An accompanying music video was shot by Kazuaki Seki; it features the girls performing the song in a black room.

"Computer City" was written, composed, arranged, and produced by Japanese musician and Capsule member Yasutaka Nakata.

Alongside the album's remaining material, "Computer City" has partial rights by Nakata through Yahama Music Communications.

[4] Ian Martin from AllMusic stated that the song, alongside their back catalogue from Tokuma Japan Communications, "adopt[ed] a vocoder-heavy production style strongly influenced by European electro and house".

A writer from CD Journal complimented the "tight" composition, and praised the production and songwriting by Yasutaka Nakata.

[8] Channel-Ai staff editors awarded the song five stars out of five, stating "'Computer City' is a great improvement; it starts off with vocals only before it dives into a heavy beat.

"[9] In Japan, "Computer City" debuted at number 45 on the Oricon Singles Chart; it sold 1,853 units within its first week of sales.

[13] An accompanying music video was shot by Kazuaki Seki; it features the girls performing the song in a black room.

There are several intercut scenes of computer generated imagery (CGI), which include the overlapping of digital circuits and other patterns.