well I am not a game balancer ut I've beta tested a ton of games. After watching the video other than not really understanding what the bottles are used for or any other stuff..This s=looks really funny and interesting. I like the take on a skill game/Lane Defense. Also the level seems to drag on for only being level 11. But I don't have anything to go off of either having seen only that one level. Maybe have a way to power up your basketball like level up the damage or something. I saw you turned it into a bomb at one point which was pretty cool.
for this bottles (energy) you can use different skills, as bombs, air attack et c. ps if you want to be beta tester you can send me your email for the testflight build.