Die in the game, and you die in real life. The only way out is clearing the massive floating castle Aincrad. The pinnacle of heroic sagas kicks off here!
Source: Yen Press
5 Volumes (Ongoing)

It's no secret that the original web novel of Sword Art Online was an RNG succession of events by Reki Kawahara that ended published and adapted by pure luck. Progressive became the example of what Aincrad was supposed to be from the start and it was pretty good, but Progressive was Progressive, saying it was the "new" Aincrad would be a mistake that became clear as the story went on.
That's when Re:Aincrad came in, the perfect opportunity to use what was done in Progressive as the foundation to fix the AWFULL pacing that was never meant to be a professional work and the first few chapters gave that feeling, let's see the properly structured story and character development that many believed SAO could have...
Well, this manga is not it. The first few chapters were pretty much clickbait.
By the fist few pages of chapter 3 we already see everything that we hadn't seen before and by the end of vol 2 we say goodbye to what we had seen in Progressive.
This is literally the second try at Aincrad's comic adaptation from 2010, this time using the fame of the IP to get a better artist and cling to an already stablished fanbase.
This world haves 9 volumes of light novel content in Progressive and probably around the same in content if Integral Factor were to be adapted. Are they REALLY not going to use any of that and just copy/paste the anime?