Destroy as many candies as you can without losing your jelly. Tap on the screen at the right time to launch the jelly directly to the candy. Collect coins and purchase buyouts or skins.
What will happen, if you launch a jelly towards a candy? Definitely, one of them won't survive, but assuming the fact, that you are playing for jelly, you should make sure it will survive. Launch the jelly towards the cluster of candies and smash them. Avoid hitting the spiky wall by making the accurate shot. Collect coins and make purchases for them!