In the United States, the album debuted at number 4 on the Billboard 200 with 109,000 copies sold in its first week.[1] It also made it to No. 33 in France, No. 50 in Switzerland, No. 68 on the UK Albums Chart, and No. 95 in Germany.
The album was supported with two singles: "Got It Twisted" and "Real Gangstaz". Its lead single, "Got It Twisted", reached No. 64 on the Billboard Hot 100 and No. 23 on the Hot R&B/Hip-Hop Songs in the United States. The second single off of the album, "Real Gangstaz", only peaked at No. 49 on the US Hot R&B/Hip-Hop Songs. Accompanying music videos for both singles were directed by Benny Boom.
Amerikaz Nightmare was met with generally favourable reviews from music critics. At Metacritic, which assigns a normalized rating out of 100 to reviews from mainstream publications, the album received an average score of 63, based on eight reviews.[2]
Steve 'Flash' Juon of RapReviews praised the album, writing "there are songs on here so thorough and ill they'll send a chill down your spine and raise the hair on your neck".[7]AllMusic's David Jeffries resumed: "they've sounded stuck and overconfident before, but this old-school-styled, true hip-hop album finds the Mobb hungry again".[4]HipHopDX contributor found "just like every Mobb Deep release after Murda Muzik, Amerikaz Nightmare is highly inconsistent".[5] Nick Flanagan of Now admitted "Havoc's production stays strong while his verbal skills remain at the fore, and Prodigy returns to his earlier rhyme style after a short period of sluggish verses".[6]Spin reviewer gave a mixed feedback, stating "big-name cameos... can't disguise the fact that this is one more rote chapter in the infamous Queensbridge duo's twilight".[8]
Track 2 contains a sample from "Here I Go Again" written by Willie Mitchell, Earl Randle and James Shaw as performed by Jean Plum.
Tracks 5 and 16 contain samples from "She Blinded Me with Science" written by Jonathan Kerr and Thomas Robertson as performed by Thomas Dolby and "Saturday Night Style" written by Michael Campbell as performed by Mikey Dread.