For me it´s canon! I usually don´t play MODs. Mostly, because they are cheesy or lore breaking. This is not the case. Everything is perfectly detailed. PROs: 1) Brand new coherent lore and story (perfectly canon like New Vegas) 2) Voice acting, music and radios. Brilliant! 3) Beautiful and detailed city and maps. 4) New enemies and plenty of monsters to fight. 5) A lot of guns like New Vegas. 6) A lot of factions and companions like New Vegas 7) Humor, Surprises and Eastern Eggs. 8) IT´S HUGE! IT´S FREE! CONs: 1) Only the crashes. You have to save a lot!