mess around
btw, i think the best way to improve this is to have the ball already there, and just press the options you wnat, instead of putting the ball over the options
i personnaly believe that it is a fun defense game, but later on in hte levels, around round 20 or so, you get enough money that you just build tons of the 500$ towers, upgrade them completelsy, have for of hte ones that freeze the enemies, set it to keep going thorugh all the waves for you, ad then go do something else