Rook is currently available to be played online in one main place. Here at rook game, we do not actually participate in this online community for one main reason. This online rook game does not play the style of rook we like. The main difference is they play with rook being the highest trump. Also, they play without 1s, 2s, and 3s making for a very different game.
Rook online has gone through some different phases in their lifetime. For a while they were a pay to play gaming community, but lost so many participants that they had to switch back to playing for free. I am not sure of how they make money or stay alive, but for those that are just looking for some quick games of rook online, then they are worth checking out.
For us, we are all about playing cards in person. There is nothing better than getting together with a group of friends and just laughing and playing, even if the games get competitive. If you are looking for some rook players in you area, I suggest making a request to your facebook friends. You never know which one of your friends are looking for players to play with as well.