This is a game of solitaire. The rules are simple. You match similar pieces and,every time you do,you eliminate those pieces. That's all there is to it. If the red line vanishes after you click on the two pieces,you win the game.
Help can be used,so learning how to use it is a good idea.
In this game,you control the falling tiles and pile them up as you go. If you fill a horizontal line,that line is eliminated. The more lines you eliminate in one move increases your score. Also,as lines are eliminated,tiles fall faster and faster. If you can't control how the tiles fall and they pile up to the top of the field,the game is over.