Directions: use the mouse to drop blocks. Match multiple blocks of the same colour to "lock" them. Use the special matching lock block to clear them. You can use the undo button to undo the last move.
As you progress the number of colours will increase, and eventually the number of matches required. Initially only two blocks need to be touching to lock them.
Click anywhere within the applet to start.
Note: you will need Java to play the game. Get it here!
Please post any feedback to the following article on my blog. If enough people enjoy it I will polish it, add some new features, tune the gameplay, etc.
Have fun! :)