Grand Theft Auto IV is a 2008 action-adventure game developed by Rockstar North and published by Rockstar Games. It is the sixth main entry in the Grand Theft Auto series, following 2004's Grand Theft Auto: San Andreas, and the eleventh instalment overall. Set in the fictional Liberty City, based on New York City, the single-player story follows Eastern European war veteran Niko Bellic and his attempts to escape his past while under pressure from high-profile criminals. The open world design lets players freely roam Liberty City, consisting of three main islands, and the neighbouring state of Alderney, which is based on New Jersey.

Rockstar Games UK Limited is a British video game development company and a studio of Rockstar Games based in Edinburgh. The company was founded as DMA Design in Dundee in 1987 by David Jones, soon hiring former classmates Mike Dailly, Russell Kay, and Steve Hammond. During its early years, DMA Design was backed by its publisher Psygnosis, primarily focusing on Amiga, Atari ST and Commodore 64 games. During this time, they created successful shooters such as Menace and Blood Money, but soon turned to platform games after the release of Lemmings in 1991, which was an international success and led to several sequels and spin-offs. After developing Unirally for Nintendo, DMA Design was set to become one of their main second-party developers, but this partnership ended after Nintendo's disapproval of Body Harvest.