good but hard
then game is good, changing creatures, different cannons...all good
BUT its way too hard, and all the monsters are from the same element so some connons are useless. and creatures keep getting stronger but give the same amount of money so you cant keep up and eventualy...lose.
and you can only use the first cannon, coz once you try saving to buy a better 1 , you waste alot of money and they kinda suck when they are unupgraded so you lose even faster.