In Latin America, DNCE, Bebe Rexha, and Nick Jonas were the supporting acts, and in Oceania, Lipa and DJ Leggo My Fueggo opened shows.

In 2018, Mars announced another tour leg in North America; it was initially to feature Cardi B but she wanted to raise her newborn child and was replaced with Boyz II Men, Ciara, Ella Mai and Charlie Wilson.

Apart from 24K Magic, the tour setlist included songs from Mars's previous albums Doo-Wops & Hooligans (2010) and Unorthodox Jukebox (2012), as well as the Mark Ronson-Mars collaboration "Uptown Funk" (2014), which was often used for the encores alongside "Locked Out of Heaven".

The 24K Magic World Tour received generally positive reviews from music critics, who praised Mars's showmanship and his guitar solos, as well as the stage production.

[8] The tour's South American leg was sponsored by Banco do Brasil and Budweiser, and Hospital Sancta Maggiore was the official supplier.

[3] Pepsi was the official soft-drink partner during the Asian leg of the tour, which visited China, Thailand, the Philippines, Singapore and Malaysia.

[9] According to Front of House (FOH) engineer Chris Rabold, Mars had a say in every aspect of the tour's shows, which he envisioned as a huge party.

[18][19] Initially, all concerts in Oceania were scheduled to be opened by Lipa but she canceled four dates due to dental problems and was replaced by DJ Leggo My Fueggo.

Charlie Wilson, Ciara, Boyz II Men and other high-profile acts appeared on select occasions,[22][23][24] replacing Cardi B, who wanted to raise her newborn baby, on the North American leg.

[26][28] During the performance of the follow-up song "24K Magic", which led to the audience cheering and dancing, the tower panels changed colors and were complemented by fireworks.

[29][31][30] On the subsequent "Runaway Baby", Mars and his band performed "pelvic" dance moves that critics compared to Elvis Presley; there followed a breakdown similar to James Brown's work.

For the encore, they returned to perform "Locked Out of Heaven", during which golden confetti was poured on the audience,[30][29] and the closing song "Uptown Funk", during which fireworks and smoke prompted men dressed as firefighters to use fire extinguishers to put them out.

[41] Selected shows of the tour received generally positive reviews from critics, who commended Mars's showmanship, his guitar skills and the stage production.

[31] Jesse Sendejas Jr., writing for the Houston Press, said Mars and his band "came to entertain and did that astonishingly well" in a show which, according to her, attracted a wide-ranging audience of all age groups and cultures.

[33] The Pittsburgh Post-Gazette's Scott Mervis lauded Mars's "silky voice" and his Michael Jackson-esque dance skills, "to which he adds a comic touch".

[30] Tammy Kwan of The Georgia Straight called Mars's and The Hoolligans's performance "stellar", noting its "synchronized dancing and dazzling stage effects".

[29] The Music's Madelyn Tait praised the concert, writing; "Mars was able to leave a diverse, all-ages crowd [that was] satisfied with his funk and soul-infused pop and proved how capable he is of putting on a fun, entertaining arena show".

[34] Leticia Madrigal of The Clovis Roundup lauded Mars "do[ing] more than enough entertaining through his choreographed performance with his band and with his unmissable radio hits".

[35] In a mixed review, Luís Guerra from Blitz lauded one of the shows for its variety of genres but said Mars performed romantic songs inadequately.

[44] According to an October 2017 Billboard article, the tour had sold 659,190 tickets at 42 concerts in 32 cities in North America and earned $76 million in revenue there.

[57] In 2018, Mars sold out the three shows at the Aloha Stadium in Hawaii, breaking the attendance records of both U2 and Michael Jackson, who performed two nights for 50,000 people.

These included "Too Good to Say Goodbye",[16][38] "Gorilla", a mashup of "Nothin' On You" with "It Will Rain",[33][37] "Talking to the Moon",[40] "Billionaire",[39] and "Thinking Out Loud" performed with Ed Sheeran.