Drop tiles, mix and match their colors; create conversion chains!

Drop tiles into a board trying to clear tiles of the same color by placing them next to each other.

To clear white tiles, first convert them into colored ones; grey tiles need first to be converted into white ones.

White tile between tiles of the same color gets this color; while tile between two primary colors gets a mix of the primary colors.

Clearing of a tile triggers conversion of white and grey tiles next to it.

Each new level starts with a row of gray tiles pushing up from the bottom.

You win if you reach a level with zero tiles to drop.