. Spawns 2 Zebras and 2 Leads when popped.)
-Rainbow 
-Ceramic 
-Immune (Immune to glue and ice, and is as fast as a yellow bloon. Splits into 2 Ceramics on pop.)
-Concrete (Takes 3 times damage as ceramic, then splits into 2 ceramics)
-Titanium (Can only be damaged by explosives, then after 3 hits, splits into 2 grays.)
-Iron (Has the same properties as gray bloons except spawns into a ceramic
-Glass (Is not affected by lasers or anything sharp)
-MOAB (Massive Ordinary Air Blimp)
-BFB (Brutal Floating Behemoth)
-HAB (Hot Air Blimp)
-CARL (Colossal Airship of Rainbow Launching) 
-ZOMG (Zeppelin of Mighty Gargantuaness)

Bloon Types
Camoflage
Regenerating
Lead
Frozen
Helium
Distraction/Decoy
(and their bonus types)