Sometimes a good aim is not enough to hit all the balloons you want in the screen, then you will need to put your pride aside and accept that there's a need of something else to help you. Bouncers will be positioned in strategical places, where they will change the direction of your darts and send them directly to the balloon you want to pop, as long as you aim correctly. Nobody said it would be easy and you need to pay even more attention, since the bouncers aren't as easy to hit as a big quantity of balloons. However, hitting them and then getting some special bonus is all you need to make all of them pop out of your level. Nothing comes free, since you will have this little help from the game, it will ask in exchange for you to blow up all or almost every single balloon.