Pro Addition of special blocks
In order to make the game more interesting for multiplayer there is an additional feature over regular Tetris where users can use special blocks against their opponents. Switch field, nuke field and add lines are just a few of the ways you can use these blocks to disrupt those you are playing against.
Con Pretty simple looking
The game, while simple in design could use better graphics to make it a little more appealing, while it does not really detract from the core gameplay it would be nice if there was more polish to the design. Luckily there are themes available online to help in this area, but of course it is up to the player to install these.