Everybody received positive reviews from music critics—Jakob Dorof of Tiny Mix Tapes praised the album for showcasing the experimental and versatile nature of Shinee's music, and Billboard's Jeff Benjamin positively viewed the group's attempt at EDM, stating the group found the balance of hyperactive EDM and pop stylings.

The recent Pink Tape album by f(x)—a group engineered by SM Entertainment to be the female derivative of Shinee, one of their most successful boy bands—marked a big step forward, and now f(x)'s brother-progenitors have taken things even further.

A seven-song mini-album (Korea's format of choice), Everybody makes for a leaner listen than the full-length Pink Tape and by some criteria may rank less impressive.

Dorof remarked that "Close the Door" highlights the experimental and versatile nature of Shinee's music which frequently charts into unfamiliar territories.

[23] Jeff Benjamin of Billboard praised the title track, "Everybody", stating, "Shinee crams in loads of dubstep alongside bleeps, bloops, build-ups and breakdowns.

The electronic overload is topped off with sweet boy band harmonies, resulting in an easy-to-digest electro-pop track".