Grand Theft Auto: Alien City is an extensive modification for Windows that transforms the classic gameplay of the original Grand Theft Auto series. This mod introduces a plethora of new features, including over 60 missions and race tracks, enhancing the action-packed experience that fans expect. The mod replaces nearly all pedestrian and vehicle models, offering a fresh visual perspective on the familiar urban landscape.

Characterized as a 'trash frenzy,' this modification brings a unique twist to the gameplay. Players will encounter bizarre pedestrian behavior, new animations, and unexpected elements such as maniacs with shotguns roaming the streets. Additionally, players can engage in quirky activities like playing basketball from a car or strumming a guitar, creating a whimsical and chaotic atmosphere that sets it apart from traditional gameplay.