is an Australian free-to-air digital television multichannel, which was launched by the Nine Network on 9 August 2009, replacing Nine Guide.

[2][3] It is a youthful channel that offers a mix of comedy, reality, general entertainment, movies, animation and drama aimed at people between the ages of 2 and 18.

was revealed on 23 March 2009, with the Nine Network announcing their intention to start a standard-definition variety-based multichannel, launched midway through 2009.

The channel's name and branding was first revealed as GO!99 on 14 April 2009 by TV Tonight, a blog dedicated to Australian television.

officially began broadcasting scheduled programming from 9 August 2009 at 6:30 pm with a 1-minute promo featuring the song "Go!"

by Sydney based sound house group Noise International featuring vocals by Sharon Muscat.

In response, Nine established a helpline for viewers experiencing problems or requiring assistance to tune in to the new channel.

[7] A music video was also produced (notable for the usage of neon dancers), which was regularly shown as a filler on the channel.

Presented by young journalists in the Nine newsroom,[13] these would usually feature a few breaking news stories and the weather.

aired a promo promoting new shows using the song All Eyes on Me by Sammy Small, licensed from Extreme Music.

[19] This presentation remained unchanged for the next few years, with Noise International's theme music reinstated.

Rumours of a on-air presentation relaunch appeared after the channel's program lineups were redesigned in September 2013.

[23] On 2 February 2014, the channel received a new logo and the on-air presentation graphics were updated by creative company DD8.

In March 2021, Nine announced that WIN Television would be returning as the primary Nine regional affiliate from 1 July 2021.

[34][35] The HD feed launched in Darwin and northern NSW at the same time as metropolitan areas and a SD simulcast is still available on channel 93.

suggested it would consist of a mix of entertainment and lifestyle programming (this rule wasn't featured until the launch of future Female-oriented HD channel 9Gem in 2010).

's programming is generally structured under nightly themed blocks,[39] which consists of comedy on Sunday, all new reality shows on Tuesday, sci-fi on Wednesday,[citation needed] female-skewed drama on Thursday (until the launch of 9Gem, when it was replaced by movies instead), and movies on Friday.

On 16 August 2017 it was announced that WWE programming including Monday Night Raw and SmackDown Live would air every week on the channel in a reduced one hour format.

is available in standard definition in metropolitan areas through Nine Network owned-and-operated stations: TCN Sydney, GTV Melbourne, QTQ Brisbane, NWS Adelaide, STW Perth and NTD Darwin, as well as NBN Northern New South Wales and other stations WIN Southern NSW/ACT, GTS/BKN Broken Hill NSW, AMN Griffith NSW, VTV Regional VIC, STV Mildura, RTQ Regional QLD, TVT Tasmania, GTS/BKN Spencer Gulf SA, SES/RTS Eastern SA, WOW Regional WA and Remote Central & Eastern.