-The Terminal disc, which is a collection of video reports (maybe 3+ hours?) by Jun Bansyoya creator of Project GU, in which he details what he's learned from his investigations on the incident that took place in 2010 [the original .hack series] and how he applied this knowledge and how it drove him to creat Project GU. [Note, this is a fictional person and this is a stylish way at recapping the original games while providing intrigue towards the new plot].
As with GU Vol.1 itself, I haven't had time to do more than just grace the beginning, but the story seems really, really interesting. Despite the original .hack being very repetitive and having bad graphics, the story was awesome (though the pacing was not so much) and GU looks to be just as mysterious, cool, stylish, and should have people cracking theories right from the start. The plot is heavily tied into the first game series but then I guess that's why they give you a disc completely dedicated to recapping that game Game also is the direct sequel to the newest .hack anime and I think the first hour of the game spoils the ending to that series (need to watch it to get more background on the game now ^^.
Only barely touched the gameplay/battle engine but between E3 and the early explaination of the systems...I don't really like it much :\ I strongly prefer the original series's battle engine/dungeons GU seems slower and crappy action-rpgy. Dunno though, hopefully it gets better.
Graphics are ok, cutscenes are great, music is on par or maybe better than the original series (so it's darn good), lots of voices and they rock, anime cutscenes for the news!
Yeah, extremely extremely early thoughts are: I doubt it's a good game in terms of gameplay, but I'll be giving it X amount of hours for all 3 volumes because I gotta see this story play out to the end. Hopefully the actual game part turns out alright, but if not oh well, it's probably better movie than the actual .hack animes and most plot-heavy videogames