It would be great if there were upgrades for bases and resources like if you had 1 dart monkey hall = 1 dart monkey but if you upgrade it you get 2 dart monkeys its the same with resources if you had a windmill and upgrade it more energy will come. Hope this is useful.
 "Bloons Monkey City"){kind=icon}
 "Woodclicker"){kind=icon}
 "GrindCraft"){kind=icon}
 "Bush Whacker 2"){kind=icon}
Thanks, man :)