The Crazy Frog also spawned many singles, a range of merchandise and toys, as well as two video games before going on hiatus in 2009. Crazy Frog Racer (featuring the Annoying Thing) was released in December 2005 on PlayStation 2, Gameboy Advance and PC as a racing game. If I had known that this was going to be such a big thing I would not have allowed them to use that stupid name.

In February 2005, viewers submitted a number of complaints to the United Kingdom's Advertising Standards Authority (ASA) regarding Jamster's advertising campaign, complaining that Crazy Frog appeared to have a visible penis and scrotum. On 22 April 2020, an official Twitter account for the character was created, and later that day it was announced that a new album was in development. As the authority had already adjudicated on the matter and confirmed the matter was not within its remit, the unusual step was taken of adding a notice to the ASA's online and telephone complaints system informing viewers that Jamster!

In 2005, the German production company The League of Good People was in talks with broadcasters about a TV series based on Crazy Frog.

In 2007, the Animation World Network wrote in connection with The Annoying Thing that there was a "planned feature film" to "be completed by the end of next year" into an animated feature film. Eventually, word reached Malmedahl that his impressions had been used in a now well-known animation studio. In late 2003, another Swede, Erik Wernquist, encountered the sound effect and, not knowing about the previous incarnations of the sound, was inspired to create the 3D animated character he named "The Annoying Thing" to accompany it. This led to many members of the population finding the Crazy Frog, as its original name suggests, immensely irritating. On 21 September 2005, the ASA ruled that the Crazy Frog, along with other Jamba ringtone advertisements, could not be shown before 9pm.

This was met with backlash on Twitter, with the account managers stating they had been receiving death threats over the matter.

Viewers felt that it was not made sufficiently clear that they were subscribing to a service, rather than paying a one-time fee for their ringtone. got wind of this, realizing the monetary possibilities through capitalizing on the underground cult-status, they licensed the rights to the creation, renaming it "Crazy Frog" and starting to market it in mid-2004. Wernquist worked on the first animation in his spare time using the LightWave 3D modeling application, and the whole process took between six and eight weeks.The Crazy Frog toured Australia in late 2005, beginning in Perth on 4 December and continuing through other major capital cities. On 1 July 2005, UK-based publishers Digital Jesters announced that they had acquired the rights to the video game licence for the Crazy Frog. of the population saw the Crazy Frog adverts an average of 26 times, 15% of the adverts appeared twice during the same advertising break and 66% were in consecutive ad breaks.

The ASA did not uphold the complaints, pointing out that the advert was already classified as inappropriate for airing during children's television programmes as it contained a premium rate telephone number, and that it was the broadcasters' decision how often an advertisement should be shown. The Crazy Frog was broadcast for the first time on Belgian television in mid-2004, though it was named the Annoying Thing.

In November 2021, the Crazy Frog Twitter account made light of the controversy, saying, "A lot of people were shocked to see my PP in 2005.