Do not get Death Ray Vision because it only shoots 1 laser, while Triple Twin shoots 6.
Only get Super Plasma when you have enough money to ungrade to Twin Super. This is because Super Plasma only pops twice as fast as regular plasma and by upgrading to Super Plasma you lose half of the popping power.
Eviltom's strategy for upgrading:
Boomer > Plasma Tentacle > Faster Darts > Double Plasma > Triple Plasma > Double Boomer> Quad Plasma >Double Darts > Quad Darts > Heavy Missile > Twin Missiles > Extra Speed > Smart Missile > Quad Missile > Laser Vision > Twin Darts and Laser Vision> Triple Twin Lasers > DEATH RAY VISION > Super Plasma > Twin Super > Triple Super > Quad Super > MOAB Maulers > Quad MOAB
Webtv4's strategy for upgrading:
Path 2, path 3, path 1.
Boomer > Faster Darts > Twin Darts > Double Ranga > Quad Darts > Heavy Missle > Double Missles > Quad Missles > Smart Missles > Quad Smart > Laser Vision > Twin darts with Laser Vision > Triple Twin Lasers > don't upgrade anymore, and save the blops for points. Seriously! Triple Twin is better than Death Ray!
boomer>fast darts>2x boomer>missle>2x missle>2x darts>4x darts>extra speed>laser>laser twin darts>laser twin>death ray. the rest is random
Boomer > Fast Darts > Double Boomer > Plasma > Heavy Missle > Twin Darts > Twin Missles > Double Plasma > Quad Darts > Extra Speed > Smart Missles > Triple Plasma > Quad Missles > MOAB Maulers > Laser Vision > Darts and Laser Vision > Quad Plasma > Triple Twin > Sun Plasma > Death Ray
You don't need to upgrade after that. Yes, I beat it with that.
P.S. Try to keep the ratio of Path 1 Upgrades + Path 2 Upgrades : Path 3 Upgrades to about 3:1.
Iyreguy's stratergy for upgrading:
Boomer > Faster Darts > Plasma Tentacle > Double Plasma > Double Boomer > Double Darts > Heavy Missile > Triple Plasma > Quad Plasma > Twin Missiles > Quad Darts > Smart Missiles > Extra Speed > Super Plasma > Laser Vision > Twin Super > Twin Darts > Quad Missile > MOAB Maulers > Triple Super > Triple Twin > Quad MOAB > Death Ray Vision > Quad Super
Try to think of path 3 as the last resort. It's path is not as great as the other paths, and each tentacle can only pop 1 bloon at a time, and regardless of the speed it can do it in, the only 2 upgrades in that path that are at least partly useful are Quad Plasma/Super because they each have 4 tentacles, but not even Quad super will be able to beat Quad Missiles or even Laser Vision if you use it right. Path 2 should be the 1st upgrade path completely finished.
Bloons fan 55
Bloons fan 55's strategy for buying upgrades(it works every time):
Fast darts-Boomer-Plasma tentacle-Double darts-Double boomer-Double plasma-Heavy missile-Quad darts-Triple plasma-Extra quad dart speed-Twin missiles-Quad plasma-Laser vision-Laser vision plus double darts-Triple twin lasers-Smart missiles-Death ray vision-Quad missiles-MOAB maulers-Quad MOAB mauler-Super plasma-Twin super-Triple Super-Quad super(dont buy it if you want the blop bonus in the high score).
Make sure to also get special upgrades like Super bomb, Freeze out and Sun God.
Bonjoura Economics Strategy
This strategy is a must-have if you want highscores.
Try to get AS MUCH BLOPS as possible even when you're fully maxed - They increase your highscore at the end.
MOABS and the BFB should be as focused as possible with Triple Twin Lasers, so the three shots hit.
The reason we don't get Death Ray Vision is because Triple Twin Lasers shoots 3 projectiles at high speed, while the Death Ray is 1 big proectile with high speed. Hitting 3 times is better than 1.
You can NOT get missiles until Stage 5 : they save you a BIG load of blops.
Super Plasma is not worth it, as you will go from 4 plasma to ONE somewhat better plasma, plus it spends blops.
Plasma is really worth buying only for the early rounds, and even then you can save blops (around 6000) not buying all the tentacles. It should be really used as a last resort.
Well.. here we go !
Get Faster Darts at the first clump of blues.
Save up for Double Darts here. If you're good, you can get it at the end of the round.
Save up for Quad Darts.
Quad Darts as soon as possible. You've got just engouh power to make golds at that point.
3-way Plasma at the start.This is a good level to get blops, so go to pop much ! You will own the level with Quad Darts. You're done with Path 3 here. If you did it well, you should have enough to buy Extra Speed, otherwise buy it on the next level.
This can be an hard-to gold level : stay on the center of the arrows. Notice the smiley face at the end :)
The last part will require you memory to gold. Here, get Laser Vision ASAP.
This level NEEDS Laser Vision to gold, good thing we've got it in advance. Get Twin Darts here. This will be VERY HARD to pass without the missiles so get some missiles upgrades here, but not MOAB maulers.
The only thing you're going to buy in here is Triple Twin. Do NOT get Death Ray. You may also want to get the first-second missile upgrades, for gold sake.
As soon as you enter it, buy ALL THE MISSILE upgrades, but do not buy Moab Maulers. They save you some blops.
Boring and easy level, just gold it.
Stay focused on destroying the rainbows that fall from the sky, they give more pops and blops. Do ALWAYS try to target normal bloons rather than ceramics.
Your aiming should be this :
Normal bloons first - Ceramics second - The BFB 3rd
Get as close to the BFB as possible for dealing more damage. Remember to damage normal bloons when they come.
Enjoy your highscore !
300000 score strategy
Boomer > Faster Darts > Plasma Tentacle > Double Boomer > Double Plasma > Twin Darts > Quad Darts > Heavy Missile > Twin Missile > Smart Missiles > Extra Speed > Quad Missile > Laser Vision > 3 Way Plasma > Quad Plasma > Twin Darts > Triple Twin
If you are good at playing, you can even get into 300000 score!