You will be given a reel of gems to match with gems on the board above that slot reel. Reach the Star and Level Goals before you run out of spins to win the level and proceed.
Tap on a level to open it and see the Level Goals. Begin play by pressing the Spin Button to fill the bottom reels with gems.
Select a square on the column above a gem to place it in that square. That gem must match at least 2 other gems of the same color. Matches are not limited in shape or size outside of needing 3 or more same colored gems.
Matching all the gems on the bottom reel will award a Free Spin and increase your Score Multiplier by one. This will also spin the bottom reel for more gems to match.
Complete the Level Goals before your spins run out to win the level and progress through the lands of Cascade!