MahJongg and Shisen  are similar in that they match tiles to eliminate them.  This can be a competitive game with another, or simply a way to pass time.

Satisfy your inner child the MahJongg Toy Chest.  Great sound effects!

Shockwave has an addictive MahJongg version.

UJ Software has a fee download of an excellent Shisen game.  Note that you must select your download, for Windows, or for other operating system platforms including Mac.