1 question : how does mike get money from hitting a vending machine? i mean.. there are no coins to be seen the vending machine spits out.. and, to prove it, using fire lvl 3 should melt the money.... so.. how does he get money from hitting it?
you know, for me the best farming method is 3-1, but i recommend this for getting high-costed upgrades, and you also need at least a powerful arm upgrade (as powerful or near powerful as the spikey shots)
how to get 1000 blop cash in 2½ minutes : go to stage 3-5, pop bloons until you pop the 4 red squids and then repeat [note that you also need to pop the circles and the stingrays a the beginning]
there should be at least a daily blop cash that when logged in, you get 50 blops, logging in 2x a day = 200 blop, 3x = 500, 4x = 2000, 5x = 5000. + this so the dev might see it!
really the solid doom, i spent all the time trying to grind for it, but all i got is just a fast-firing doom burst. (probably they didnt make it a SOLID because its too powerful combined with Precision Flight)