G4 (also known as NickG4) is a American adult-oriented nighttime programming block of the basic cable network Nickelodeon that is programmed by its in-house production studio, Williams Street. Marketed as a separate network for ratings purposes, G4 broadcasts from 9 p.m. to 6 a.m. ET/PT.
The block launched on September 28, 2022, as the merger between two programming blocks which also targeted a teenage/adult audience: TeenNick and The N. G4 serves as the nighttime identity of Nickelodeon, and it was established as alternative programming during late night hours when Nickelodeon’s primary target audience would normally be sleeping. By 2025, G4 would be granted its own separate rating reports from Nickelodeon due to it targeting a different audience.
The block features stylistically varied animated and live-action shows, including original programming, syndicated series, anime, original video animations, short films with generally minimal or no editing for content, and content focusing on video games and gaming culture.
G4 has frequently aired adult animation features, mockumentaries, sketch comedy, and pilots. The block's shows are known for their sexual themes, frank sexual discussion, nudity, strong language, and graphic violence. Many of its programs are aesthetically experimental, transgressive, improvised, and surrealist in nature. Adult Swim has contracted with various studios known for their productions in absurd and shock comedy.
As with Nickelodeon, G4’s reach through various services totals 87 million American households as of November 2026.
History
Launch
G4 was launched on September 28, 2022. The initial concept was to create a service similar to rival Adult Swim but "geared more toward MTV's demographics" (teens/young adults). The block was launched with a nonstop Pong marathon for a whole week.