Does anyone know in which order the ".hack//" anime series go?

Question

I am watching .hack//sign right know, and I don't know what series is supposed to come next. Could someone list them in order?
.hack//Sign .hack//Roots .hack//Liminality and .hack//Legend of the Twilight Bracelet

Answer 1

.hack//sign - first one

.hack//liminality - follows the video game, so you can watch it any time you want. Ending will leave you confused since you had to play the ps2 games to understand what happens.

.hack//twilight bracelet - second season. I recommend you to watch it after liminality.

.hack//sign extra episodes - a big episode where characters from the first, game, and second season meet.

.hack//roots is the latest series. Follows the newest game and the main character is Haseo.