You must attempt to rearrange shapes or objects in a playing field in order to get three or more identical objects connected (sometimes in a row, otherwise just sharing a side), at which point they disappear and grant the player points.
This rearrangement is done by exchanging the places of two tiles at a time, and, in recent variations, swap of two objects must result in a connection of three or more identical objects, or else the swap reverts itself.
You have TWO GAME MODES one normal and the other ARCADE game were you can play definitely without stop.