Which .//Hack came 1st?

I think it is First,
Dot hack Sign
Dot hack GIFT ( Ova )
Dot hack Root
Dot Hack G.U ( Movie )
Dot Hack G.U. Returner (OVA)
Dot hack Tasogare no Udewa Densetsu
Dot Hack Liminality (OVA)

Its not a continues another season of the anime. Each anime has different characters like Dot hack Sign, and then couple years later Dot hack roots, then Dot ahck Tasogare No - yea. :P And the Dot hack Liminality is completely different i think. Anyways have fun! ((: I LOVE DOT HACK! Espeically my most favorite is Dot hack sign, because its way sad, and then dot hack tasogare no Udewa Densetsu. its so cool XD you can watch it here if you want.. anyways have fun!<3

http://www.animeseason.com/anime-list/

.hack//sign
.hack//liminality (expect to be confused if you haven't played the games)
.hack//legend of the twilight bracelet
2 .hack episodes that tie in all of the sign, liminality, and twilight bracelet character together.
.hack//roots.

.hack//SIGN (2002).