
Sling sleepy pebbles into the stack, merge them into grumpier ones and make three furious lava pebbles erupt.
A pile of sleepy river pebbles is about to have a very bad day. Pull back the slingshot, watch the dotted arc and let go: your pebble sails over the riverbank and drops into its column. Two equal pebbles merge into a bigger, grumpier one, from a snoozing 2 all the way to a furious 64 lava pebble, and every merge can set off the next for a growing chain bonus.
Lava pebbles are too cross to merge. Line up three of them in a row or a column and they throw a tantrum and erupt off the board. Plan ahead with the next pebble and the hold slot, earn hammers, bombs and rainbow geodes as you merge, and keep every column from overflowing. Play 36 goal levels with three stars each, or go endless while new pebbles keep washing up from the river.
Drag back and release to sling the pebble, or tap a column for a quick shot. Equal pebbles that touch merge into the next size. Three 64 lava pebbles in a line erupt. A pebble that lands on a full column without merging overflows and ends the run.