Worth, useless-bad-good-great-invest
Speed, sluggish-slow-medium-fast-hypersonic-light
Dart monkey
Level 6 upgrade: Double flaming shot; can pop any kind of bloon, goes two times further(pops twice more, 70 bloons) big range and very fast reload time. Cost: 4700 Worth: Great Speed: Fast
Tack shooter
Level 6 upgrade: Blue ring; also can pop any kind of bloon except it has a huge range, about the range of an arctic tower, and can pop 350 bloons at once. Cost: 7000 Worth: Invest Speed: Medium
Boomerang
Level 6 upgrade: Double handed lightsaber; acts like the previous upgrade, just two-handed and improved reload time. (Cheapest Level 6 upgrade) Cost: 3400 Worth: Good Speed: Medium
Bomb tower
Level 6 upgrade: 8-way mauler; launches M.O.A.B. missiles in 8 direction, but slow to reload. Cost: 5700 Worth: Invest Speed: Slow
Ice tower
Level 6 upgrade: Antarctic Wind; Blows wind into every direction to pop 2 layers and freeze them. (Will make the game lag) Cost: 14000 Worth: Great Speed: Medium
Mortar tower
Level 6 upgrade: Extreme mortar; Strips 3 layer of bloons at a time. Improved reload time. Cost: 5000 Worth: Great Speed: Hypersonic
Glue gunner
Level 6 upgrade: Toxic glue; pops bloons when even touched! The glue also everlasts. Cost: 4800 Worth: Good Speed: Fast
Monkey beacon
Level 6 upgrade: Instant storm; monkey storm doesn't have a reload time now. Cost: 20000 Worth: Invest Speed: n/a
Monkey ace
Level 6 upgrade: Bomb storm; Monkey ace throws 32 light-speed unaimed fragment bombs instead of darts! Cost: 14000 Worth: Great Speed: Fast-Hypersonic
Monkey buccaneer
Level 6 upgrade: Dreadnaught; Just acts like the Dreadnaught premium upgrade except it can pop bomb immune bloons, deals 20x damage to blimps and 2x the speed of battleships! Cost: 9500 Worth: Invest Speed: Hypersonic
Monkey apprentice
Level 6 upgrade: Monkey bloonatician; Summons blue lightnings everywhere on screen popping 2 layers of bloons instantly. Deals 100 damage to blimps. Cost: 34000 Worth: Invest Speed: Fast
Super monkey
Level 6 upgrade: Blooniverse God; Shoots out a huge blue ball of flame that can pop 900 bloons at once and destroys any M.O.A.B.s or B.F.B.s on impact. Cost: 400000 Worth: I can't tell you how precious, Invest++++++++++ Speed: Light
Banana Farm
Level 6 upgrade: Healthy bananas; Gives you 50 lives and 5000 money EVERY ROUND! Cost: 78000 Worth: Invest+ Speed: n/a