[4][5] On March 3, 2014, singer Merril Garbus posted a two-and-a-half-minute megamix of tracks from the album on her website, thanking fans for "your support and patience while we cooked this chicken.

[15] The single, "Water Fountain" featured as soundtrack in the EA Sports game, FIFA 15, along with the eight season finale of Shameless At Metacritic, which assigns a normalized rating out of 100 to reviews from music critics, Nikki Nack received an average score of 83, which indicates "universal acclaim", based on 34 reviews.

[17] Cian Taylor of NME described the album as pairing "non-western musical traditions with melodies fit for a playground" while combining "layers of fizzing electronics and rapid-fire wordplay" and stated that at its best, it is "easily Tune-Yards' finest work.

"[23] Barry Walters of Spin stated that "Nikki Nack betters Whokill by beefing up its feral ferocity with more sophisticated chops" and, in particular, complimented the power of "Garbus's magnificent yelp.

"[27] At Alternative Press, Jeff Rosenstock remarked on how "Nikki Nack pinballs between tidy arrangements and full-blown maximalism to find catchy melodies and dance beats in the strangest places.